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Cover Page - USD ($) $ in Millions	12 Months Ended
Cover Page - USD ($) $ in Millions	Dec. 31, 2019	Feb. 25, 2020	Jun. 28, 2019
Cover page.
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2019
Document Transition Report	false
Entity File Number	001-38487
Entity Registrant Name	Origin Bancorp, Inc.
Entity Incorporation, State or Country Code	LA
Entity Tax Identification Number	72-1192928
Entity Address, Address Line One	500 South Service Road East
Entity Address, City or Town	Ruston
Entity Address, State or Province	LA
Entity Address, Postal Zip Code	71270
City Area Code	318
Local Phone Number	255-2222
Title of 12(b) Security	Common Stock, par value $5.00 per share
Trading Symbol	OBNK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 733.5
Entity Common Stock, Shares Outstanding		23,510,945
Amendment Flag	false
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Entity CIK	0001516912
Current Fiscal Year End Date	--12-31

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and due from banks	$ 62,160	$ 71,008
Interest-bearing deposits in banks	229,358	45,670
Total cash and cash equivalents	291,518	116,678
Securities:
Available for sale	501,070	575,644
Held to maturity	28,620	19,169
Securities carried at fair value through income	11,513	11,361
Total securities	541,203	606,174
Non-marketable equity securities held in other financial institutions	39,808	42,149
Loans held for sale ($36,977 and $21,562 at fair value, respectively)	64,837	52,210
Loans, net of allowance for loan losses of $37,520 and $34,203, respectively ($17,670 and $18,571 at fair value, respectively)	4,105,675	3,754,902
Premises and equipment, net	80,457	75,014
Mortgage servicing rights	20,697	25,114
Cash surrender value of bank-owned life insurance	37,961	32,706
Goodwill and other intangible assets, net	31,540	32,861
Accrued interest receivable and other assets	110,930	83,768
Total assets	5,324,626	4,821,576
Liabilities and Stockholders' Equity
Noninterest-bearing deposits	1,077,706	951,015
Interest-bearing deposits	2,360,096	2,027,720
Time deposits	790,810	804,403
Total deposits	4,228,612	3,783,138
Federal Home Loan Bank (FHLB) advances and other borrowings	417,190	445,224
Junior subordinated debentures, net	9,671	9,644
Accrued expenses and other liabilities	69,891	33,791
Total liabilities	4,725,364	4,271,797
Commitments and contingencies	0	0
Stockholders' equity:
Preferred stock, no par value, 2,000,000 shares authorized	0	0
Common stock ($5.00 par value; 50,000,000 shares authorized; 23,480,945 and 23,726,559 shares issued at December 31, 2019 and 2018, respectively)	117,405	118,633
Additional paid‑in capital	235,623	242,041
Retained earnings	239,901	191,585
Accumulated other comprehensive income (loss)	6,333	(2,480)
Total stockholders' equity	599,262	549,779
Total liabilities and stockholders' equity	$ 5,324,626	$ 4,821,576

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Loans held for sale at fair value	$ 36,977	$ 21,562
Allowance for loan losses	$ 37,520	34,203
Loans at fair value		$ 18,571
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Common stock, par value ($ per share)	$ 5.00	$ 5.00
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	23,480,945	23,726,559

Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
Consolidated Statements of Income - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest and dividend income
Interest and fees on loans	$ 206,899	$ 169,384	$ 138,858
Investment securities-taxable	11,975	9,843	6,233
Investment securities-nontaxable	3,327	4,465	4,766
Interest and dividend income on assets held in other financial institutions	4,881	4,404	2,736
Total interest and dividend income	227,082	188,096	152,593
Interest expense
Interest-bearing deposits	44,716	29,671	19,314
FHLB advances and other borrowings	8,097	4,420	2,426
Subordinated debentures	557	553	548
Total interest expense	53,370	34,644	22,288
Net interest income	173,712	153,452	130,305
Provision for credit losses	9,568	1,014	8,336
Net interest income after provision for credit losses	164,144	152,438	121,969
Noninterest income
Mortgage banking revenue	12,309	9,620	15,806
Income (loss) on sales of securities, net	20	(8)	0
Loss on non-mortgage loans held for sale, net	0	0	(12,708)
(Loss) gain on sales and disposals of other assets, net	(333)	(170)	1,036
Limited partnership investment (loss) income	(6)	823	444
Swap fee income	2,185	927	384
Change in fair value of equity investments	367	1,977	0
Other fee income	1,490	1,811	2,176
Other income	4,410	3,786	3,236
Total noninterest income	46,478	41,240	29,187
Noninterest expense
Salaries and employee benefits	88,974	80,487	70,862
Occupancy and equipment, net	16,759	15,445	15,915
Data processing	6,961	6,182	5,209
Electronic banking	3,441	2,883	2,056
Communications	2,098	2,028	1,928
Advertising and marketing	3,808	4,275	2,923
Professional services	3,577	3,269	4,722
Regulatory assessments	1,694	2,457	2,867
Loan related expenses	4,174	3,039	4,419
Office and operations	6,674	5,881	5,498
Litigation settlement	0	0	10,000
Intangible asset amortization	1,321	961	518
Franchise tax expense	2,160	1,485	1,527
Other expenses	2,433	2,844	2,230
Total noninterest expense	144,074	131,236	130,674
Income before income taxes	66,548	62,442	20,482
Income tax expense	12,666	10,837	5,813
Net income	53,882	51,605	14,669
Preferred stock dividends	0	1,923	4,461
Net income allocated to participating stockholders	0	1,029	377
Net income available to common stockholders	$ 53,882	$ 48,653	$ 9,831
Basic earnings per common share ($ per share)	$ 2.30	$ 2.21	$ 0.51
Diluted earnings per common share ($ per share)	$ 2.28	$ 2.20	$ 0.50
Service charges and fees
Noninterest income
Revenue from contracts with customers	$ 13,859	$ 12,754	$ 11,606
Insurance commission and fee income
Noninterest income
Revenue from contracts with customers	$ 12,177	$ 9,720	$ 7,207

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 53,882	$ 51,605	$ 14,669
Securities available for sale and transferred securities:
Net unrealized holding gain (loss) arising during the period	11,439	(5,260)	(3,414)
Net losses realized as a yield adjustment in interest on investment securities	(10)	(10)	(10)
Reclassification adjustment for net (gain) loss included in net income	(20)	8	0
Change in the net unrealized gain (loss) on investment securities, before tax	11,409	(5,262)	(3,424)
Income tax benefit related to net unrealized gains (loss) arising during the period	2,396	(1,105)	(1,199)
Change in the net unrealized gain (loss) on investment securities, net of tax	9,013	(4,157)	(2,225)
Cash flow hedges:
Net unrealized (loss) gain arising during the period	(216)
Net unrealized (loss) gain arising during the period		104	4
Reclassification adjustment for loss (gain) included in net income	37
Reclassification adjustment for loss (gain) included in net income		(7)	(102)
Change in the net unrealized (loss) gain on cash flow hedges, before tax	(253)
Change in the net unrealized (loss) gain on cash flow hedges, before tax		111	106
Income tax expense related to net unrealized (loss) gain on cash flow hedges	(53)
Income tax expense related to net unrealized (loss) gain on cash flow hedges		23	37
Change in the net unrealized (loss) gain on cash flow hedges, net of tax	(200)
Change in the net unrealized (loss) gain on cash flow hedges, net of tax		88	69
Other comprehensive income (loss), net of tax	8,813	(4,069)	(2,156)
Comprehensive income	$ 62,695	$ 47,536	$ 12,513

Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands

Total

Preferred Stock Series SBLF

^[1]

Preferred Stock Series D

Common Stock

Preferred Stock

Preferred Stock Series SBLF

Preferred Stock

Preferred Stock Series D

Additional Paid-In Capital

Retained Earnings

Preferred Stock Series SBLF

^[1]

Retained Earnings

Preferred Stock Series D

Accumulated Other Comprehensive Income (loss)

Less: Retirement Plan-Owned Shares

Common shares outstanding, beginning balance (in shares) at Dec. 31, 2016

19,483,718

Stockholders' equity, beginning balance at Dec. 31, 2016

$ 420,093

$ 97,419

$ 48,260

$ 16,998

$ 145,068

$ 137,449

$ 3,463

$ (28,564)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

14,669

Other comprehensive income (loss), net of tax

(2,156)

Recognition of stock compensation, net (in shares)

35,034

Recognition of stock compensation, net

925

$ 175

750

Net change in fair value of Retirement Plan-owned (formerly ESOP) shares

(6,427)

Tax benefit of stock issuance costs

243

Dividends declared - preferred stock

$ (4,344)

$ (117)

$ (4,344)

$ (117)

Dividends declared - common stock

(2,535)

Common shares outstanding, ending balance (in shares) at Dec. 31, 2017

19,518,752

Stockholders' equity, ending balance at Dec. 31, 2017

420,351

$ 97,594

48,260

16,998

146,061

145,122

1,307

(34,991)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

51,605

Other comprehensive income (loss), net of tax

(4,069)

Recognition of stock compensation, net (in shares)

193,913

Recognition of stock compensation, net

1,998

$ 970

1,028

Termination of ESOP put option

34,991

Stock issuance - Common (in shares)

3,045,426

Stock issuance - Common

94,676

$ 15,227

79,449

Stock issuance - RCF acquisition (in shares)

66,824

Stock issuance - RCF acquisition

2,706

$ 334

2,372

Redemption of preferred stock - Series SBLF

(48,260)

Conversion of preferred stock - Series D to common stock (in shares)

901,644

Conversion of preferred stock - Series D to common stock

$ 4,508

(16,998)

12,490

Tax benefit of stock issuance costs

641

Dividends declared - preferred stock

$ (1,894)

$ (29)

$ (1,894)

$ (29)

Dividends declared - common stock

(2,937)

Common shares outstanding, ending balance (in shares) at Dec. 31, 2018

23,726,559

Stockholders' equity, ending balance at Dec. 31, 2018

549,779

$ 118,633

242,041

191,585

(2,480)

Increase (Decrease) in Stockholders' Equity [Roll Forward]

Net income

53,882

Other comprehensive income (loss), net of tax

8,813

Recognition of stock compensation, net (in shares)

54,386

Recognition of stock compensation, net

2,413

$ 272

2,141

Dividends declared - common stock

(5,887)

Repurchase of common stock (in shares)

(300,000)

Repurchase of common stock

(10,059)

$ (1,500)

(8,559)

Common shares outstanding, ending balance (in shares) at Dec. 31, 2019

23,480,945

Stockholders' equity, ending balance at Dec. 31, 2019

$ 599,262

$ 117,405

$ 0

$ 235,623

$ 239,901

$ 6,333

$ 0

[1]	The dividend rate on the Senior Non-Cumulative Perpetual Preferred stock, Series SBLF ("SBLF preferred stock") was payable quarterly at a fixed annual rate of 9%. The Company redeemed all 48,260 shares of the SBLF preferred stock in June 2018.

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	1 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Common stock dividends declared ($ per share)			$ 0.25	$ 0.13	$ 0.13
Preferred Stock Series SBLF
Fixed annual rate		9.00%
Shares redeemed (in shares)	48,260

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 53,882	$ 51,605	$ 14,669
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	9,568	1,014	8,336
Depreciation and amortization	6,706	5,869	5,852
Net amortization on securities	975	1,138	1,416
Amortization of investments in tax credit funds	1,608	1,899	2,629
Net realized (gain) loss on securities sold	(20)	8	0
Deferred income tax (benefit) expense	(2,596)	5,637	4,931
Stock-based compensation expense	2,247	1,462	1,150
Originations of mortgage loans held for sale	(353,090)	(300,093)	(500,234)
Proceeds from mortgage loans held for sale	334,958	309,153	517,326
Gain on mortgage loans held for sale, including origination of servicing rights	(6,943)	(6,403)
Gain on mortgage loans held for sale, including origination of servicing rights	(6,943)	(6,403)	(11,615)
Mortgage servicing rights valuation adjustment	7,012	963	6,014
Net loss (gain) on disposals of premises and equipment	139	75	(1,434)
Loss on non-mortgage loans held for sale	0	0	12,708
Increase in the cash surrender value of life insurance	(755)	(713)	(631)
Gain on equity securities without a readily determinable fair value	(367)	(1,977)	0
Net losses on sales and write downs of other real estate owned	194	95	398
Other operating activities, net	8,035	8,094	473
Net cash provided by operating activities	61,553	77,826	61,988
Cash flows from investing activities:
Cash paid for business combinations, net of cash acquired	0	(6,596)	0
Purchases of securities available for sale	(94,544)	(477,548)	(443,033)
Maturities, paydowns and calls of securities available for sale	154,473	279,152	409,180
Proceeds from sales of securities available for sale	27,766	20,877	0
Purchase of securities held to maturity	(10,000)	0	0
Maturities, paydowns and calls of securities held to maturity	541	1,018	520
Paydowns of securities carried at fair value	434	414	381
Net (sales) purchases of non-marketable equity securities held in other financial institutions	3,386	(17,026)	(3,199)
Paydowns and proceeds from non-mortgage loans held for sale	0	0	13,260
Originations of mortgage warehouse loans	(4,306,171)	(4,495,650)	(4,343,469)
Proceeds from pay-offs of mortgage warehouse loans	4,239,381	4,542,822	4,344,800
Net increase in loans, excluding mortgage warehouse and loans held for sale	(290,278)	(601,153)	(179,383)
Purchase of bank-owned life insurance	(4,500)	(4,000)	0
Return of capital on limited partnership investments	503	456	844
Capital calls on limited partnership investments	(1,521)	(2,838)	(2,175)
Purchases of premises and equipment	(11,152)	(5,482)	(3,031)
Proceeds from sales of premises and equipment	27	111	4,411
Proceeds from sales of other real estate owned	470	516	3,244
Net cash used in investing activities	(291,185)	(764,927)	(197,650)
Cash flows from financing activities:
Net increase in deposits	445,474	271,124	68,748
Proceeds from long-term FHLB advances	100,000	250,000	0
Repayments on long-term FHLB advances	(101,649)	(51,342)	(1,294)
Proceeds from short-term FHLB advances	2,815,000	667,065	0
Repayments on short-term FHLB advances	(2,815,000)	(567,065)	0
Net increase in other borrowed funds	0	1,164	0
Net (decrease) increase in securities sold under agreements to repurchase	(23,597)	4,135	2,733
Dividends paid	(5,863)	(5,941)	(6,996)
Taxes paid related to net share settlement of equity awards	0	(25)	(348)
Cash received from exercise of stock options	166	559	123
Proceeds from issuance of common stock, net of offering expenses	0	95,178	0
Redemption of Series SBLF preferred stock	0	(48,260)	0
Common stock repurchased	(10,059)	0	0
Net cash provided by financing activities	404,472	616,592	62,966
Net increase (decrease) in cash and cash equivalents	174,840	(70,509)	(72,696)
Cash and cash equivalents at beginning of period	116,678	187,187	259,883
Cash and cash equivalents at end of period	291,518	116,678	187,187
Interest paid	53,227	34,390	22,686
Income taxes paid	10,023	675	5,268
Significant non-cash transactions:
Unsettled liability for investment purchases recorded at trade date	2,659	0	0
Real estate acquired in settlement of loans	1,577	1,057	749
Conversion of Series D preferred stock to common stock	0	16,998	0
Fair value of common stock issued in conjunction with business combination	$ 0	$ 2,706	$ 0

Significant Accounting Policies	12 Months Ended
Significant Accounting Policies	Dec. 31, 2019
Accounting Policies [Abstract]
Significant Accounting Policies	Note 1 - Significant Accounting Policies Nature of Operations. Origin Bancorp, Inc. ("Company") is a financial holding company headquartered in Ruston, Louisiana. The Company's wholly owned bank subsidiary, Origin Bank ("Bank"), provides a broad range of financial services to businesses, municipalities, high net worth individuals and retail clients. The Company currently operates 43 banking centers located in North Louisiana, Central Mississippi, Dallas/Fort Worth and Houston, Texas. The Company principally operates in one business segment, community banking. Basis of Presentation. The consolidated financial statements include the accounts of the Company and all other entities in which Origin Bancorp, Inc. has a controlling financial interest, including the Bank and Davison Insurance Agency, LLC ("Davison Insurance"), doing business as Thomas & Farr Agency, and Reeves, Coon and Funderburg ("RCF"). All significant intercompany balances and transactions have been eliminated in consolidation. The Company's accounting and financial reporting policies conform, in all material respects, to accounting principles generally accepted in the United States ("U.S. GAAP") and to general practices within the financial services industry. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued. Reclassifications. Certain amounts previously reported have been reclassified to conform to the current presentation. Such reclassifications had no effect on prior year net income or stockholders' equity. Variable Interest Entities. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity ("VIE") under U.S. GAAP. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity's activities. The Company consolidates voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, VIEs are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. The Company's wholly owned subsidiaries CTB Statutory Trust I and First Louisiana Statutory Trust I are VIEs for which the Company is not the primary beneficiary. Accordingly, the accounts of these trusts are not included in the Company's consolidated financial statements. Operating Segments. Operating segments are components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision-maker in deciding how to allocate resources and in assessing performance. The Bank is the only significant subsidiary upon which management makes decisions regarding how to allocate resources and assess performance. Individual bank branches offer a group of similar services, including commercial, real estate and consumer loans, time deposits, checking and savings accounts, all with similar operating and economic characteristics. While the chief operating decision-maker monitors the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Company-wide basis. Accordingly, all of the community banking services and branch locations are considered by management to be aggregated into one reportable operating segment, community banking. Use of Estimates. To prepare financial statements in conformity with U.S. GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Material estimates that are subject to significant change in the near term are the allowance for loan losses, valuation of other real estate owned, fair value of mortgage servicing rights, realization of deferred tax assets, fair values of financial instruments and the status of contingencies. Actual results could differ from those estimates. Cash and Cash Equivalents. For purposes of the statement of cash flows, the Company considers all cash on hand, demand deposits with other banks, federal funds sold and short term interest-bearing cash items with an original maturity less than 90 days to be cash equivalents. The Company maintains deposits with other financial institutions in amounts that exceed federal deposit insurance coverage. Furthermore, federal funds sold are essentially uncollateralized loans to other financial institutions. Management regularly evaluates the credit risk associated with the counterparties to these transactions and believes that the Company is not exposed to any significant credit risks on cash and cash equivalents. At December 31, 2019 and 2018 the Company had cash collateral required to be held with counterparties on certain derivative transactions as discussed in Note 12 - Derivative Financial Instruments. At December 31, 2019 and 2018 the Company had no reserve requirement for cash balances with the Federal Reserve. Securities. The Company accounts for debt and equity securities as follows: Available for Sale ("AFS") - Debt and equity securities that will be held for indefinite periods of time, including securities that may be sold in response to changes in market interest or prepayment rates, needs for liquidity and changes in the availability of and the yield of alternative investments are classified as AFS. These assets are carried at fair value. Fair value is determined using published quotes. If quoted market prices are not available, fair values are based on other methods including, but not limited to the discounting of cash flows. Held to Maturity ("HTM") - Debt securities that management has the positive intent and ability to hold until maturity are classified as HTM and are carried at their remaining unpaid principal balance, net of unamortized premiums or unaccreted discounts. Securities Carried at Fair Value through Income - Debt securities for which the Company has elected the fair value option for accounting are classified as securities carried at fair value through income. Management has elected the fair value option for these items to offset the corresponding change in fair value of related interest rate swap agreements. Fair value is determined using discounted cash flows and credit quality indicators. Changes in fair value are reported through the consolidated statements of income as a part of other noninterest income. Unrealized gains and losses on AFS securities are excluded from earnings and reported net of tax in accumulated other comprehensive income until realized. Declines in the fair value of AFS and HTM securities below their cost are reflected in earnings as realized losses to the extent the impairment is deemed to be other-than-temporary credit losses. In estimating other-than-temporary impairment losses, management considers (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) management's intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. The amount of the impairment related to other factors is recognized in other comprehensive income unless there is no ability or intent to hold to recovery. Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities to the earlier of the call date or maturity date. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. Non-marketable Equity Securities Held in Other Financial Institutions. Securities with limited marketability, such as stock in the Federal Reserve Bank of Dallas ("FRB") or the Federal Home Loan Bank of Dallas ("FHLB"), are carried at cost, less impairment, if any. These investments in stock do not have readily determinable fair values. The Company's remaining equity investments in other financial institutions, totaling $12.1 million and $11.7 million at December 31, 2019 and 2018, respectively, qualify for the practicability exception under Accounting Standards Update ("ASU") 2016-01 due to having illiquid markets and are carried at cost, less impairment, plus or minus any observable price changes. The carrying value of these securities was evaluated and was determined not to be impaired for the years ended December 31, 2019, 2018 and 2017. Loans Held for Sale. Loans held for sale include mortgage loans and are carried at fair value, with unrealized gains and losses recorded in the consolidated statements of income. Forward commitments to sell mortgage loans are acquired to reduce market risk on mortgage loans in the process of origination and mortgage loans held for sale. The forward commitments acquired by the Company for mortgage loans in process of origination are mandatory forward commitments, and the Company is required to substitute another loan or to buy back the commitment if the original loan does not fund. Typically, the Company delivers the mortgage loans within a few days after the loans are funded. These commitments are derivative instruments carried at fair value. Gains and losses resulting from sales of mortgage loans are realized when the respective loans are sold to investors. Gains and losses are determined by the difference between the selling price (including the fair value of any items such as mortgage servicing rights) and the carrying amount of the loans sold. Fees received from borrowers to guarantee the funding of mortgage loans held for sale are recognized as income or expense when the loans are sold or when it becomes evident that the commitment will not be used. Loans. Loans that management has the intent and ability to hold for the foreseeable future, or until maturity or payoff, are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and any deferred fees or costs on originated loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, and certain direct origination costs, are deferred and amortized as a yield adjustment over the lives of the related loans using the interest method. Late fees are recognized as income when earned, assuming collectability is reasonably assured. The Company has elected the fair value option on a small portion of its loans held for investment, with changes in fair value recorded in noninterest income. For these loans, the earned current contractual interest payment is recognized in interest income. Loan origination costs and fees are recognized in earnings as incurred and not deferred. Because these loans are recognized at fair value, the Company's allowance for loan losses policy does not apply to these loans. Fair value is determined using discounted cash flows and credit quality indicators. In addition to loans issued in the normal course of business, the Company considers overdrafts on customer deposit accounts to be loans and classifies these overdrafts as loans in its consolidated balance sheets. Loans are placed on nonaccrual status when management believes that the borrower's financial condition, after giving consideration to economic and business conditions and collection efforts, is such that collection of interest is doubtful, or generally when loans are 90 days or more past due. When accrual of interest is discontinued, all unpaid accrued interest is reversed. Past due status is based on contractual terms of the loan. Interest income on nonaccrual loans may be recognized to the extent cash payments are received, but payments received are usually applied to principal. Nonaccrual loans are generally returned to accrual status when principal and interest payments are less than 90 days past due, the customer has made required payments for at least six months, and the Company reasonably expects to collect all principal and interest. Allowance for Loan Losses. The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. The allowance for loan losses is evaluated on a regular basis by management and is based upon management's periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower's ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. Loans are charged off against the allowance for loan losses when management believes the loss is confirmed. Subsequent recoveries, if any, are credited to the allowance. The allowance consists of allocated and general components. The allocated component relates to loans that are classified as impaired, and an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component relates to loans that are not classified as impaired and is based on historical charge-off experience and the expected loss, given default, derived from the Company's internal risk rating process. Other adjustments may be made to the allowance for pools of loans after an assessment of internal or external influences on credit quality that are not fully reflected in the historical loss or risk rating data. Delinquency statistics are updated at least monthly and are the most meaningful indicator of the credit quality of one-to-four single family residential, home equity loans and lines of credit and other consumer loans. Internal risk ratings are considered the most meaningful indicator of credit quality for commercial and industrial, construction, and commercial real estate loans. Internal risk ratings are a key factor in identifying loans that are individually evaluated for impairment and impact management's estimates of loss factors used in determining the amount of the allowance for loan losses. Internal risk ratings are updated on a regular basis. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Impaired loans include nonperforming loans and loans modified in troubled debt restructurings ("TDRs"). TDRs are loans for which the contractual terms on the loan have been modified and both of the following conditions exist: (1) the borrower is experiencing financial difficulty and (2) the restructuring constitutes a concession. Concessions could include a reduction in the interest rate on the loan, payment extensions, forgiveness of principal, forbearance or other actions intended to maximize collection. The Company assesses all loan modifications to determine whether they constitute a TDR. All TDRs are considered impaired loans. Impairment is measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's obtainable market price or the fair value of the collateral if the loan is collateral dependent. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Premises and Equipment, net. Land is carried at cost. Buildings and improvements are stated at cost less accumulated depreciation computed using the straight-line method over the estimated useful lives of the assets, which range from 35 to 39 years. Furniture, fixtures, and equipment are stated at cost less accumulated depreciation computed using the straight-line method over the estimated useful lives of the assets, which range from three to seven years. Leases. The Company adopted ASU No. 2016-02 — Leases (Topic 842) as of January 1, 2019, and recorded a $19.7 million right-of-use ("ROU") asset offset by a $19.4 million lease liability, recognizing a net after tax $321,000 cumulative effect adjustment credit to retained earnings. The Company elected the package of practical expedients, which among other things, does not require reassessment of lease classification. The Company determines if an arrangement is a lease at inception. Operating lease assets are included in accrued interest receivable and other assets, operating lease liabilities are included in accrued expenses and other liabilities in the Company's consolidated balance sheets. The Company has made an accounting policy election not to recognize short-term lease assets and liabilities (less than a 12-month term) or immaterial equipment and server space leases in its balance sheets; instead, the Company recognizes the lease expense for these leases on a straight-line basis over the life of the lease. The Company has no material finance leases. ROU assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent the Company's obligation to make lease payments arising from the lease. ROU lease assets and liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. The Company uses an estimated incremental collateralized borrowing rate, which is derived from information available at the lease commencement date and gives consideration to the applicable FHLB borrowing rates, when determining the present value of lease payments. The Company's lease terms include options to extend a lease when it is reasonably certain that the Company will exercise that option. The Company's lease agreements do not contain any residual value guarantees. All of the Company's operating long-term leases are real estate leases, which are accounted for as a single lease component. Mortgage Servicing Rights and Transfers of Financial Assets. Gains or losses on "servicing-retained" loan sale transactions generally include a component reflecting the differential between the contractual interest rate of the loan and the interest rate to be received by the investor. The present value of the estimated future profit for servicing the loans is also taken into account in determining the amount of gain or loss on the sale of these loans. For loans sold servicing-retained, the fair value of mortgage servicing rights is recorded as an asset, with their value estimated using a discounted cash flow methodology to arrive at the present value of future expected earnings from the servicing of the loans. Significant model inputs include prepayment speeds, discount rates, and servicing costs. Servicing revenues are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned. Loans sold into the secondary market are considered transfers of financial assets. These transfers are accounted for as sales when control over the asset has been surrendered, which is deemed to have occurred when: an asset does not have any claims to it by the transferor or their creditors, including in bankruptcy or other receivership situations; the transferee obtains the unconditional right to pledge or exchange the asset; or the transfer does not include a repurchase provision above the limited recourse provisions of these loan sales. Derivative Instruments and Hedging Activities. All derivatives are recorded on the accompanying consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. During the term of a cash flow hedge contract the effective portion of changes in fair value in the derivative instrument are recorded in accumulated other comprehensive income. Changes in the fair value of derivatives to which hedge accounting does not apply are recognized immediately in earnings. Note 12 - Derivative Financial Instruments describes the derivative instruments currently used by the Company and discloses how these derivatives impact its consolidated balance sheets and statements of income. Goodwill and Other Intangible Assets. Goodwill, which represents the excess of cost over the fair value of the net assets of an acquired business, is not amortized but tested for impairment on an annual basis, which is October 1 for the Company, or more often if events or circumstances indicate that there may be impairment. Other intangible assets, such as relationship based intangibles and core deposit intangibles, are amortized on a basis consistent with the receipt of economic benefit to us. Such assets are evaluated at least annually as to the recoverability of their carrying value for potential impairment. In the quarter following the period in which identified intangible assets become fully amortized, the fully amortized balances are removed from the gross asset and accumulated amortization amounts. Other Real Estate Owned. Other real estate owned ("OREO") represents properties acquired through foreclosure or acceptance of a deed in lieu of foreclosure on loans on which the borrowers have defaulted as to payment of principal and interest. OREO also includes bank-owned real estate which the Company is no longer utilizing and intends to sell. These properties are initially recorded at fair value, less cost to sell, at the date of foreclosure establishing a new cost basis. Fair value is determined based on third party appraisals. Any subsequent capital improvements that increase value are added to the balance of the properties. Any valuation adjustments required at the date of transfer from loans to OREO are charged to the allowance for loan losses. Any subsequent write-downs to reflect current fair value, or gains and losses on the sale of the properties are charged to noninterest income. At December 31, 2019 and 2018, the balance of OREO was $4.7 million and $3.7 million, respectively, and included as a component of other assets in the accompanying consolidated balance sheets. Overnight Repurchase Agreements with Depositors. The Company enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Company may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates it to repurchase the assets. Securities sold under agreements to repurchase generally mature on the banking day following that on which the investment was initially sold and are treated as collateralized financing transactions which are recorded at the amounts at which the securities were sold plus accrued interest. Interest rates and maturity dates of the securities involved vary and are not intended to be matched with funds from customers. Mortgage Banking Revenue. This revenue category primarily reflects the Company's mortgage production, sales and mortgage servicing revenue, including fees and income derived from mortgages originated with the intent to sell; mortgage sales and servicing; and the impact of risk management activities associated with the mortgage pipeline and mortgage servicing rights ("MSRs"). This revenue category also includes gains and losses on sales and changes in fair value for mortgage loans originated with the intent to sell and measured at fair value under the fair value option. Changes in the fair value of MSRs are reported in mortgage banking revenue. Net interest income from mortgage loans is recorded in interest income. Income Taxes. Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized. A tax position is recognized as a benefit only if it is "more likely than not" that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the "more likely than not" test, no tax benefit is recorded. The Company did not have any amount accrued with respect to uncertainty in income taxes at December 31, 2019 and 2018. The Company recognizes interest and/or penalties related to income tax matters as a component of noninterest expense. There were no penalties or related interest for the years ended December 31, 2019, 2018 or 2017. Federal income tax expense or benefit has been allocated to subsidiaries on a separate return basis. Stock-Based Compensation. The cost of employee services received in exchange for stock options or restricted stock grants are measured using the fair value of the award on the grant date and is recognized over the service period. Other Investments. The Company accounts for investments in limited partnerships, limited liability companies ("LLCs"), and other privately held companies using either the equity method of accounting or at amortized cost net of impairments and observable price changes. The accounting treatment depends upon the Company's percentage ownership or degree of management influence. Under the equity method of accounting, the Company records its initial investment at cost. Subsequently, the carrying amount of the investment is increased or decreased to reflect its share of income or loss of the investee. The Company's recognition of earnings or losses from an equity method investment is based on its ownership percentage in the investee and the investee's earnings for the reporting period, and is recorded on a one-quarter lag. All of the Company's investments in limited partnerships, LLCs, and other companies are privately held, and their fair values are not readily available. Management evaluates the investments in investees for impairment based on the investee's ability to generate cash through its operations or obtain alternative financing, and other subjective factors. There are inherent risks associated with investments in such companies, which may result in volatility in the consolidated statements of income in future periods. At December 31, 2019 and 2018, investments in limited partnerships, LLCs and other privately held companies totaled $16.0 million and $14.5 million, respectively, and were included in other assets in the accompanying consolidated balance sheets. Investments in Tax Credit Entities. As part of its Community Reinvestment Act responsibilities and due to their favorable economic characteristics, the Company invests in tax credit-motivated projects primarily in the markets it serves. These projects are directed at tax credits issued under Low-Income Housing Tax Credits. The Company generates returns on tax credit motivated projects through the receipt of federal, and if applicable, state tax credits. The federal tax credits are recorded as an offset to the income tax provision in the year that they are earned under federal income tax law – over 10 to 15 years beginning in the year in which rental activity commences. These credits, if not used in the tax return for the year of origination, can be carried forward for 20 years. The Company invests in a tax credit entity, usually an LLC, which owns the real estate. The Company receives a nonvoting interest in the entity that must be retained during the compliance period for the credits (15 years for Low-Income Housing Tax Credit programs). Control of the tax credit entity rests in the 0.1% interest general partner, who has the power and authority to make decisions that impact economic performance of the project and is required to oversee and manage the project. Due to the lack of any voting, economic, or managerial control, and due to the contractual reduction in the investment, the Company accounts for its investment by amortizing the investment, beginning at the issuance of the certificate of occupancy of the project, over the compliance period, as management believes any potential residual value in the real estate will have limited value. Amortization is included as a component of income tax expense. The Company has the risk of credit recapture if the project does not maintain compliance during the compliance period. No such events have occurred to date. At December 31, 2019 and 2018, the Company had investments in tax credit entities of $9.0 million and $10.6 million, respectively, which are included in other assets in the accompanying consolidated balance sheets. Earnings Per Share. Basic and diluted earnings per common share for periods beginning after December 31, 2018, are calculated using the treasury method. Under the treasury method, basic earnings per share is calculated as net income divided by the weighted average number of common shares outstanding during the period. Diluted earnings per share includes the dilutive effect of additional potential common shares issuable under stock options and restricted stock awards. Basic and diluted earnings per common share for periods ending on or before December 31, 2018, were calculated using the two-class method. The two-class method is an earnings allocation formula that determines earnings per share for each share of common stock and participating securities according to dividends declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed earnings were allocated between common and participating security stockholders based on their respective rights to receive dividends. Share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents were considered participating securities (e.g., restricted stock grants). Preferred stock that receives dividends based on dividends paid on common stock was also considered a participating security (e.g., Series D preferred stock). Net income attributable to common stockholders was then divided by the weighted average number of common shares outstanding during the period, net of participating securities. Diluted income per common share considers common stock issuable under the assumed release of unvested restricted stock awards, convertible preferred stock being converted to common stock, and the assumed exercise of stock options granted. The dilutive effect of share-based payment awards that are not deemed to be participating securities is calculated using the treasury stock method, which assumes that the proceeds from exercise are used to purchase common stock at the average market price for the period. The dilutive effect of participating securities is calculated using the more dilutive of the treasury stock method (which assumes that the participating securities are exercised/released) or the two-class method (which assumes that the participating securities are not exercised/released and earnings are reallocated between common and participating security stockholders). Potentially dilutive common stock equivalents are excluded from the computation of diluted earnings per common share in periods in which the effect would be antidilutive. Effect of Recently Adopted Accounting Standards ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Since these amendments only relate to the reclassification of the income tax effects of the Tax Cuts and Jobs Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. These amendments require that an entity disclose a description of the accounting policy for releasing income tax effects from accumulated other comprehensive income. These amendments are effective for fiscal years beginning after December 15, 2018, and interim periods within those years. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. These amendments should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. Rather than adjusting income tax expense for the differences as the effect of the change in the U.S. federal corporate income tax rates are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment. The Company adopted this guidance during the first quarter of 2018, which resulted in a reclassification of $282,000 from accumulated other comprehensive income to retained earnings. The Company's policy is to release material stranded tax effects on a specific identification basis. ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 permits hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk. It also changes the guidance for designating fair value hedges of interest rate risk and for measuring the change in fair value of the hedged item in fair value hedges of interest rate risk. In addition to the amendments to the designation and measurement guidance for qualifying hedging relationships, the amendments in this ASU also align the recognition and presentation of the effects of the hedging instrument and the hedged item in the consolidated financial statements. This ASU requires an entity to present the earnings effect of the hedging instrument in the same line item in the statement of income in which the earnings effect of the hedged item is reported. For public entities, these amendments were effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early application was permitted. The Company analyzed its hedges and determined that the amendments in this ASU were not applicable to any hedge relationships in effect and therefore, no transition adjustment was necessary. The Company adopted this ASU during the first quarter of 2018. ASU No. 2016-15 —Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 adds or clarifies guidance on the classification of certain cash receipts and payments in the statement of cash flows. The Company adopted this guidance on January 1, 2018, and, as a result, reclassified $844,000 of return of capital proceeds from limited partnership investments from operating activities to investing activities for the year ended December 31, 2017. ASU No. 2016-02 — Leases (Topic 842). ASU 2016-02 requires lessees to recognize a lease liability and a right-of use ("ROU") asset on the balance sheet for operating leases. Accounting for finance (formerly known as capital) leases is substantially unchanged. The Company adopted this ASU as of January 1, 2019. Please see the Leases paragraphs above in this footnote for more information. ASU No. 2016-01 —Financial Instruments —Overall (Subtopic 825-10). The Company adopted this update effective January 1, 2018. The main provisions are to eliminate the AFS classification of accounting for equity securities and to adjust the fair value disclosures for financial instruments carried at amortized cost such that the disclosed fair values represent an exit price as opposed to an entry price. The majority of the Company's equity investments qualify for the practical expedient allowed for equity securities without a readily determinable fair value, such that the Company has elected to carry these securities at cost adjusted for any observable transactions during the period, less any impairment. To date, no impairment has been recorded on the Company's investments in equity securities which do not have readily determinable fair values. The disclosure of fair value of the loan and interest-bearing deposit portfolios has been presented using an exit price methodology and had an immaterial impact on the Company's financial position. ASU No. 2014-09 —Revenue from Contracts with Customers (Topic 606). The Company adopted this ASU on January 1, 2018, which outlines a single comprehensive revenue recognition model for entities to follow in accounting for revenue from contracts with customers. The implementation of this new guidance did not have a material impact on the measurement or recognition of revenue and no cumulative effect adjustment was recorded to opening retained earnings. Results for reporting periods beginning after January 1, 2018, are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company's historic accounting under Topic 605. The majority of the Company's revenue is generated from sources outside the scope of Topic 606. Interest and fees on loans, income from investment securities and mortgage banking revenue are all outside the scope of Topic 606 and are recorded in adherence with U.S. GAAP. Service charges and fees on deposit accounts, credit card interchange, insurance commission and fee income, as well as gains and losses on the sale of other assets including OREO are within the scope of Topic 606; however, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Descriptions of the Company's revenue generating activities that are within the scope of Topic 606 are described below. Service charges and fees on deposit accounts Service charges and fees on deposit accounts are primarily comprised of maintenance fees, service fees, stop payment and insufficient funds fees. The Company's performance obligation for service fees or other fees covering a period of time are generally satisfied, and related revenue recognized, over the period in which the service is provided. The Company's performance obligations for transactional-based fees are generally satisfied, and related revenue recognized, at a point in time. Insurance commission and fee income The Company earns commission income through production on behalf of insurance carriers and also earns fee income by providing complementary services such as collection of premiums. In most instances the Company considers the performance obligation to be complete at the time the service was rendered. Credit card interchange income The Company records credit card interchange income at a point in time as card transactions occur. The Company's performance obligation for these transactions is deemed to have occurred upon completion of each transaction. The amounts are included as a component of other income in the consolidated statements of income. Gain or loss on sale of other assets and OREO In the normal course of business, the Company recognizes the sale on other assets and OREO, along with any gain or loss, when control of the property transfers to the buyer through an executed contractual agreement. The transaction price is fixed, and on occasion the Company will finance a portion of the purchase price of the transferred asset. ASU No. 2018-15, Intangibles, Goodwill and Other, Internal Use Software - (Topic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). Accordingly, the amendments require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments also require the entity (customer) to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangement, which includes reasonably certain renewals. For public business entities that file reports with the Securities and Exchange Commission ("SEC"), the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, early adoption is permitted. The Company prospectively adopted ASU 2018-15 effective October 1, 2018. As a result of this implementation, capitalized costs relating to internal use software totaled $455,000 at December 31, 2018, and are expensed over the useful life of the contract rather than expensed as incurred. The asset is reflected on the consolidated balance sheets in accrued interest receivable and other assets and the related amortization expense is reflected in data processing expense on the consolidated statements of income. Effect of Newly Issued But Not Yet Effective Accounting Standards ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments; ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses; ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments; ASU 2019-05, Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief; ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses; collectively, the "ASUs". These ASUs introduce and amend ASC Topic 326, Financial Instruments - Credit Losses and amend guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, Topic 326 eliminates the current incurred loss approach and, instead, requires an entity to reflect its current estimate of all expected credit losses. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected. This guidance also changes the accounting for purchased loans and securities with credit deterioration. Topic 326 also applies to off-balance sheet exposures such as unfunded loan commitments, letters of credit and other financial guarantees. Expected credit losses related to off-balance sheet exposures will be presented as a liability rather than as an allowance. The ASUs allow for certain accounting policy elections related to the treatment of accrued interest, the amortized cost components of charged-off balances, the treatment of prepayment assumptions related to discounted cash flow methodology and a limited use of the fair value option. Topic 326 retains many of the current required disclosures, expands certain disclosures and adds some additional disclosures. For available for sale debt securities, entities are required to determine whether all or a portion of the unrealized loss on those securities is a credit loss. The guidance also eliminates the option for management to consider the length of time a security has been in an unrealized loss position as a factor in determining whether or not a credit loss exists. Topic 326 requires that credit losses be presented as an allowance for credit losses rather than as a direct write-down of the investment balance. This change allows improvements in credit quality to be recognized in earnings. The Company has made significant changes in the processes and procedures to calculate the allowance for credit losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In order to validate the operations and outputs associated with these ASUs, the Company is running parallel models and has made substantial progress toward (1) defining risk characteristics and creating loan pools based on those characteristics, (2) determining internal and external data sources that will be used, (3) deciding the loss methodologies that will be used, (4) calculating historical loss data and making appropriate adjustments using internal and external sources, (5) developing and refining an economic forecasting model, (6) documenting processes, procedures and model assumptions, (7) developing accounting policies relevant to the credit loss estimation process and (8) developing internal control procedures around the credit loss estimation process. For public business entities that are SEC filers, the ASUs are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company will implement these amendments in its fiscal year beginning January 1, 2020. Upon adoption of these ASUs, the Company recognized a one-time, after tax cumulative effect adjustment of $760,000 to retained earnings at the beginning of the first quarter of 2020, increasing the allowance for credit losses by approximately $1.3 million and decreasing the off-balance sheet reserve by $382,000. The Company's held-to-maturity and available for sale securities were not materially affected by the adoption of this ASU due to the nature of the portfolios which consist of approximately 73% of U.S. government agency and mortgage-backed securities. Our adjustment to the allowance for credit losses at the transition date may vary from our estimate due to refinements in the loss estimation models or factors. ASU No. 2018-13, Fair Value Measurement - (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments in this ASU modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in Financial Accounting Standards Board ("FASB") Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements, including the consideration of costs and benefits. For public business entities that file reports with the SEC, the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The implementation of this ASU will not materially impact the consolidated financial statements. Certain fair value disclosures will be revised to comply with this ASU. ASU No. 2019-10, Financial Instruments —Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842). ASU 2019-10 defers the effective dates related to (1) ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (Credit Losses), (2) ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (Hedging) and (3) ASU 2016-02, Leases (Topic 842) (Leases) for non-SEC filers. The ASU amends the effective date for SEC filers for ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment to periods beginning after December 15, 2019, aligning it with the effective date for Credit Losses. The impact of this ASU alleviates step 2 of the goodwill impairment test effective January 1, 2020. The implementation of this ASU will not materially impact the consolidated financial statements or disclosures. The effective date of this ASU was November 15, 2019. ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 simplifies the accounting for income taxes by eliminating some exceptions to the general approach in Accounting Standards Codification (ASC) 740, Income Taxes. It also clarifies certain aspects of the existing guidance to promote more consistent application, among other things. The amendments in the update are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The Company is evaluating the impact of this ASU on the consolidated financial statements and disclosures.

Earnings Per Share

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Earnings Per Share

Note 2 - Earnings Per Share



(Dollars in thousands, except per share amounts)	Years Ended December 31,
Basic earnings per common share	2019		2018		2017
Net income	$	53,882	$	51,605	$	14,669
Less: Dividends to preferred stock ⁽¹⁾	—		1,923		4,461
Net income allocated to participating stockholders ^{(1) (2)}	—		1,029		377
Net income available to common stockholders ⁽³⁾	$	53,882	$	48,653	$	9,831
Weighted average common shares outstanding	23,470,746		21,995,990		19,418,278
Basic earnings per common share	$	2.30	$	2.21	$	0.51
Diluted earnings per common share
Diluted earnings applicable to common stockholders ⁽³⁾	$	53,882	$	48,819	$	9,861
Weighted average diluted common shares outstanding:
Weighted average common shares outstanding	23,470,746		21,995,990		19,418,278
Dilutive effect of common stock options	203,319		198,439		216,134
Weighted average diluted common shares outstanding	23,674,065		22,194,429		19,634,412
Diluted earnings per common share	$	2.28	$	2.20	$	0.50

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Participating stockholders include those that hold certain share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents. Such shares or units are considered participating securities (i.e., nonvested restricted stock grants). Additionally, for period prior to June 30, 2018, Series D preferred stockholders were participating stockholders as those shares participate in dividends with common shares on a one for one basis. Net income allocated to participating stockholders does not include dividends paid to preferred stockholders.


⁽²⁾	The average participating share count for the calculation of earnings per share for the year ended December 31, 2018, includes an allocation for Series D preferred stockholders, which were converted to common stock during the quarter ended June 30, 2018.

⁽³⁾

Net income available to common stockholders for basic and diluted earnings per share may differ under the two-class method as a result of adding common stock equivalents for options to dilutive shares outstanding, which alters the ratio used to allocate earnings to common stockholders and participating securities for the purposes of calculating diluted earnings per share.

Securities

12 Months Ended

Dec. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Securities

Note 3 - Securities

The following table is a summary of the amortized cost and estimated fair value, including gross unrealized gains and losses, of available for sale, held to maturity and securities carried at fair value through income for the dates indicated:



(Dollars in thousands) December 31, 2019	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for sale:
State and municipal securities	$	96,180	$	3,039	$	(35	)	$	99,184
Corporate bonds	16,037		780		—			16,817
U.S. government and agency securities	5,063		183		(8		)	5,238
Commercial mortgage-backed securities	11,882		262		—			12,144
Residential mortgage-backed securities	204,650		3,105		(249		)	207,506
Commercial collateralized mortgage obligations	4,321		73		—			4,394
Residential collateralized mortgage obligations	154,925		1,186		(324		)	155,787
Total	$	493,058	$	8,628	$	(616	)	$	501,070
Held to maturity:
State and municipal securities	$	28,620	$	903	$	—		$	29,523
Securities carried at fair value through income:
State and municipal securities⁽¹⁾	$	11,070	$	—	$	—		$	11,513

December 31, 2018
Available for sale:
State and municipal securities	$	99,780	$	1,266	$	(163	)	$	100,883
Corporate bonds	10,997		102		(65		)	11,034
U.S. government and agency securities	61,122		82		(54		)	61,150
Commercial mortgage-backed securities	16,672		94		—			16,766
Residential mortgage-backed securities	188,058		417		(2,160		)	186,315
Residential collateralized mortgage obligations	202,422		315		(3,241		)	199,496
Total	$	579,051	$	2,276	$	(5,683	)	$	575,644
Held to maturity:
State and municipal securities	$	19,169	$	—	$	(33	)	$	19,136
Securities carried at fair value through income:
State and municipal securities⁽¹⁾	$	11,503	$	—	$	—		$	11,361

____________________________


⁽¹⁾	Securities carried at fair value through income have no unrealized gains or losses at the balance sheet date as all changes in value have been recognized in the consolidated statements of income. See Note 5 - Fair Value of Financial Instruments for more information.

Securities with unrealized losses at December 31, 2019 and 2018, aggregated by investment category and those individual securities that have been in a continuous unrealized loss position for less than 12 months, and for 12 months or more, were as follows. There were no losses on held to maturity securities at December 31, 2019.



(Dollars in thousands)	Less than 12 Months					12 Months or More					Total
December 31, 2019	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Available for sale:
State and municipal securities	$	6,996	$	(35	)	$	—	$	—		$	6,996	$	(35	)
U.S. government and agency securities	—		—			663		(8		)	663		(8		)
Residential mortgage-backed securities	29,184		(151		)	14,917		(98		)	44,101		(249		)
Residential collateralized mortgage obligations	20,266		(118		)	24,275		(206		)	44,541		(324		)
Total	$	56,446	$	(304	)	$	39,855	$	(312	)	$	96,301	$	(616	)

December 31, 2018
Available for sale:
State and municipal securities	$	13,101	$	(50	)	$	8,463	$	(113	)	$	21,564	$	(163	)
Corporate bonds	7,932		(65		)	—		—			7,932		(65		)
U.S. government and agency securities	56,271		(54		)	—		—			56,271		(54		)
Residential mortgage-backed securities	18,836		(65		)	77,471		(2,095		)	96,307		(2,160		)
Residential collateralized mortgage obligations	14,711		(79		)	120,601		(3,162		)	135,312		(3,241		)
Total	$	110,851	$	(313	)	$	206,535	$	(5,370	)	$	317,386	$	(5,683	)
Held to maturity:
State and municipal securities	$	13,921	$	(33	)	$	—	$	—		$	13,921	$	(33	)

At December 31, 2019, the Company had 54 individual securities with unrealized losses. The unrealized losses for each of the securities relate to market interest rate changes. The Company has considered the current market for the securities in an unrealized loss position, as well as the severity and duration of the impairments, and expects that the value will recover. Management does not intend to sell these investments until the fair value exceeds amortized cost and it is more likely than not that the Company will not be required to sell debt securities before the anticipated recovery of the amortized cost basis of the security; thus, the impairment is determined not to be other-than-temporary.

Proceeds from sales of securities available for sale and gross gains for the years ended December 31, 2019 and 2018. There were no security sales during the year ended December 31, 2017.



	December 31,
(Dollars in thousands)	2019			2018
Proceeds from sales	$	27,766		$	20,877
Gross realized gains	161			381
Gross realized losses	(141		)	(389		)
Tax expense (benefit) related to securities gains/losses	4			(2		)

The following table presents the amortized cost and fair value of securities available for sale and held to maturity at December 31, 2019, grouped by contractual maturity. Mortgage-backed securities and collateralized mortgage obligations, which do not have contractual payments due at a single maturity date, are shown separately. Actual maturities for mortgage-backed securities and collateralized mortgage obligations will differ from contractual maturities as a result of prepayments made on the underlying mortgages.



(Dollars in thousands)	Held to Maturity				Available for Sale
December 31, 2019	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	—	$	—	$	3,998	$	4,020
Due after one year through five years	13,415		13,498		46,610		48,698
Due after five years through ten years	15,205		16,025		50,419		52,176
Due after ten years	—		—		16,253		16,345
Commercial mortgage-backed securities	—		—		11,882		12,144
Residential mortgage-backed securities	—		—		204,650		207,506
Commercial collateralized mortgage obligations	—		—		4,321		4,394
Residential collateralized mortgage obligations	—		—		154,925		155,787
Total	$	28,620	$	29,523	$	493,058	$	501,070

The following table presents carrying amounts of securities pledged as collateral for deposits and repurchase agreements for the period ends presented.



	December 31,
(Dollars in thousands)	2019		2018
Carrying value of securities pledged to secure public deposits	$	285,552	$	364,055
Carrying value of securities pledged to repurchase agreements	20,356		48,847

Loans

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Loans

Note 4 - Loans

Loans consist of the following:



	December 31,
(Dollars in thousands)	2019		2018
Loans held for sale	$	64,837	$	52,210
Loans held for investment:
Loans secured by real estate:
Commercial real estate	$	1,296,847	$	1,228,402
Construction/land/land development	517,688		429,660
Residential real estate	689,555		629,714
Total real estate	2,504,090		2,287,776
Commercial and industrial	1,343,475		1,272,566
Mortgage warehouse lines of credit	274,659		207,871
Consumer	20,971		20,892
Total loans held for investment⁽¹⁾	4,143,195		3,789,105
Less: Allowance for loan losses	37,520		34,203
Net loans held for investment	$	4,105,675	$	3,754,902

____________________________


⁽¹⁾	Includes net deferred loan fees of $3.6 million and $3.2 million at December 31, 2019 and 2018, respectively.

Included in total loans held for investment were $17.7 million and $18.6 million of commercial real estate loans for which the fair value option was elected as of December 31, 2019 and 2018, respectively. The Company mitigates the interest rate component of fair value risk on loans at fair value by entering into derivative interest rate contracts. See Note 5 - Fair Value of Financial Instruments for more information on loans for which the fair value option has been elected.

Credit quality indicators. As part of the Company's commitment to manage the credit quality of its loan portfolio, management annually updates and evaluates certain credit quality indicators, which include but are not limited to (i) weighted-average risk rating of the loan portfolio, (ii) net charge-offs, (iii) level of non-performing loans, (iv) level of classified loans, and (v) the general economic conditions in the states in which the Company operates. The Company maintains an internal risk rating system where ratings are assigned to individual loans based on assessed risk. Loan risk ratings are the primary indicator of credit quality for the loan portfolio and are continually evaluated to ensure they are appropriate based on currently available information.

The following is a summary description of the Company's internal risk ratings:



• Pass (1-6)	Loans within this risk rating are further categorized as follows:
Minimal risk (1)	Well-collateralized by cash equivalent instruments held by the Bank.
Moderate risk (2)	Borrowers with excellent asset quality and liquidity. Borrowers' capitalization and liquidity exceed industry norms. Borrowers in this category have significant levels of liquid assets and have a low level of leverage.
Better than average risk (3)	Borrowers with strong financial strength and excellent liquidity that consistently demonstrate strong operating performance. Borrowers in this category generally have a sizable net worth that can be converted into liquid assets within 12 months.
Average risk (4)	Borrowers with sound credit quality and financial performance, including liquidity. Borrowers are supported by sufficient cash flow coverage generated through operations across the full business cycle.
Marginally acceptable risk (5)	Loans generally meet minimum requirements for an acceptable loan in accordance with lending policy, but possess one or more attributes that cause the overall risk profile to be higher than the majority of newly approved loans.
Watch (6)	A passing loan with one or more factors that identify a potential weakness in the overall ability of the borrower to repay the loan. These weaknesses are generally mitigated by other factors that reduce the risk of delinquency or loss.
• Special Mention (7)	This grade is intended to be temporary and includes borrowers whose credit quality have deteriorated and is at risk of further decline.
• Substandard (8)	This grade includes "Substandard" loans under regulatory guidelines. Substandard loans exhibit a well-defined weakness that jeopardizes debt repayment in accordance with contractual agreements, even though the loan may be performing. These obligations are characterized by the distinct possibility that a loss may be incurred if these weaknesses are not corrected and repayment may be dependent upon collateral liquidation or secondary source of repayment.
• Doubtful (9)	This grade includes "Doubtful" loans under regulatory guidelines. Such loans are placed on nonaccrual status and repayment may be dependent upon collateral with no readily determinable valuation or valuations that are highly subjective in nature. Repayment for these loans is considered improbable based on currently existing facts and circumstances.
• Loss (0)	This grade includes "Loss" loans under regulatory guidelines. Loss loans are charged-off or written down when repayment is not expected.

Loans held for investment by credit quality indicator at December 31, 2019 and 2018, were as follows:



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	Pass		Special Mention		Substandard		Doubtful		Loss		Total
Commercial real estate	$	1,269,493	$	12,479	$	14,875	$	—	$	—	$	1,296,847
Construction/land/land development	512,901		149		4,638		—		—		517,688
Residential real estate	680,046		1,558		7,951		—		—		689,555
Total real estate	2,462,440		14,186		27,464		—		—		2,504,090
Commercial and industrial	1,277,564		28,478		37,433		—		—		1,343,475
Mortgage warehouse lines of credit	274,659		—		—		—		—		274,659
Consumer	20,808		—		163		—		—		20,971
Total loans held for investment	$	4,035,471	$	42,664	$	65,060	$	—	$	—	$	4,143,195



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	Pass		Special Mention		Substandard		Doubtful		Loss		Total
Commercial real estate	$	1,206,194	$	3,101	$	19,107	$	—	$	—	$	1,228,402
Construction/land/land development	426,770		157		2,733		—		—		429,660
Residential real estate	617,996		1,142		10,576		—		—		629,714
Total real estate	2,250,960		4,400		32,416		—		—		2,287,776
Commercial and industrial	1,190,718		34,964		46,884		—		—		1,272,566
Mortgage warehouse lines of credit	207,871		—		—		—		—		207,871
Consumer	20,712		—		180		—		—		20,892
Total loans held for investment	$	3,670,261	$	39,364	$	79,480	$	—	$	—	$	3,789,105

The following tables present the Company's loan portfolio aging analysis at the dates indicated:



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	30-59 Days Past Due		60-89 Days Past Due		Loans Past Due 90 Days or More		Total Past Due		Current Loans		Total Loans Receivable		Accruing Loans 90 or More Days Past Due
Commercial real estate	$	917	$	—	$	5,891	$	6,808	$	1,290,039	$	1,296,847	$	—
Construction/land/land development	3,569		133		56		3,758		513,930		517,688		—
Residential real estate	2,174		1,918		913		5,005		684,550		689,555		—
Total real estate	6,660		2,051		6,860		15,571		2,488,519		2,504,090		—
Commercial and industrial	1,588		1,037		11,545		14,170		1,329,305		1,343,475		—
Mortgage warehouse lines of credit	—		—		—		—		274,659		274,659		—
Consumer	164		35		40		239		20,732		20,971		—
Total loans held for investment	$	8,412	$	3,123	$	18,445	$	29,980	$	4,113,215	$	4,143,195	$	—



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	30-59 Days Past Due		60-89 Days Past Due		Loans Past Due 90 Days or More		Total Past Due		Current Loans		Total Loans Receivable		Accruing Loans 90 or More Days Past Due
Commercial real estate	$	458	$	1,409	$	7,224	$	9,091	$	1,219,311	$	1,228,402	$	—
Construction/land/land development	2,657		—		435		3,092		426,568		429,660		—
Residential real estate	2,137		527		4,149		6,813		622,901		629,714		—
Total real estate	5,252		1,936		11,808		18,996		2,268,780		2,287,776		—
Commercial and industrial	276		8,263		6,157		14,696		1,257,870		1,272,566		—
Mortgage warehouse lines of credit	—		—		—		—		207,871		207,871		—
Consumer	383		8		2		393		20,499		20,892		—
Total loans held for investment	$	5,911	$	10,207	$	17,967	$	34,085	$	3,755,020	$	3,789,105	$	—

The following tables detail activity in the allowance for loan losses by portfolio segment. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories.



(Dollars in thousands)	Year Ended December 31, 2019
Loans secured by real estate:	Beginning Balance		Charge-offs		Recoveries		Provision (Benefit)⁽¹⁾			Ending Balance
Commercial real estate	$	8,999	$	1,420	$	341	$	2,093		$	10,013
Construction/land/land development	3,331		38		40		378			3,711
Residential real estate	5,705		265		185		707			6,332
Commercial and industrial	15,616		8,231		3,627		5,948			16,960
Mortgage warehouse lines of credit	316		29		—		(25		)	262
Consumer	236		148		48		106			242
Total	$	34,203	$	10,131	$	4,241	$	9,207		$	37,520

____________________________


⁽¹⁾	The $9.6 provision for credit losses on the consolidated statements of income includes a $9.2 million net loan loss provision and a $361,000 provision for off-balance sheet commitments for the year ended December 31, 2019.



(Dollars in thousands)	Year Ended December 31, 2018
Loans secured by real estate:	Beginning Balance		Charge-offs		Recoveries		Provision (Benefit)⁽¹⁾			Ending Balance
Commercial real estate	$	8,998	$	1,300	$	226	$	1,075		$	8,999
Construction/land/land development	2,950		228		6		603			3,331
Residential real estate	5,807		407		133		172			5,705
Commercial and industrial	18,831		5,068		2,206		(353		)	15,616
Mortgage warehouse lines of credit	214		—		—		102			316
Consumer	283		121		92		(18		)	236
Total	$	37,083	$	7,124	$	2,663	$	1,581		$	34,203

____________________________


⁽¹⁾	The $1.0 million provision for credit losses on the consolidated statements of income includes a $1.6 million net loan loss provision and an $567,000 release of provision for off-balance sheet commitments for the year ended December 31, 2018.



(Dollars in thousands)	Year Ended December 31, 2017
Loans secured by real estate:	Beginning Balance		Charge-offs		Recoveries		Provision⁽¹⁾		Ending Balance
Commercial real estate	$	8,718	$	463	$	93	$	650	$	8,998
Construction/land/land development	2,805		3		5		143		2,950
Residential real estate	5,003		1,446		125		2,125		5,807
Commercial and industrial	33,590		21,767		1,918		5,090		18,831
Mortgage warehouse lines of credit	139		—		—		75		214
Consumer	276		198		69		136		283
Total	$	50,531	$	23,877	$	2,210	$	8,219	$	37,083

____________________________


⁽¹⁾	The $8.3 million provision for credit losses on the consolidated statements of income includes a $8.2 million loan loss provision and a $117,000 provision for off-balance sheet commitments for the year ended December 31, 2017.

The following tables present the balance of loans receivable by method of impairment evaluation at the dates indicated:



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	Period End Allowance Allocated to Loans Individually Evaluated for Impairment		Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		Period End Loan Balance Individually Evaluated for Impairment		Period End Loan Balance Collectively Evaluated for Impairment ⁽¹⁾
Commercial real estate	$	3	$	10,010	$	7,446	$	1,271,731
Construction/land/land development	3		3,708		4,329		513,359
Residential real estate	21		6,311		4,937		684,618
Commercial and industrial	168		16,792		15,662		1,327,813
Mortgage warehouse lines of credit	—		262		—		274,659
Consumer	4		238		100		20,871
Total	$	199	$	37,321	$	32,474	$	4,093,051

____________________________


⁽¹⁾	Excludes $17.7 million of commercial real estate loans at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information.



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	Period End Allowance Allocated to Loans Individually Evaluated for Impairment		Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		Period End Loan Balance Individually Evaluated for Impairment		Period End Loan Balance Collectively Evaluated for Impairment ⁽¹⁾
Commercial real estate	$	5	$	8,994	$	8,773	$	1,201,058
Construction/land/land development	19		3,312		1,017		428,643
Residential real estate	68		5,637		6,876		622,838
Commercial and industrial	255		15,361		16,428		1,256,138
Mortgage warehouse lines of credit	—		316		—		207,871
Consumer	19		217		184		20,708
Total	$	366	$	33,837	$	33,278	$	3,737,256

____________________________


⁽¹⁾	Excludes $18.6 million of commercial real estate loans at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information.

The following tables present impaired loans at the dates indicated. No mortgage warehouse lines of credit were impaired at either December 31, 2019 or 2018.



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	Unpaid Contractual Principal Balance		Recorded Investment with no Allowance		Recorded Investment with an Allowance		Total Recorded Investment		Allocation of Allowance for Loan Losses
Commercial real estate	$	10,788	$	7,375	$	71	$	7,446	$	3
Construction/land/land development	4,692		4,256		73		4,329		3
Residential real estate	5,846		4,407		530		4,937		21
Total real estate	21,326		16,038		674		16,712		27
Commercial and industrial	22,857		14,385		1,277		15,662		168
Consumer	110		—		100		100		4
Total impaired loans	$	44,293	$	30,423	$	2,051	$	32,474	$	199



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	Unpaid Contractual Principal Balance		Recorded Investment with no Allowance		Recorded Investment with an Allowance		Total Recorded Investment		Allocation of Allowance for Loan Losses
Commercial real estate	$	10,894	$	8,725	$	48	$	8,773	$	5
Construction/land/land development	1,329		838		179		1,017		19
Residential real estate	7,815		6,092		784		6,876		68
Total real estate	20,038		15,655		1,011		16,666		92
Commercial and industrial	18,883		15,806		622		16,428		255
Consumer	202		—		184		184		19
Total impaired loans	$	39,123	$	31,461	$	1,817	$	33,278	$	366

The average recorded investment and interest income recognized on impaired loans while classified as impaired for the years ended December 31, 2019, 2018 and 2017, were as follows:



	Years Ended December 31,
(Dollars in thousands)	2019				2018				2017
Loans secured by real estate:	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Commercial real estate	$	8,842	$	21	$	9,901	$	67	$	7,046	$	165
Construction/land/land development	1,266		8		1,401		16		1,053		10
Residential real estate	5,090		22		7,529		60		9,398		75
Total real estate	15,198		51		18,831		143		17,497		250
Commercial and industrial	16,449		49		14,814		199		40,316		375
Consumer	150		3		251		5		244		7
Total impaired loans	$	31,797	$	103	$	33,896	$	347	$	58,057	$	632

All interest accrued but not received for loans placed on nonaccrual status is reversed against interest income. Subsequent receipts on nonaccrual loans are recorded as a reduction of principal, and interest income is recorded only after principal recovery is reasonably assured. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. TDRs are included in certain loan categories within impaired loans. At December 31, 2019, there were no unfunded commitments to advance on impaired loans.

Non-performing (nonaccrual) loans held for investment were as follows:



(Dollars in thousands)	December 31,
Loans secured by real estate:	2019		2018
Commercial real estate	$	6,994	$	8,281
Construction/land/land development	4,337		935
Residential real estate	5,132		6,668
Total real estate	16,463		15,884
Commercial and industrial	14,520		15,792
Consumer	163		180
Total nonaccrual loans	$	31,146	$	31,856

For the years ended December 31, 2019, 2018 and 2017, gross interest income that would have been recorded had the nonaccruing loans been current in accordance with their original terms was $1.5 million, $1.4 million and $1.3 million, respectively. No interest income was recorded on these loans while they were considered nonaccrual during the years ended December 31, 2019, 2018 or 2017.

The Company elects the fair value option for recording residential mortgage loans held for sale, as well as certain commercial real estate in accordance with U.S. GAAP. The Company had $927,000 of nonaccrual mortgage loans held for sale that were recorded using the fair value option election at December 31, 2019, and $741,000 at December 31, 2018. There were no nonaccrual loans held for investment that were recorded using the fair value option election at December 31, 2019, or December 31, 2018.

The following is a summary of loans classified as TDRs.



(Dollars in thousands)	December 31,
TDRs	2019		2018
Nonaccrual TDRs	$	6,609	$	5,793
Performing TDRs	1,843		2,054
Total	$	8,452	$	7,847

The following tables present the pre-modification balance of TDR modifications that occurred during the periods indicated and the ending balances by concession type as of each period presented.



(Dollars in thousands)	Year Ended December 31, 2019
Loans secured by real estate:	Number of Loans Restructured	Pre-Modification Recorded Balance		Term Concessions		Interest Rate Concessions		Combination		Total Modifications
Construction/land/land development	1	$	361	$	—	$	—	$	343	$	343
Residential real estate	2	2,516		—		—		2,410		2,410
Total real estate	3	2,877		—		—		2,753		2,753
Commercial and industrial	5	1,314		852		—		—		852
Consumer	1	11		9		—		—		9
Total	9	$	4,202	$	861	$	—	$	2,753	$	3,614



(Dollars in thousands)	Year Ended December 31, 2018
Loans secured by real estate:	Number of Loans Restructured	Pre-Modification Recorded Balance		Term Concessions		Interest Rate Concessions		Combination		Total Modifications
Commercial real estate	1	$	252	$	150	$	—	$	—	$	150
Residential real estate	6	428		48		19		331		398
Total real estate	7	680		198		19		331		548
Commercial and industrial	3	198		180		—		14		194
Consumer	1	33		—		—		29		29
Total	11	$	911	$	378	$	19	$	374	$	771



(Dollars in thousands)	Year Ended December 31, 2017
Loans secured by real estate:	Number of Loans Restructured	Pre-Modification Recorded Balance		Term Concessions		Interest Rate Concessions		Combination		Total Modifications
Commercial real estate	4	$	2,071	$	2,057	$	—	$	—	$	2,057
Residential real estate	3	133		38		—		210		248
Total real estate	7	2,204		2,095		—		210		2,305
Commercial and industrial	8	10,799		9,882		—		40		9,922
Consumer	1	49		45		—		—		45
Total	16	$	13,052	$	12,022	$	—	$	250	$	12,272

During the year ended December 31, 2019, two loans with a combined outstanding principal balance of $117,000 defaulted after having been modified as a TDR within the previous 12 months. During the year ended December 31, 2018, no loans defaulted after having been modified as a TDR within the previous 12 months. During the year ended December 31, 2017, one loan with an outstanding principal balance of $241,000 defaulted after having been modified as a TDR within the previous 12 months. A payment default is defined as a loan that was 90 or more days past due. The modifications made during the year ended December 31, 2019, did not significantly impact the Company's determination of the allowance for loan losses. The Company monitors the performance of the modified loans to their restructured terms on an ongoing basis. In the event of a subsequent default, the allowance for loan losses continues to be reassessed on the basis of an individual evaluation of each loan.

Fair Value of Financial Instruments

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

Note 5 - Fair Value of Financial Instruments

Fair value is the exchange price that is expected to be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Certain assets and liabilities are recorded in the Company's consolidated financial statements at fair value. Some are recorded on a recurring basis and some on a non-recurring basis.

The Company utilizes fair value measurement to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, the Company utilizes valuation techniques that are consistent with the market approach, the income approach and/or the cost approach to estimate the fair values of its financial instruments. Such valuation techniques are consistently applied.

A hierarchy for fair value has been established which categorizes the valuation techniques into three levels used to measure fair value. The three levels are as follows:

Level 1 - Fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities.

Level 2 - Fair value is based on significant other observable inputs that are generally determined based on a single price for each financial instrument provided to the Company by an unrelated third-party pricing service and is based on one or more of the following:

•Quoted prices for similar, but not identical, assets or liabilities in active markets;

•Quoted prices for identical or similar assets or liabilities in markets that are not active;


•	Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates;

•Other inputs derived from or corroborated by observable market inputs.

Level 3 - Prices or valuation techniques that require inputs that are both significant and unobservable in the market. These instruments are valued using the best information available, some of which is internally developed, and reflects the Company's own assumptions about the risk premiums that market participants would generally require and the assumptions they would use.

There were no transfers between fair value reporting levels for any period presented.

Fair Values of Assets and Liabilities Recorded on a Recurring Basis

The following tables summarize financial assets and financial liabilities recorded at fair value on a recurring basis at December 31, 2019 and 2018, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value. There were no changes in the valuation techniques during 2019 or 2018.



	December 31, 2019
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
State and municipal securities	$	—	$	61,011		$	38,173	$	99,184
Corporate bonds	—		16,817			—		16,817
U.S. government agency securities	—		5,238			—		5,238
Commercial mortgage-backed securities	—		12,144			—		12,144
Residential mortgage-backed securities	—		207,506			—		207,506
Commercial collateralized mortgage obligations	—		4,394			—		4,394
Residential collateralized mortgage obligations	—		155,787			—		155,787
Securities available for sale	—		462,897			38,173		501,070
Securities carried at fair value through income	—		—			11,513		11,513
Loans held for sale	—		36,977			—		36,977
Loans at fair value	—		—			17,670		17,670
Mortgage servicing rights	—		—			20,697		20,697
Other assets - derivatives	—		9,384			—		9,384
Total recurring fair value measurements - assets	$	—	$	509,258		$	88,053	$	597,311

Other liabilities - derivatives	$	—	$	(9,488	)	$	—	$	(9,488	)
Total recurring fair value measurements - liabilities	$	—	$	(9,488	)	$	—	$	(9,488	)



	December 31, 2018
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
State and municipal securities	$	—	$	61,522		$	39,361	$	100,883
Corporate bonds	—		11,034			—		11,034
U.S. treasury securities	55,515		—			—		55,515
U.S. government agency securities	—		5,635			—		5,635
Commercial mortgage-backed securities	—		16,766			—		16,766
Residential mortgage-backed securities	—		186,315			—		186,315
Residential collateralized mortgage obligations	—		199,496			—		199,496
Securities available for sale	55,515		480,768			39,361		575,644
Securities carried at fair value through income	—		—			11,361		11,361
Loans held for sale	—		21,562			—		21,562
Loans at fair value	—		—			18,571		18,571
Mortgage servicing rights	—		—			25,114		25,114
Other assets - derivatives	—		3,563			—		3,563
Total recurring fair value measurements - assets	$	55,515	$	505,893		$	94,407	$	655,815

Other liabilities - derivatives	$	—	$	(2,846	)	$	—	$	(2,846	)
Total recurring fair value measurements - liabilities	$	—	$	(2,846	)	$	—	$	(2,846	)

The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2019 and 2018, are summarized as follows:



(Dollars in thousands)	Loans at Fair Value			MSRs			Securities Available for Sale			Securities at Fair Value Through Income
Balance at January 1, 2019	$	18,571		$	25,114		$	39,361		$	11,361
Gain (loss) recognized in earnings:
Mortgage banking revenue⁽¹⁾	—			(7,012		)	—			—
Other noninterest income	124			—			—			586
Gain (loss) recognized in AOCI	—			—			1,673			—
Purchases, issuances, sales and settlements:
Originations	—			2,595			—			—
Sales	—			—			(2,861		)	—
Settlements	(1,025		)	—			—			(434		)
Balance at December 31, 2019	$	17,670		$	20,697		$	38,173		$	11,513

Balance at January 1, 2018	$	26,611		$	24,182		$	42,015		$	12,033
Losses recognized in earnings:
Mortgage banking revenue⁽¹⁾	—			(963		)	—			—
Other noninterest income	(389		)	—			—			(258		)
Loss recognized in AOCI	—			—			(597		)	—
Purchases, issuances, sales, and settlements:
Originations	—			1,895			—			—
Purchases	—			—			259			—
Settlements	(7,651		)	—			(2,316		)	(414		)
Balance at December 31, 2018	$	18,571		$	25,114		$	39,361		$	11,361

____________________________


⁽¹⁾	Mortgage banking revenue includes changes in fair value due to market changes and run-off.

The following methodologies were used to measure the fair value of financial assets and liabilities valued on a recurring basis:

Securities Available for Sale

Securities classified as available for sale are reported at fair value utilizing Level 1, Level 2 or Level 3 inputs. For Level 2 securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, market consensus prepayment speeds, credit information and the security's terms and conditions, among other things. In order to ensure the fair values are consistent with Accounting Standards Codification ("ASC") 820, Fair Value Measurements and Disclosures, the Company periodically checks the fair value by comparing them to another pricing source, such as Bloomberg LP. The third-party pricing service is subject to an annual review of internal controls in accordance with the Statement on Standards for Attestation Engagements No. 16, which was made available to the Company. In certain cases where Level 2 inputs are not available, securities are classified within Level 3 of the hierarchy.

Mortgage Servicing Rights ("MSR")

The carrying amounts of the MSRs equal fair value and are valued using a discounted cash flow valuation technique. The significant assumptions used to value MSRs were as follows:



	December 31,
	2019		2018
Prepayment speed	12.46	%	9.90	%
Discount rate	9.55		10.42

In recent years, there have been significant market-driven fluctuations in the assumptions listed above. These fluctuations can be rapid and may continue to be significant. Therefore, estimating these assumptions within ranges that market participants would use in determining the fair value of MSRs requires significant management judgment.

Derivatives

Fair values for interest rate swap agreements are based upon the amounts that would be required to settle the contracts. Fair values for derivative loan commitments and forward loan sale commitments are based on fair values of the underlying mortgage loans and the probability of such commitments being exercised. Significant management judgment and estimation is required in determining these fair value measurements.

Fair Values of Assets Recorded on a Recurring Basis for which the Fair Value Option has been Elected

Certain assets are measured at fair value on a recurring basis due to the Company's election to adopt fair value accounting treatment for those assets. This election allows for a more effective offset of the changes in fair values of the assets and the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting under ASC 815, Derivatives and Hedging. For assets for which the fair value has been elected, the earned current contractual interest payment is recognized in interest income, loan origination costs and fees on fair value option loans are recognized in earnings as incurred and not deferred. At December 31, 2019 and 2018, there were no gains or losses recorded attributable to changes in instrument-specific credit risk. The following tables summarize the difference between the fair value and the unpaid principal balance for financial instruments for which the fair value option has been elected:



	December 31, 2019
(Dollars in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal Balance		Difference
Loans held for sale⁽¹⁾	$	36,977	$	36,037	$	940
Commercial real estate loans held for investment⁽²⁾	17,670		17,366		304
Securities carried at fair value through income	11,513		11,070		443
Total	$	66,160	$	64,473	$	1,687

____________________________


⁽¹⁾	A total of $927,000 of loans held for sale were designated as nonaccrual or 90 days or more past due at December 31, 2019. Of this balance, the Company had guarantees receivable from U.S. Government agencies totaling $709,000.


⁽²⁾	There were no commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or 90 days or more past due at December 31, 2019.



	December 31, 2018
(Dollars in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal Balance		Difference
Loans held for sale⁽¹⁾	$	21,562	$	21,173	$	389
Commercial real estate loans held for investment⁽²⁾	18,571		18,391		180
Securities carried at fair value through income	11,361		11,503		(142		)
Total	$	51,494	$	51,067	$	427

____________________________


⁽¹⁾	A total of $741,000 of loans held for sale were designated as nonaccrual or 90 days or more past due at December 31, 2018. Of this balance, the Company had guarantees receivable from U.S. government agencies totaling $582,000.


⁽²⁾	There were no commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or 90 days or more past due at December 31, 2018.

Changes in the fair value of assets for which the Company elected the fair value option are classified in the consolidated statement of income line items reflected in the following table:



(Dollars in thousands)	Years Ended December 31,
Changes in fair value included in noninterest income:	2019		2018			2017
Mortgage banking revenue	$	550	$	(163	)	$	477
Other income:
Loans at fair value held for investment	124		(389		)	(712		)
Securities carried at fair value through income	586		(258		)	(97		)
Total impact on other income	710		(647		)	(809		)
Total fair value option impact on noninterest income⁽¹⁾	$	1,260	$	(810	)	$	(332	)

____________________________


⁽¹⁾	The fair value option impact on noninterest income is offset by the derivative gain/loss recognized in noninterest income. Please see Note 9 - Mortgage Banking for more detail.

The following methodologies were used to measure the fair value of financial assets valued on a recurring basis for which the fair value option was elected:

Securities at Fair Value through Income

Securities carried at fair value through income are valued using a discounted cash flow with a credit spread applied to each instrument based on the credit worthiness of each issuer. Credit spreads ranged from 83 to 227 basis points at both December 31, 2019 and 2018. The Company believes the fair value approximates an exit price.

Loans Held for Sale

Fair values for loans held for sale are established using anticipated sale prices for loans allocated to a sale commitment, and those unallocated to a commitment are valued based on the interest rate and term for similar loans allocated. The Company believes the fair value approximates an exit price.

Loans Held for Investment

For loans held for investment for which the fair value option has been elected, fair values are calculated using a discounted cash flow model with inputs including observable interest rate curves and unobservable credit adjustment spreads based on credit risk inherent in the loan. Credit spreads ranged from 290 to 413 basis points at December 31, 2019, and ranged from 290 to 413 basis points at December 31, 2018. The Company believes the fair value approximates an exit price.

Fair Value of Assets Recorded on a Nonrecurring Basis

Equity Securities without Readily Determinable Fair Values

Equity securities without readily determinable fair values totaled $39.8 million at December 31, 2019, and are shown on the face of the consolidated balance sheets. The majority of the Company's equity investments qualify for the practical expedient allowed for equity securities without a readily determinable fair value, such that the Company has elected to carry these securities at cost adjusted for any observable transactions during the period, less any impairment. To date, no impairment has been recorded on the Company's investments in equity securities that do not have readily determinable fair values.

Government National Mortgage Association Repurchase Asset

The Company recorded $27.9 million and $30.6 million, respectively, at December 31, 2019 and 2018, for Government National Mortgage Association ("GNMA") repurchase assets included in mortgage loans held for sale on the consolidated balance sheets. The assets are valued at the lower of cost or market and, where market is lower than cost, valued using anticipated sale prices for loans allocated to a sale commitment, and those unallocated to a commitment are valued based on the interest rate and term for similar loans allocated. The Company believes the fair value approximates an exit price. Please see Note 9 - Mortgage Banking for more information on the GNMA repurchase asset.

Collateral Dependent Impaired Loans

Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms are measured for impairment. Allowable methods for determining the amount of impairment include estimating fair value using the fair value of the collateral for collateral-dependent loans. If the impaired loan is identified as collateral-dependent, the fair value method of measuring the amount of impairment is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Impaired loans that are collateral-dependent are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method. The fair value of impaired loans with specific allocated losses was $1.9 million and $1.4 million at December 31, 2019 and 2018, respectively.

Non-Financial Assets

Foreclosed assets held for sale are the only non-financial assets valued on a non-recurring basis that are initially recorded by the Company at fair value, less estimated costs to sell. At foreclosure, if the fair value, less estimated costs to sell, of the real estate acquired is less than the Company's recorded investment in the related loan, a write-down is recognized through a charge to the allowance for loan losses. Additionally, valuations are periodically performed by management and any subsequent reduction in value is recognized by a charge to income. The carrying value and fair value of foreclosed assets held for sale is estimated using Level 3 inputs based on observable market data and was $4.7 million and $3.7 million at December 31, 2019 and 2018, respectively. At December 31, 2019, the Company had $786,000 in residential mortgage loans in the process of foreclosure.

Fair Values of Financial Instruments Not Recorded at Fair Value

The carrying value and estimated fair values of financial instruments not recorded at fair value are as follows:



(Dollars in thousands)	December 31,
Financial assets:	2019				2018
Level 1 inputs:	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Cash and cash equivalents	$	291,518	$	291,518	$	116,678	$	116,678
Level 2 inputs:
Non-marketable equity securities held in other financial institutions	39,808		39,808		42,149		42,149
Accrued interest and loan fees receivable	16,430		16,430		16,454		16,454
Level 3 inputs:
Securities held to maturity	28,620		29,523		19,169		19,136
Loans held for investment, net⁽¹⁾	4,088,005		3,940,347		3,736,331		3,605,142
Financial liabilities:
Level 2 inputs:
Deposits	4,228,612		4,081,430		3,783,138		3,537,283
FHLB advances and other borrowings	417,190		425,318		445,224		444,286
Junior subordinated debentures	9,671		10,717		9,644		10,723
Accrued interest payable	2,822		2,822		2,679		2,679

____________________________

⁽¹⁾

Loans held for investment, net does not include loans for which the fair value option had been elected at December 31, 2019 or 2018, as these loans are carried at fair value on a recurring basis.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Premises and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Premises and Equipment

Note 6 - Premises and Equipment

Major classifications of premises and equipment are summarized below:



	December 31,
(Dollars in thousands)	2019			2018
Land, buildings and improvements	$	83,161		$	82,114
Furniture, fixtures and equipment	27,911			24,946
Leasehold improvements	15,790			11,345
Construction in process	407			1,715
	127,269			120,120
Accumulated depreciation	(46,812		)	(45,106		)
Total	$	80,457		$	75,014

Depreciation expense for premises and equipment totaled $5.4 million, $4.9 million and $5.3 million for the years ended December 31, 2019, 2018 and 2017, respectively.

Leases (Notes)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Leases

Note 7 - Leases

The Company leases certain real estate, as well as certain equipment, under non-cancelable operating leases that expire at various dates through 2038.

The balance sheet details and components of the Company's lease expense were as follows:



(Dollars in thousands)	December 31, 2019
Operating lease right of use assets (included in Accrued interest receivable and other assets)	$	24,013
Operating lease liabilities (included in Accrued expenses and other liabilities)	25,810
Finance lease liabilities (included in Accrued expenses and other liabilities)	248

Weighted average remaining lease term (years) - operating leases	9.58
Weighted average discount rate - operating leases	3.49		%



(Dollars in thousands)	Year Ended December 31, 2019
Lease expense:
Operating lease expense	$	4,716
Other lease expense	245
Total lease expense	$	4,961
Right of use assets obtained in exchange for new operating lease liabilities	$	1,256

Total lease expense was $4.4 million and $4.2 million for the year ended December 31, 2018 and 2017. Maturities of operating lease liabilities at December 31, 2019, were as follows:



	December 31, 2019
Year 1	$	4,703
Year 2	4,079
Year 3	3,826
Year 4	3,402
Year 5	2,349
Year 6 and thereafter	12,513
Total lease payments	30,872
Less: Imputed interest	5,062
Total lease obligations	$	25,810

The Company had one sale-leaseback transaction from 2017 that resulted in a loss on sale. The loss was previously deferred and was being amortized to lease expense over the term of the lease. Upon the Company's adoption of ASU 2016-02, the deferred loss of $962,000 was combined with the ROU asset.

Supplemental cash flow related to leases was as follows:



	Year Ended December 31, 2019
Cash paid for operating leases	$	4,796

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Note 8 - Goodwill and Other Intangible Assets

There were no changes to the carrying amount of the Company's goodwill during the year ended December 31, 2019. During 2018, the Company recorded goodwill totaling $4.5 million and other intangible assets totaling $4.9 million in connection with the Reeves, Coon & Funderburg acquisition.

The components of the Company's goodwill and other intangible assets are as follows:



(Dollars in thousands) December 31, 2019	Gross		Accumulated Amortization			Net
Goodwill	$	26,741	$	—		$	26,741
Other intangible assets:
Core deposit intangibles	1,260		(1,091		)	169
Relationship based intangibles	7,304		(2,781		)	4,523
Tradename	186		(124		)	62
Non-compete	270		(225		)	45
Total	$	35,761	$	(4,221	)	$	31,540
December 31, 2018
Goodwill	$	26,741	$	—		$	26,741
Other intangible assets:
Core deposit intangibles	1,260		(945		)	315
Relationship based intangibles	7,304		(1,819		)	5,485
Tradename	186		(46		)	140
Non-compete	270		(90		)	180
Total	$	35,761	$	(2,900	)	$	32,861

Amortization expense on other intangible assets totaled $1.3 million, $961,000 and $518,000 for the years ended December 31, 2019, 2018 and 2017, respectively, and was included as a component of other noninterest expense in the consolidated statements of income.

Estimated future amortization expense for intangible assets remaining at December 31, 2019, was as follows:



(Dollars in thousands) Years Ended December 31,
2020	$	1,060
2021	844
2022	689
2023	582
2024	488
Thereafter	1,136
Total	$	4,799

Mortgage Banking

12 Months Ended

Dec. 31, 2019

Mortgage Banking [Abstract]

Mortgage Banking

Note 9 - Mortgage Banking

The following table presents the Company's revenue from mortgage banking operations:



(Dollars in thousands)	Years Ended December 31,
Mortgage banking revenue	2019			2018			2017
Origination	$	1,000		$	854		$	1,281
Gain on sale of loans held for sale	6,943			6,403			11,615
Servicing	6,547			7,081			7,872
Total gross mortgage revenue	14,490			14,338			20,768
Mortgage derivatives gain (loss)	979			(725		)	(205		)
MSR change due to payoffs and paydowns	(4,087		)	(3,618		)	(4,005		)
MSR and hedge fair value adjustment	927			(400		)	(249		)
Gain (loss) on MSR sale⁽¹⁾	—			25			(503		)
Mortgage banking revenue	$	12,309		$	9,620		$	15,806

____________________________


⁽¹⁾	Amount shown during the year ended December 31, 2018, reflects final settlement on a loan servicing portfolio sold during the year ended December 31, 2017.

Management uses mortgage-backed securities to mitigate the impact of changes in fair value of MSRs. See Note 12 - Derivative Financial Instruments for further information.

Mortgage Servicing Rights

Activity in MSRs was as follows:



	Years Ended December 31,
(Dollars in thousands)	2019			2018			2017
Balance at beginning of period	$	25,114		$	24,182		$	29,385
Origination of servicing rights	2,595			1,895			3,061
Change in fair value, including amortization, net	(7,012		)	(963		)	(6,014		)
Sale of servicing rights	—			—			(2,250		)
Balance at end of period	$	20,697		$	25,114		$	24,182

The Company receives annual servicing fee income approximating 0.28% of the outstanding balance of the underlying loans. In connection with the Company's activities as a servicer of mortgage loans, the investors and the securitization trusts have no recourse to the Company's assets for failure of debtors to pay when due.

The Company is potentially subject to losses in its loan servicing portfolio due to loan foreclosures. The Company has obligations to either repurchase the outstanding principal balance of a loan or make the purchaser whole for the economic benefits of a loan if it is determined that the loan sold was in violation of representations or warranties made by it at the time of the sale, which the Company refers to as mortgage loan servicing putback expenses. Such representations and warranties typically include those made regarding loans that had missing or insufficient file documentation and/or loans obtained through fraud by borrowers or other third parties. Putback claims may be made until the loan is paid in full. When a putback claim is received, the Company evaluates the claim and takes appropriate actions based on the nature of the claim. The Company is required by Federal National Mortgage Association and Federal Home Loan Mortgage Corporation to provide a response to putback claims within 60 days of the date of receipt.

The Company incurred $33,000 in mortgage loan servicing putback expense for the year ended December 31, 2019, and $106,000 for the year ended December 31, 2017. The Company incurred no mortgage loan servicing putback expense for the year ended December 31, 2018. At December 31, 2019 and 2018, the reserve for mortgage loan servicing putback expenses totaled $229,000 and $196,000, respectively. There is inherent uncertainty in reasonably estimating the requirement for reserves against future mortgage loan servicing putback expenses. Future putback expenses depend on many subjective factors, including the review procedures of the purchasers and the potential refinance activity on loans sold with servicing released and the subsequent consequences under the representations and warranties.

GNMA optional repurchase programs allow financial institutions to buy back individual delinquent mortgage loans that meet certain criteria from the securitized loan pool for which the institution provides servicing. At the servicer's option and without GNMA's prior authorization, the servicer may repurchase a delinquent loan for an amount equal to 100% of the remaining principal balance of the loan. This buy-back option is considered a conditional option until the delinquency criteria are met, at which time the option becomes unconditional. When the Company is deemed to have regained effective control over these loans under the unconditional buy-back option, the loans can no longer be reported as sold and must be included in the balance sheet as mortgage loans held for sale, regardless of whether the Company intends to exercise the buy-back option. These loans totaling $27.9 million and $30.6 million at December 31, 2019 and 2018, respectively, were reported as held for sale at lower of cost or market and included in mortgage loans held for sale and FHLB advances and other borrowings in the consolidated financial statements.

Deposits

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Deposits

Note 10 - Deposits

Deposit balances are summarized as follows:



	December 31,
(Dollars in thousands)	2019		2018
Noninterest-bearing demand	$	1,077,706	$	951,015
Interest bearing demand	776,037		738,725
Money market	1,277,053		815,997
Brokered ⁽¹⁾	152,556		332,341
Savings	154,450		148,508
Time deposits ⁽¹⁾	790,810		796,552
Total Deposits	$	4,228,612	$	3,783,138

____________________________


⁽¹⁾	There were no brokered time deposits at December 31, 2019, and $7.9 million time deposits included in the brokered category at December 31, 2018.

Municipal deposits totaled $423.8 million and $395.0 million at December 31, 2019 and 2018, respectively.

Included in time deposits at December 31, 2019 and 2018, are $319.1 million and $364.1 million, respectively, of time deposits in denominations of $250,000 or more, inclusive of any brokered time deposits.

Maturities of time deposits, at December 31, 2019, are as follows:



(Dollars in thousands)
Year Ended December 31,
2020	$	560,177
2021	142,889
2022	45,210
2023	18,032
2024	24,502
Total	$	790,810

At December 31, 2019 and 2018, overdrawn deposits of $1.1 million and $841,000, respectively, were reclassified as unsecured loans.

Borrowings

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Borrowings

Note 11 - Borrowings

Borrowed funds are summarized as follows:



	December 31,
(Dollars in thousands)	2019		2018
Overnight repurchase agreements with depositors	$	16,717	$	40,314
Short-term FHLB advances ⁽¹⁾	100,000		100,000
GNMA repurchase liability	27,860		30,649
Long-term FHLB advances ⁽²⁾	272,613		274,261
Total FHLB advances and other borrowings	$	417,190	$	445,224
Junior subordinated debentures, net	$	9,671	$	9,644

__________________________


⁽¹⁾	Short-term FHLB advances at December 31, 2019, carried a fixed interest rate of 1.35% and matured on January 2, 2020, and short-term FHLB advances at December 31, 2018, carried a fixed interest rate of 2.70%, and matured on January 2, 2019.


⁽²⁾	Includes a FHLB advance of $250.0 million at both December 31, 2019 and 2018, callable quarterly with a final maturity in 2033, carrying a rate of 1.65%.

Short-Term Borrowings

As of December 31, 2019 and 2018, the Company had unsecured lines of credit for the purchase of federal funds in the amount of $180.0 million as of December 31, 2019 and 2018. The Company also had a $75.0 million secured repurchase line of credit as of December 31, 2019. There were no amounts outstanding on these lines at either date. It is customary for the financial institutions granting the unsecured lines of credit to require a minimum amount of cash be held on deposit at that institution. Amounts required to be held on deposit are typically $250,000 or less, and the Company has complied with all compensating balance requirements to allow utilization of these lines of credit.

Securities sold under agreements to repurchase consist of the Company's obligations to other parties and mature on a daily basis. These obligations to other parties carried a daily average interest rate of 1.20% and 0.86% for the years ended December 31, 2019 and 2018, respectively.

Long-Term Borrowings

Interest rates for FHLB long-term advances outstanding at December 31, 2019, ranged from 1.65% to 5.72%, and at December 31, 2018, ranged from 1.65% to 5.72%. These advances are all fixed rate and are subject to restrictions or penalties in the event of prepayment.

Scheduled maturities of long-term advances from the FHLB at December 31, 2019, are as follows:



(Dollars in thousands)
Years Ended December 31,
2020	$	1,070
2021	1,117
2022	2,479
2023	4,253
2024	3,142
Thereafter ⁽¹⁾	260,552
Total	$	272,613

__________________________


⁽¹⁾	Includes a FHLB advances totaling $250.0 million callable quarterly with a final maturity in 2033, carrying a rate of 1.65%.

Security for all indebtedness and outstanding commitments to the FHLB consists of a blanket floating lien on all of the Company's first mortgage loans, commercial real estate and other real estate loans, as well as the Company's investment in capital stock of the FHLB and deposit accounts at the FHLB. The net amounts available under the blanket floating lien as of December 31, 2019 and 2018, were $601.9 million and $468.8 million, respectively.

Additionally, as of December 31, 2019 and December 31, 2018, the Company had the availability to borrow $855.1 million and $795.5 million, respectively, from the discount window at the Federal Reserve Bank of Dallas, with $1.09 billion and $1.05 billion in commercial and industrial loans pledged as collateral, respectively. There were no borrowings against this line as of December 31, 2019 or 2018.

Holding Company Line of Credit

During 2018, the Company entered into a Loan Agreement (the "Loan Agreement") with NexBank SSB ("Lender") pursuant to which the Lender will make one or more revolving credit loans of up to $50 million at any time that the Company may use for working capital and general corporate purposes. The principal amounts borrowed under the Loan Agreement will bear interest at a variable rate equal to the applicable one-month LIBOR rate plus 3.25%. The line of credit available to the Company under the Loan Agreement expires on October 5, 2021, or such date of the acceleration of the obligation pursuant to the Loan Agreement, at which time all amounts borrowed, together with applicable interest, fees and other amounts owed by the Company shall be due and payable. There were no outstanding revolving credit loans under the Loan Agreement as of December 31, 2019 or 2018.

In connection with the entry into the Loan Agreement, the Company issued the Lender a Revolving Promissory Note dated October 5, 2018 (the "Note") in a principal amount of up to $50 million. The Company's obligations under the Loan Agreement and the Note are secured by a pledge of all of the issued and outstanding shares of Origin Bank (such shares, the "Collateral"), pursuant to the Pledge and Security Agreement, dated October 5, 2018 (the "Pledge Agreement"). The Loan Agreement, Note and the Pledge Agreement contain customary representations, warranties and covenants, including covenants requiring the Company and Origin Bank to maintain certain financial and capital ratios. The Loan Agreement, Note and the Pledge Agreement also provide for certain events of default, the occurrence of which, after any applicable cure period, would permit the Lender, among other things, to accelerate payment of all amounts outstanding under the Loan Agreement and the Note, as applicable, and to exercise its remedies with respect to the Collateral, including the sale of the Collateral.

Junior Subordinated Debentures

The Company has two wholly-owned, unconsolidated subsidiary grantor trusts that were established for the purpose of issuing trust preferred securities. The trust preferred securities accrue and pay distributions periodically at specified annual rates as provided in each trust agreement. The trusts used the net proceeds from each of the offerings to purchase a like amount of junior subordinated debentures (the "debentures") of the Company. The debentures are the sole assets of the trusts. The Company's obligations under the debentures and related documents, taken together, constitute a full and unconditional guarantee by the Company of the obligations of the trusts. The trust preferred securities are mandatorily redeemable upon maturity of the debentures, or upon earlier redemption as provided in the respective indentures. The Company has the right to redeem the debentures, in whole or in part on or after specific dates, at a redemption price specified in the indentures governing the debentures plus any accrued but unpaid interest to the redemption date. Due to the extended maturity date of the trust preferred securities, they are included in Tier I capital for regulatory purposes, subject to certain limitations.

The following table is a summary of the terms of the current debentures at December 31, 2019:



(Dollars in thousands) Issuance Trust	Issuance Date	Maturity Date	Amount Outstanding		Rate Type	Current Rate		Maximum Rate
CTB Statutory Trust I	07/2001	07/2031	$	6,702	Variable ⁽¹⁾	5.23	%	12.50	%
First Louisiana Statutory Trust I	09/2006	12/2036	4,124		Variable ⁽²⁾	3.69		16.00
			$	10,826

____________________________


⁽¹⁾	The trust preferred securities reprice quarterly based on the three-month LIBOR plus 3.30%, with the last reprice date on October 29, 2019.


⁽²⁾	The trust preferred securities reprice quarterly based on the three-month LIBOR plus 1.80%, with the last reprice date on December 12, 2019.

The balance of the debentures outstanding varies from the amounts carried on the consolidated balance sheets due to the remaining purchase discount of $1.2 million at both December 31, 2019 and 2018, which was established with the acquisition of the issuer of the First Louisiana Statutory Trust I securities, and which is being amortized over the remaining life of the securities using the interest method.

Derivative Financial Instruments

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Financial Instruments

Note 12 - Derivative Financial Instruments

Risk Management Objective of Using Derivatives

The Company enters into derivative financial instruments to manage risks related to differences in the amount, timing, and duration of the Company's known or expected cash receipts and its known or expected cash payments, as well as to manage changes in fair values of some assets which are marked at fair value through the consolidated statement of income on a recurring basis.

Cash Flow Hedges of Interest Rate Risk

The Company is a party to an interest rate swap agreement under which the Company receives interest at a variable rate and pays at a fixed rate. The derivative instrument represented by this swap agreement is designated as a cash flow hedge of the Company's forecasted variable cash flows under a variable-rate term borrowing agreement. During the term of the swap agreement, the effective portion of changes in the fair value of the derivative instrument are recorded in accumulated other comprehensive income and subsequently reclassified into earnings in the periods that the hedged forecasted variable-rate interest payments affected earnings. There was no ineffective portion of the change in fair value of the derivative recognized directly in earnings. The entire swap fair value will be reclassified into earnings before the expiration date of the swap agreement.

Derivatives Not Designated as Hedges

Customer interest rate derivative program

The Company offers certain derivatives products, primarily interest rate swaps, directly to qualified commercial banking customers to facilitate their risk management strategies. In some instances, the Company acts only as an intermediary, simultaneously entering into offsetting agreements with unrelated financial institutions, thereby mitigating its net risk exposure resulting from such transactions without significantly impacting its results of operations. Because the interest rate derivatives associated with this program do not meet hedge accounting requirements, changes in the fair value of both the customer derivatives and any offsetting derivatives are recognized directly in earnings as a component of noninterest income.

Mortgage banking derivatives

The Company enters into certain derivative agreements as part of its mortgage banking and related risk management activities. These agreements include interest rate lock commitments on prospective residential mortgage loans and forward commitments to sell these loans to investors on a mandatory delivery basis. The Company also economically hedges the value of MSRs by entering into a series of commitments to purchase mortgage-backed securities in the future.

Fair Values of Derivative Instruments on the Balance Sheet

The following tables disclose the fair value of derivative instruments in the Company's balance sheets at December 31, 2019, 2018 and 2017, as well as the effect of these derivative instruments on the Company's consolidated statements of income for the years ended December 31, 2019 and 2018:



	Notional Amounts⁽¹⁾				Fair Values
(Dollars in thousands)	December 31,				December 31,
Derivatives designated as cash flow hedging instruments:	2019		2018		2019			2018
Interest rate swaps included in other (liabilities) assets	$	10,500	$	10,500	$	(101	)	$	152

Derivatives not designated as hedging instruments:
Interest rate swaps included in other assets	$	217,633	$	127,512	$	8,425		$	2,302
Interest rate swaps included in other liabilities	246,397		145,857		(9,278		)	(2,625		)
Forward commitments to purchase mortgage-backed securities included in other assets	200,000		140,000		242			709
Forward commitments to sell residential mortgage loans included in other liabilities	60,600		24,750		(109		)	(221		)
Interest rate-lock commitments on residential mortgage loans included in other assets	37,382		16,244		717			400
	$	762,012	$	454,363	$	(3	)	$	565

____________________________


⁽¹⁾	Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the consolidated balance sheets.

The weighted-average rates paid and received for interest rate swaps at December 31, 2019 and 2018, were as follows:



	Weighted-Average Interest Rate
	December 31,
	2019				2018
Interest rate swaps:	Paid		Received		Paid		Received
Cash flow hedges	4.81	%	4.64	%	4.81	%	5.36	%
Non-hedging interest rate swaps - financial institution counterparties	4.93		4.13		5.02		4.67
Non-hedging interest rate swaps - customer counterparties	4.18		4.93		4.73		5.05

Gains and losses recognized on derivative instruments not designated as hedging instruments are as follows:



(Dollars in thousands)	Years Ended December 31,
Derivatives not designated as hedging instruments:	2019			2018			2017
Amount of gain (loss) recognized in mortgage banking revenue ⁽¹⁾	$	3,079		$	(2,450	)	$	(259	)
Amount of (loss) gain recognized in other non-interest income	(530		)	584			707

____________________________


⁽¹⁾	Gains and losses on these instruments are largely offset by market fluctuations in mortgage servicing rights. See Note 9 - Mortgage Banking for more information on components of mortgage banking revenue.

Some interest rate swaps included in other assets were subject to a master netting arrangement with the counterparty in all years presented and could be offset against some amounts included in interest rate swaps included in other liabilities. The Company has chosen not to net these exposures in the consolidated balance sheets, and any impact of netting these amounts would not be significant.

At December 31, 2019 and 2018, the Company had cash collateral on deposit with swap counterparties totaling $15.3 million and $1.9 million, respectively. These amounts are included in interest-bearing deposits in banks in the consolidated balance sheets and are considered restricted cash until such time as the underlying swaps are settled.

Stock and Incentive Compensation Plans

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Stock and Incentive Compensation Plans

Note 13 - Stock and Incentive Compensation Plans

The Company has granted, and currently has outstanding, stock and incentive compensation awards subject to the provisions of the Company's 2012 Stock Incentive Plan ("2012 Plan"). Additionally, awards have been issued prior to the establishment of the 2012 Plan, some of which were still outstanding at December 31, 2019. The 2012 Plan is designed to provide flexibility to the Company regarding its ability to motivate, attract and retain the services of key officers, employees and directors. The 2012 Plan allows the Company to make grants of dividend equivalent rights, incentive stock options, non-qualified stock options, performance unit awards, restricted stock awards, restricted stock units and stock appreciation rights. At December 31, 2019, the maximum number of shares of the Company's common stock available for issuance under the 2012 Plan was 950,152 shares.

Share-based compensation cost charged to income for the years ended December 31, 2019, 2018 and 2017, is presented below:



	Years Ended December 31,
(Dollars in thousands)	2019		2018		2017
Restricted stock	$	2,247	$	1,462	$	1,180
Stock options⁽¹⁾	—		—		(30		)
Total stock compensation expense	$	2,247	$	1,462	$	1,150
Related tax benefits recognized in net income	$	472	$	307	$	403

____________________________


⁽¹⁾	Stock option expense for the year ended December 31, 2017, included expense reversal related to 16,638 common stock options forfeited during the period. All remaining stock options became fully vested during the first quarter of 2017, with no further expense incurred after February 2017.

Restricted Stock Grants

The Company's restricted stock grants are time-vested awards and are granted to the Company's Board of Directors, executives and senior management team. The service period in which time-vested awards are earned ranges from one to five years. Time-vested awards are valued utilizing the fair value of the Company's stock at the grant date. These awards are recognized on the straight-line method over the requisite service period, with forfeitures recognized as they occur.

The following table summarizes the Company's time-vested award activity:



	Years Ended December 31,
	2019				2018				2017
	Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value
Nonvested shares, January 1,	174,407		$	35.01	61,293		$	24.61	84,019		$	24.22
Granted	37,641		32.77		151,324		37.51		35,913		25.14
Vested	(59,344	)	33.50		(36,209	)	27.70		(55,003	)	24.39
Forfeited	(3,255	)	30.21		(2,001	)	37.47		(3,636	)	24.12
Nonvested shares, December 31,	149,449		$	35.15	174,407		$	35.01	61,293		$	24.61

During the year ended December 31, 2019, no shares were retired by the Company upon vesting of restricted stock awards. During the year ended December 31, 2018, award recipients surrendered and the Company retired 910 shares to cover taxes owed upon the vesting of restricted stock awards. During the year ended December 31, 2017, award recipients surrendered and the Company retired 11,843 shares to cover taxes owed upon the vesting of restricted stock awards.

At December 31, 2019, there was $4.2 million of total unrecognized compensation cost related to nonvested restricted shares awarded under the 2012 Plan. That cost is expected to be recognized over a weighted average period of 2.5 years.

Stock Option Grants

The Company issues common stock options to select officers and employees through individual agreements and as a result of obligations assumed in association with certain business combinations. As a result, both incentive and nonqualified stock options have been issued and may be issued in the future. The exercise price of each option varies by agreement and is based on either the fair value of the stock at the date of the grant in circumstances where option grants occurred or based on the previously committed exercise price in the case of options acquired through merger. No outstanding stock option has a term that exceeds twenty years, and all of the outstanding options are fully vested. The Company recognizes compensation cost for stock option grants over the required service period based upon the grant date fair-value, which is established using a Black-Scholes valuation model. The Black-Scholes valuation model uses assumptions of risk-free interest rate, expected term of stock options, expected stock price volatility and expected dividends. Forfeitures are recognized as they occur.

The table below summarizes the status of the Company's stock options and changes during the years ended December 31, 2019, 2018 and 2017.



(Dollars in thousands, except per share amounts)	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value⁽¹⁾
Outstanding at January 1, 2017	358,638		$	11.37	7.79	$	3,844
Exercised	(22,500	)	12.29		—	304
Forfeited and expired	(16,638	)	23.89		—	—
Outstanding at December 31, 2017	319,500		10.65		7.07	4,840
Exercised	(45,500	)	12.29		—	—
Outstanding at December 31, 2018	274,000		10.38		6.75	6,493
Exercised	(20,000	)	8.25		—	—
Outstanding at December 31, 2019	254,000		$	10.55	5.81	$	6,932
Exercisable at December 31, 2019	254,000		$	10.55	5.81	$	6,932

____________________________

⁽¹⁾

The intrinsic value for stock options for periods at or prior to December 31, 2017, is calculated based on the difference between the weighted average exercised price of the underlying awards and the weighted average market price of the Company's common stock calculated over thirty days immediately prior to the last day of the Company's fiscal year.

Employee Retirement Plan	12 Months Ended
Employee Retirement Plan	Dec. 31, 2019
Retirement Benefits [Abstract]
Employee Retirement Plan	Note 14 - Employee Retirement Plan Defined Contribution Retirement Plan The Company maintains the Origin Bancorp, Inc. Employee Retirement Plan ("Retirement Plan") that is a defined contribution benefit plan. During 2018, the Company amended and restated its Employee Stock Ownership Plan ("ESOP") as the Retirement Plan, a profit-sharing plan that allows contributions under section 401(k) of the Internal Revenue Code. The Retirement Plan covers substantially all employees who meet certain other requirements and employment classification criteria. Under the provisions of the Retirement Plan, the Company may make discretionary matching contributions on a percentage, not to exceed 6%, of a participant's elective deferrals. Any percentage(s) determined by the Company shall apply to all eligible persons for the entire plan year. Historically, the Company has matched 50% of the first 6% of eligible compensation deferred by a participant. Eligible compensation includes salaries, wages, overtime and bonuses, and excludes expense reimbursements and fringe benefits. In addition, the Company may make additional discretionary contributions out of current or accumulated net profit. Matching contributions are invested as directed by the participant. The total of the Company's contributions may not exceed limitations set forth in the Retirement Plan document or the maximum deductible under the Internal Revenue Code. Although it has not expressed any intention to do so, the Company has the right to terminate the Retirement Plan at any time. The total expense related to the Retirement Plan, including optional contributions, was $1.8 million, $1.6 million and $1.4 million for the years ended December 31, 2019, 2018 and 2017, respectively. In 2018, as a result of the Company’s initial public offering, the presentation requirement of Retirement Plan shares as deducted from permanent stockholders’ equity in the consolidated balance sheets was removed. The change in presentation is seen in the consolidated statement of changes in stockholders’ equity for the year ended December 31, 2018. Other Benefit Plans The Company has established non-qualified defined benefit plans for some of its key executives for which deferred compensation liabilities are recorded as a component of accrued expenses and other liabilities in the accompanying consolidated balance sheets. The deferred compensation liability was $9.8 million and $9.0 million as of December 31, 2019 and 2018, respectively. The expense recorded for the deferred compensation plan totaled $1.2 million for the year ended December 31, 2019, and $1.1 million for each of the years ended December 31, 2018 and 2017.

Income Taxes

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Income Taxes

Note 15 - Income Taxes

The provision for income taxes is as follows:



(Dollars in thousands)	Years Ended December 31,
Federal income taxes:	2019			2018			2017
Current	$	14,232		$	4,562		$	715
Deferred	(2,513		)	5,658			4,644
State income taxes:
Current	1,030			638			167
Deferred	(83		)	(21		)	287
Income tax expense	$	12,666		$	10,837		$	5,813

The Tax Cuts and Jobs Act, enacted on December 22, 2017, reduced the U.S. federal corporate tax rate from 35% to 21% effective January 1, 2018. The Company remeasured certain deferred tax assets and liabilities in the period of enactment based on the rates at which they are expected to reverse in the future, which is generally 21%. The Company completed its analysis of the remeasurement of the Company's deferred tax asset within the measurement period and the amount is not materially different from the provisional amount recorded in 2017.

During the first quarter of 2018, the Company adopted the provisions of ASU 2018-02 which resulted in a $282,000 adjustment from accumulated other comprehensive income to retained earnings.

A reconciliation of income tax expense at the statutory rate to the Company's actual income tax expense is below:



	Years Ended December 31,
	2019					2018					2017
(Dollars in thousands)	Amount			%		Amount			%		Amount			%
Income taxes computed at statutory rate	$	13,975		21.00	%	$	13,113		21.00	%	$	7,169		35.00	%
Tax exempt revenue, net of nondeductible interest	(644		)	(0.97	)	(907		)	(1.45	)	(1,629		)	(7.95	)
Low-income housing tax credits, net of amortization	(514		)	(0.77	)	(691		)	(1.11	)	(624		)	(3.05	)
Other tax credits, net of add-backs	(1,218		)	(1.83	)	(1,218		)	(1.95	)	(1,002		)	(4.89	)
Bank-owned life insurance income	(158		)	(0.24	)	(150		)	(0.24	)	(221		)	(1.08	)
State income taxes, net of federal benefit	730			1.10		469			0.75		186			0.91
Stock-based compensation	(100		)	(0.15	)	(252		)	(0.40	)	(80		)	(0.39	)
Deferred tax write-down for enacted tax rate changes	—			—		231			0.37		1,972			9.63
Other	595			0.89		242			0.38		42			0.20
Total income tax expense	$	12,666		19.03	%	$	10,837		17.35	%	$	5,813		28.38	%

Significant components of deferred tax assets and liabilities are as follows:



(Dollars in thousands)	December 31,
Deferred tax assets:	2019			2018
Credit loss allowances	$	8,557		$	7,762
Deferred compensation and share-based compensation	3,698			2,471
Net operating loss carryforwards	1,245			1,238
Other	1,441			1,068
Gross deferred tax assets	14,941			12,539
Valuation allowance	(970		)	(867		)
Deferred tax assets net of valuation allowance	$	13,971		$	11,672

Deferred tax liabilities:
Basis difference in premises and equipment	$	2,669		$	1,655
Intangible assets	157			218
Mortgage servicing rights	4,472			5,426
Other	152			565
Gross deferred tax liabilities	7,450			7,864
Net deferred tax asset	$	6,521		$	3,808

At December 31, 2019, the Company has $3.7 million in Federal gross net operating loss carryforwards acquired in previous business combinations expiring between 2022 and 2028, and $11.1 million in state net operating losses. Due to limitations on the amounts of these losses that can be recognized annually, the Company has determined that it is more likely than not that some of these net operating loss carryforwards will expire unused, and has established a $970,000 valuation allowance related to these carryforwards.

The Company files a consolidated income tax return in the U.S. federal jurisdiction and various states. With few exceptions, the Company is no longer subject to income tax examinations by tax authorities in these taxing jurisdictions for the years before 2016.

Accumulated Other Comprehensive Income

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Accumulated Other Comprehensive Income

Note 16 - Accumulated Other Comprehensive Income

Accumulated other comprehensive income ("AOCI") includes the after-tax change in unrealized gains and losses on AFS securities and cash flow hedging activities.



(Dollars in thousands)	Unrealized Gains (Losses) on AFS Securities			Unrealized Gains (Losses) on Cash Flow Hedges			Accumulated Other Comprehensive Income
Balance at January 1, 2017	$	3,505		$	(42	)	$	3,463
Net change	(2,225		)	69			(2,156		)
Balance at January 1, 2018	1,280			27			1,307
Net change	(4,157		)	88			(4,069		)
Reclassification of tax effects related to the adoption of ASU 2018-02⁽¹⁾:
Current	(293		)	17			(276		)
Deferred	569			(11		)	558
Balance at January 1, 2019	(2,601		)	121			(2,480		)
Net change	9,013			(200		)	8,813
Balance at December 31, 2019	$	6,412		$	(79	)	$	6,333

____________________________

⁽¹⁾

During the first quarter of 2018, the Company adopted ASU 2018-02. The ASU was issued by the FASB in February 2018, to address the issue of other comprehensive income or loss that became stranded in AOCI as a result of the re-measurement of an entity's deferred income tax assets and liabilities following the reduction of the U.S. federal corporate tax rate from 35% to 21% pursuant to the enactment of the Tax Cuts and Jobs Act in December 2017. The Company also had certain current tax amounts stranded in AOCI that resulted from a tax accounting election to tax net gains and losses on AFS securities and cash flow hedges as current items beginning in 2016. The Company reclassifies the taxes from AOCI to earnings as the individual securities and hedges are realized. Due to the change in corporate tax rates, the Company had certain net gains and losses taxed at the 35% rate reflected in AOCI. As these transactions are realized over time, they will flow through income tax expense at the 21% rate. Rather than adjusting income tax expense for the difference as each of these securities and instruments are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment.

Capital and Regulatory Matters

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Capital and Regulatory Matters

Note 17 - Capital and Regulatory Matters

The Company (on a consolidated basis) and the Bank are subject to various regulatory capital requirements administered by federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company's consolidated financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and the Bank must meet specific capital guidelines that involve quantitative measures of assets, liabilities and certain off-balance sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings and other factors.

The Company is subject to the Basel III regulatory capital framework ("Basel III Capital Rules"), which includes a 2.5% capital conservation buffer effective for the Company as of January 1, 2019. The capital conservation buffer is designed to absorb losses during periods of economic stress and requires increased capital levels for the purpose of capital distributions and other payments. Failure to meet the full amount of the buffer will result in restrictions on the Company's ability to make capital distributions, which includes dividend payments and stock repurchases and to pay discretionary bonuses to executive officers.

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total, CET1 and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined), and of Tier 1 capital (as defined) to average assets (as defined). Management believes, at December 31, 2019 and 2018, that the Company and the Bank met all capital adequacy requirements to which they are subject, including the capital buffer requirement.

At December 31, 2019 and 2018, the Bank's capital ratios exceeded those levels necessary to be categorized as "well capitalized" under the regulatory framework for prompt corrective action. To be categorized as "well capitalized," the Bank must maintain minimum total risk based, CET1, Tier 1 risk based and Tier 1 leverage ratios as set forth in the table.

The actual capital amounts and ratios of the Company and Bank at December 31, 2019 and 2018, are presented in the following table:



(Dollars in thousands) December 31, 2019	Actual				Minimum Capital Required - Basel III Fully Phased-In				To be Well Capitalized Under Prompt Corrective Action Provisions
Common Equity Tier 1 Capital to Risk-Weighted Assets	Amount		Ratio		Amount		Ratio		Amount		Ratio
Origin Bancorp, Inc.	$	561,630	11.74	%	$	334,785	7.00	%	N/A		N/A
Origin Bank	551,060		11.55		333,924		7.00		$	310,072	6.50	%
Tier 1 Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	570,975		11.94		406,524		8.50		N/A		N/A
Origin Bank	551,060		11.55		405,479		8.50		381,627		8.00
Total Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	610,305		12.76		502,175		10.50		N/A		N/A
Origin Bank	590,390		12.38		500,888		10.50		477,037		10.00
Leverage Ratio
Origin Bancorp, Inc.	570,975		10.91		209,298		4.00		N/A		N/A
Origin Bank	551,060		10.56		208,774		4.00		260,968		5.00
December 31, 2018
Common Equity Tier 1 Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	519,468		11.94		304,431		7.00		N/A		N/A
Origin Bank	508,826		11.73		303,621		7.00		$	281,934	6.50	%
Tier 1 Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	528,786		12.16		369,668		8.50		N/A		N/A
Origin Bank	508,826		11.73		368,683		8.50		346,996		8.00
Total Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	564,437		12.98		456,647		10.50		N/A		N/A
Origin Bank	544,477		12.55		455,430		10.50		433,743		10.00
Leverage Ratio
Origin Bancorp, Inc.	528,786		11.21		188,711		4.00		N/A		N/A
Origin Bank	508,826		10.81		188,229		4.00		235,287		5.00

In the ordinary course of business, the Company depends on dividends from the Bank to provide funds for the payment of dividends to stockholders and to provide for other cash requirements. Banking regulations may limit the amount of dividends that may be paid. Approval by regulatory authorities is required if the effect of dividends declared would cause the regulatory capital of the Bank to fall below specified minimum levels. Approval is also required if dividends declared and paid exceed the Bank's year-to-date net income combined with the retained net income for the preceding year, which was $86.5 million as of December 31, 2019.

Stock Repurchases

In a transaction that was consummated on August 2, 2019, we repurchased 300,000 shares of our common stock pursuant to our stock buyback program at a price per share of $33.50 for an aggregate purchase price of $10.1 million. As of the date of this report, approximately $29.9 million may still be purchased under the stock buyback program.

- Definition

The entire disclosure for regulatory capital requirement for depository and lending institutions. Institutions include, but not are not limited to, finance company, insured depository institution, bank holding company, savings and loan association holding company, bank and savings institution not federally insured, mortgage company, foreign financial institution and credit union.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1C
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958570-112826

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-SubTopic 505
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Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
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-Section 50
-Paragraph 1E
-URI http://asc.fasb.org/extlink&oid=117337116&loc=SL5958574-112826

Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
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-URI http://asc.fasb.org/extlink&oid=117337116&loc=d3e65071-112826

+ Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 18 - Commitments and Contingencies

Credit Related Commitments

In the normal course of business, the Company enters into financial instruments, such as commitments to extend credit and letters of credit, to meet the financing needs of its customers. Such instruments are not reflected in the accompanying consolidated financial statements until they are funded, although they expose the Company to varying degrees of credit risk and interest rate risk in much the same way as funded loans.

Commitments to extend credit include revolving commercial credit lines, nonrevolving loan commitments issued mainly to finance the acquisition and development or construction of real property or equipment, and credit card and personal credit lines. The availability of funds under commercial credit lines and loan commitments generally depends on whether the borrower continues to meet credit standards established in the underlying contract and has not violated other contractual conditions. Loan commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee by the borrower. Credit card and personal credit lines are generally subject to cancellation if the borrower's credit quality deteriorates. A number of commercial and personal credit lines are used only partially or, in some cases, not at all before they expire, and the total commitment amounts do not necessarily represent future cash requirements of the Company.

A substantial majority of the letters of credit are standby agreements that obligate the Company to fulfill a customer's financial commitments to a third party if the customer is unable to perform. The Company issues standby letters of credit primarily to provide credit enhancement to its customers' other commercial or public financing arrangements and to help them demonstrate financial capacity to vendors of essential goods and services.

The contract amounts of these instruments reflect the Company's exposure to credit risk. The Company undertakes the same credit evaluation in making loan commitments and assuming conditional obligations as it does for on-balance sheet instruments and may require collateral or other credit support. These off-balance sheet financial instruments are summarized below:



	December 31,
(Dollars in thousands)	2019		2018
Commitments to extend credit	$	1,374,055	$	1,178,735
Standby letters of credit	39,344		46,860

In addition to the above, the Company guarantees the credit card debt of certain customers to the merchant bank that issues the credit cards. These guarantees are in place for as long as the guaranteed credit card is open. At December 31, 2019 and 2018, these credit card guarantees totaled $489,000 and $772,000, respectively. This amount represents the maximum potential amount of future payments under the guarantee for which the Company would be responsible in the event of customer non-payment.

At December 31, 2019 and 2018, the Company had FHLB letters of credit totaling $228.0 million and $172.0 million, respectively, available to secure public deposits, and for other purposes required or permitted by law.

As of December 31, 2019, the Company held 21 unfunded letters of credit from the FHLB totaling $241.3 million with expiration dates ranging from January 15, 2020, to February 25, 2021. As of December 31, 2018, the Company held 16 unfunded letters of credit from the FHLB totaling $186.6 million with expiration dates ranging from February 14, 2019, to November 30, 2020.

Management establishes an asset-specific allowance for lending-related commitments that are considered impaired and computes a formula-based allowance for performing consumer and commercial lending-related commitments. These are computed using a methodology similar to that used for the commercial loan portfolio, modified for expected maturities and probabilities of drawdown. The reserve for lending-related commitments was $1.8 million and $1.4 million at December 31, 2019 and 2018, respectively, and is included in other liabilities in the accompanying consolidated balance sheets.

Loss Contingencies

From time to time the Company is also party to various legal actions arising in the ordinary course of business. At this time, management does not expect that loss contingencies, if any, arising from any such proceedings, either individually or in the aggregate, would have a material adverse effect on the consolidated financial position or liquidity of the Company.

Related Party Transactions

12 Months Ended

Dec. 31, 2019

Related Party Transactions

Note 19 - Related Party Transactions

Loans to executive officers, directors, and their affiliates at December 31, 2019 and 2018, were as follows:



(Dollars in thousands)	2019			2018
Balance, beginning of year	$	1,328		$	9,934
Advances	450			1,775
Principal repayments	(495		)	(1,845		)
Effect of changes in composition of related parties	(190		)	(8,536		)
Balance, end of year	$	1,093		$	1,328

Commitments to extend credit	$	2,212		$	3,420

None of the above loans were considered non-performing or potential problem loans. These loans were made in the ordinary course of business and on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with other unaffiliated persons and do not involve more than normal risk of collectability.

Deposits from related parties held by the Company at December 31, 2019 and 2018, amounted to $27.0 and $30.3 million, respectively.

Business Combinations	12 Months Ended
Business Combinations	Dec. 31, 2019
Business Combinations [Abstract]
Business Combinations	Note 20 - Business Combinations All acquisitions are accounted for using the acquisition method of accounting. Accordingly, the assets and liabilities of acquired entities were recorded at their estimated fair values at the acquisition date. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market willing participants at the measurement date. The Company determines the estimated fair values after review and consideration of relevant information, including discounted cash flows, quoted market prices, third party valuations, and estimates made by management. Purchase price allocations on completed acquisitions may be modified through the measurement period which cannot exceed one year from the acquisition date. The excess of the purchase price over the estimated fair value of the net assets for tax-free acquisitions is recorded as goodwill, none of which is deductible for tax purposes. Acquisition-related costs are recognized separately from the acquisition and are expensed as incurred. The results of operations for the acquisition described below have been included in the Company's consolidated financial statements beginning on the acquisition date. Reeves, Coon & Funderburg On July 1, 2018, the Company acquired certain assets and assumed certain liabilities of Reeves, Coon & Funderburg, ("RCF"), a Louisiana-based independent insurance agency offering commercial, personal, health and life insurance. Total consideration was $9.5 million, which was comprised of 66,824 shares of its common stock at a price of $40.50 per share, based upon the closing stock price on the date of the acquisition, and $6.8 million in cash. As the consideration paid for RCF exceeded the provisional value of the tangible net assets acquired, goodwill of $4.5 million and identifiable intangible assets valued at $4.9 million associated primarily with RCF's customer relationships were recorded related to the acquisition. This goodwill resulted from the combination of expected operational synergies and increased market share.

Condensed Parent Company Only Financial Statements

12 Months Ended

Dec. 31, 2019

Condensed Financial Information Disclosure [Abstract]

Condensed Parent Company Only Financial Statements

Note 21 - Condensed Parent Company Only Financial Statements

Financial statements of Origin Bancorp, Inc. (parent company only) are as follows:



(Dollars in thousands)	December 31,
Condensed Balance Sheets	2019		2018
Assets
Cash and cash equivalents	$	5,909	$	5,882
Investment in affiliates/subsidiaries	593,079		543,515
Other assets	10,531		10,393
Total assets	$	609,519	$	559,790
Liabilities and Stockholders' Equity
Junior subordinated debentures	$	9,671	$	9,644
Accrued expenses and other liabilities	586		367
Total liabilities	10,257		10,011
Stockholders' Equity
Common stock	117,405		118,633
Additional paid‑in capital	235,623		242,041
Retained earnings	239,901		191,585
Accumulated other comprehensive income (loss)	6,333		(2,480		)
Total stockholders' equity	599,262		549,779
Total liabilities and stockholders' equity	$	609,519	$	559,790



(Dollars in thousands)	Years Ended December 31,
Condensed Statements of Income	2019		2018		2017
Income:
Dividends from subsidiaries	$	17,500	$	4,500	$	8,000
Other	470		2,052		41
Total income	17,970		6,552		8,041
Expenses:
Interest expense	7		—		—
Salaries and employee benefits	728		658		433
Other	2,121		2,015		1,384
Total expenses	2,856		2,673		1,817
Income before income taxes and equity in undistributed net income of subsidiaries	15,114		3,879		6,224
Income tax benefit	502		84		477
Income before equity in undistributed net income of subsidiaries	15,616		3,963		6,701
Equity in undistributed net income of subsidiaries	38,266		47,642		7,968
Net income	$	53,882	$	51,605	$	14,669



(Dollars in thousands)	Years Ended December 31,
Condensed Statements of Cash Flows	2019			2018			2017
Cash flows from operating activities:
Net income	$	53,882		$	51,605		$	14,669
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	9			9			11
Equity in undistributed net income of subsidiaries	(38,266		)	(47,642		)	(7,968		)
Amortization of subordinated debentures discount	28			25			23
Stock compensation	283			356			78
Other, net	(153		)	(2,543		)	5,488
Net cash provided by operating activities	15,783			1,810			12,301
Cash flows from investing activities:
Capital contributed to subsidiaries	—			(45,794		)	—
Net purchases of non-marketable equity securities held in other financial institutions	—			(2,213		)	(2,065		)
Net cash used in investing activities	—			(48,007		)	(2,065		)
Cash flows from financing activities:
Dividends paid	(5,863		)	(5,941		)	(6,996		)
Taxes paid related to net share settlement of equity awards	—			(23		)	(410		)
Cash received on exercise of stock options	166			559			186
Proceeds from issuance of common stock	—			95,178			—
Payment to repurchase preferred stock	(10,059		)	(48,260		)	—
Net cash provided by (used by) financing activities	(15,756		)	41,513			(7,220		)
Net increase (decrease) in cash and cash equivalents	27			(4,684		)	3,016
Cash and cash equivalents at beginning of year	5,882			10,566			7,550
Cash and cash equivalents at end of year	$	5,909		$	5,882		$	10,566

Summary of Quarterly Financial Statements (Unaudited)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Statements (Unaudited)

Note 22 - Summary of Quarterly Financial Statements (Unaudited)

The following tables present selected unaudited data from the Company's condensed consolidated quarterly statements of income for the quarterly periods within the years ended December 31, 2019 and 2018:



	Quarters Ended - 2019
(Dollars in thousands)	December 31		September 30		June 30		March 31
Total interest income	$	56,719	$	58,806	$	57,063	$	54,494
Total interest expense	12,624		14,184		14,094		12,468
Net interest income	44,095		44,622		42,969		42,026
Provision for credit losses	2,377		4,201		1,985		1,005
Net interest income after provision for credit losses	41,718		40,421		40,984		41,021
Non-interest income, exclusive of gain on sales of securities, net	10,818		12,860		11,176		11,604
Gain on sales of securities, net	—		20		—		—
Non-interest expense	36,534		35,064		37,095		35,381
Income before income taxes	16,002		18,237		15,065		17,244
Income tax expense	3,175		3,620		2,782		3,089
Net income	$	12,827	$	14,617	$	12,283	$	14,155
Basic earnings per common share ⁽¹⁾	$	0.55	$	0.62	$	0.52	$	0.60
Diluted earnings per common share ⁽¹⁾	0.55		0.62		0.52		0.60

____________________________


⁽¹⁾	Due to the combined impact of the repurchase of common stock on the quarterly average common shares outstanding calculation compared to the impact of the repurchase of common stock on the year-to-date average common shares outstanding calculation, and the effect of rounding, the sum of the quarterly earnings per common share will not equal the year-to-date earnings per common share amount.



	Quarters Ended - 2018
(Dollars in thousands)	December 31			September 30		June 30		March 31
Total interest income	$	53,058		$	48,842	$	44,752	$	41,444
Total interest expense	10,997			9,345		7,582		6,720
Net interest income	42,061			39,497		37,170		34,724
Provision (benefit) for credit losses	1,723			504		311		(1,524		)
Net interest income after provision for credit losses	40,338			38,993		36,859		36,248
Non-interest income, exclusive of (loss) on sales of securities, net	10,596			10,237		10,615		9,800
Loss on sales of securities, net	(8		)	—		—		—
Non-interest expense	35,023			34,344		32,012		29,857
Income before income taxes	15,903			14,886		15,462		16,191
Income tax expense	2,725			2,568		2,760		2,784
Net income	13,178			12,318		12,702		13,407
Less preferred stock dividends	—			—		808		1,115
Less income allocated to participating stockholders⁽¹⁾	86			54		40		553
Net income available to common stockholders⁽¹⁾	$	13,092		$	12,264	$	11,854	$	11,739
Basic earnings per common share⁽¹⁾	$	0.56		$	0.52	$	0.54	$	0.60
Diluted earnings per common share⁽¹⁾	0.55			0.52		0.53		0.60

____________________________

⁽¹⁾

Due to the methodology of how share allocations for preferred stock - Series D and losses are allocated under the two-class method, the sum of the quarterly periods may not agree to the year-to-date total presented in the consolidated statements of income for the year ended December 31, 2018.

Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Note 23 - Subsequent Events On February 6, 2020, Origin Bank, the wholly owned subsidiary of Origin Bancorp, Inc. announced the completion of an offering of $70 million in aggregate principal amount of 4.25% fixed-to-floating rate subordinated notes (the “Notes”) to certain investors in a transaction exempt from registration under Section 3(a)(2) of the Securities Act of 1933, as amended. The Notes will initially bear interest at a fixed annual rate of 4.25%, payable semi-annually in arrears, to but excluding February 15, 2025. From and including February 15, 2025 to but excluding the maturity date or early redemption date, the interest rate will equal the three-month LIBOR rate (provided, that in the event the three-month LIBOR is less than zero, the three-month LIBOR will be deemed to be zero) plus 282 basis points, payable quarterly in arrears. Origin Bank is entitled to redeem the Notes, in whole or in part, on or after February 15, 2025, and to redeem the Notes at any time in whole upon certain other specified events. Origin Bank intends to use the proceeds from the offering for general corporate purposes. The Notes are intended to qualify as Tier 2 capital for regulatory capital purposes for Origin Bank.

Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation. The consolidated financial statements include the accounts of the Company and all other entities in which Origin Bancorp, Inc. has a controlling financial interest, including the Bank and Davison Insurance Agency, LLC ("Davison Insurance"), doing business as Thomas & Farr Agency, and Reeves, Coon and Funderburg ("RCF"). All significant intercompany balances and transactions have been eliminated in consolidation. The Company's accounting and financial reporting policies conform, in all material respects, to accounting principles generally accepted in the United States ("U.S. GAAP") and to general practices within the financial services industry. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these consolidated financial statements were issued.

Reclassifications

Reclassifications. Certain amounts previously reported have been reclassified to conform to the current presentation. Such reclassifications had no effect on prior year net income or stockholders' equity.

Variable Interest Entities

Variable Interest Entities. The Company determines whether it has a controlling financial interest in an entity by first evaluating whether the entity is a voting interest entity or a variable interest entity ("VIE") under U.S. GAAP. Voting interest entities are entities in which the total equity investment at risk is sufficient to enable the entity to finance itself independently and provides the equity holders with the obligation to absorb losses, the right to receive residual returns and the right to make decisions about the entity's activities. The Company consolidates voting interest entities in which it has all, or at least a majority of, the voting interest. As defined in applicable accounting standards, VIEs are entities that lack one or more of the characteristics of a voting interest entity. A controlling financial interest in a VIE is present when an enterprise has both the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and an obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The enterprise with a controlling financial interest, known as the primary beneficiary, consolidates the VIE. The Company's wholly owned subsidiaries CTB Statutory Trust I and First Louisiana Statutory Trust I are VIEs for which the Company is not the primary beneficiary. Accordingly, the accounts of these trusts are not included in the Company's consolidated financial statements.

Operating Segments

Operating Segments. Operating segments are components of an enterprise about which separate financial information is available that is evaluated regularly by the chief operating decision-maker in deciding how to allocate resources and in assessing performance. The Bank is the only significant subsidiary upon which management makes decisions regarding how to allocate resources and assess performance. Individual bank branches offer a group of similar services, including commercial, real estate and consumer loans, time deposits, checking and savings accounts, all with similar operating and economic characteristics. While the chief operating decision-maker monitors the revenue streams of the various products and services, operations are managed and financial performance is evaluated on a Company-wide basis. Accordingly, all of the community banking services and branch locations are considered by management to be aggregated into one reportable operating segment, community banking.

Use of Estimates

Use of Estimates. To prepare financial statements in conformity with U.S. GAAP, management makes estimates and assumptions based on available information. These estimates and assumptions affect the amounts reported in the financial statements and the disclosures provided, and actual results could differ. Material estimates that are subject to significant change in the near term are the allowance for loan losses, valuation of other real estate owned, fair value of mortgage servicing rights, realization of deferred tax assets, fair values of financial instruments and the status of contingencies. Actual results could differ from those estimates.

Cash and Cash Equivalents

Cash and Cash Equivalents. For purposes of the statement of cash flows, the Company considers all cash on hand, demand deposits with other banks, federal funds sold and short term interest-bearing cash items with an original maturity less than 90 days to be cash equivalents. The Company maintains deposits with other financial institutions in amounts that exceed federal deposit insurance coverage. Furthermore, federal funds sold are essentially uncollateralized loans to other financial institutions. Management regularly evaluates the credit risk associated with the counterparties to these transactions and believes that the Company is not exposed to any significant credit risks on cash and cash equivalents.

Securities

Securities. The Company accounts for debt and equity securities as follows:

Available for Sale ("AFS") - Debt and equity securities that will be held for indefinite periods of time, including securities that may be sold in response to changes in market interest or prepayment rates, needs for liquidity and changes in the availability of and the yield of alternative investments are classified as AFS. These assets are carried at fair value. Fair value is determined using published quotes. If quoted market prices are not available, fair values are based on other methods including, but not limited to the discounting of cash flows.

Held to Maturity ("HTM") - Debt securities that management has the positive intent and ability to hold until maturity are classified as HTM and are carried at their remaining unpaid principal balance, net of unamortized premiums or unaccreted discounts.

Securities Carried at Fair Value through Income - Debt securities for which the Company has elected the fair value option for accounting are classified as securities carried at fair value through income. Management has elected the fair value option for these items to offset the corresponding change in fair value of related interest rate swap agreements. Fair value is determined using discounted cash flows and credit quality indicators. Changes in fair value are reported through the consolidated statements of income as a part of other noninterest income.

Unrealized gains and losses on AFS securities are excluded from earnings and reported net of tax in accumulated other comprehensive income until realized. Declines in the fair value of AFS and HTM securities below their cost are reflected in earnings as realized losses to the extent the impairment is deemed to be other-than-temporary credit losses. In estimating other-than-temporary impairment losses, management considers (1) the length of time and the extent to which the fair value has been less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) management's intent and ability to retain the investment in the issuer for a period of time sufficient to allow for any anticipated recovery in fair value. The amount of the impairment related to other factors is recognized in other comprehensive income unless there is no ability or intent to hold to recovery.

Purchase premiums and discounts are recognized in interest income using the interest method over the terms of the securities to the earlier of the call date or maturity date. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method.

Non-marketable Equity Securities Held in Other Financial Institutions

Non-marketable Equity Securities Held in Other Financial Institutions. Securities with limited marketability, such as stock in the Federal Reserve Bank of Dallas ("FRB") or the Federal Home Loan Bank of Dallas ("FHLB"), are carried at cost, less impairment, if any. These investments in stock do not have readily determinable fair values. The Company's remaining equity investments in other financial institutions, totaling $12.1 million and $11.7 million at December 31, 2019 and 2018, respectively, qualify for the practicability exception under Accounting Standards Update ("ASU") 2016-01 due to having illiquid markets and are carried at cost, less impairment, plus or minus any observable price changes.

Loans Held For Sale

Loans Held for Sale. Loans held for sale include mortgage loans and are carried at fair value, with unrealized gains and losses recorded in the consolidated statements of income.

Forward commitments to sell mortgage loans are acquired to reduce market risk on mortgage loans in the process of origination and mortgage loans held for sale. The forward commitments acquired by the Company for mortgage loans in process of origination are mandatory forward commitments, and the Company is required to substitute another loan or to buy back the commitment if the original loan does not fund. Typically, the Company delivers the mortgage loans within a few days after the loans are funded. These commitments are derivative instruments carried at fair value.

Gains and losses resulting from sales of mortgage loans are realized when the respective loans are sold to investors. Gains and losses are determined by the difference between the selling price (including the fair value of any items such as mortgage servicing rights) and the carrying amount of the loans sold. Fees received from borrowers to guarantee the funding of mortgage loans held for sale are recognized as income or expense when the loans are sold or when it becomes evident that the commitment will not be used.

The Company elects the fair value option for recording residential mortgage loans held for sale, as well as certain commercial real estate in accordance with U.S. GAAP.

Loans

Loans. Loans that management has the intent and ability to hold for the foreseeable future, or until maturity or payoff, are reported at their outstanding unpaid principal balances adjusted for charge-offs, the allowance for loan losses, and any deferred fees or costs on originated loans. Interest income is accrued on the unpaid principal balance. Loan origination fees, and certain direct origination costs, are deferred and amortized as a yield adjustment over the lives of the related loans using the interest method. Late fees are recognized as income when earned, assuming collectability is reasonably assured.

The Company has elected the fair value option on a small portion of its loans held for investment, with changes in fair value recorded in noninterest income. For these loans, the earned current contractual interest payment is recognized in interest income. Loan origination costs and fees are recognized in earnings as incurred and not deferred. Because these loans are recognized at fair value, the Company's allowance for loan losses policy does not apply to these loans. Fair value is determined using discounted cash flows and credit quality indicators.

In addition to loans issued in the normal course of business, the Company considers overdrafts on customer deposit accounts to be loans and classifies these overdrafts as loans in its consolidated balance sheets.

Loans are placed on nonaccrual status when management believes that the borrower's financial condition, after giving consideration to economic and business conditions and collection efforts, is such that collection of interest is doubtful, or generally when loans are 90 days or more past due. When accrual of interest is discontinued, all unpaid accrued interest is reversed. Past due status is based on contractual terms of the loan. Interest income on nonaccrual loans may be recognized to the extent cash payments are received, but payments received are usually applied to principal. Nonaccrual loans are generally returned to accrual status when principal and interest payments are less than 90 days past due, the customer has made required payments for at least six months, and the Company reasonably expects to collect all principal and interest.

Allowance for Loan Losses

Allowance for Loan Losses. The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to earnings. The allowance for loan losses is evaluated on a regular basis by management and is based upon management's periodic review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower's ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. Loans are charged off against the allowance for loan losses when management believes the loss is confirmed. Subsequent recoveries, if any, are credited to the allowance.

The allowance consists of allocated and general components. The allocated component relates to loans that are classified as impaired, and an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component relates to loans that are not classified as impaired and is based on historical charge-off experience and the expected loss, given default, derived from the Company's internal risk rating process. Other adjustments may be made to the allowance for pools of loans after an assessment of internal or external influences on credit quality that are not fully reflected in the historical loss or risk rating data.

Delinquency statistics are updated at least monthly and are the most meaningful indicator of the credit quality of one-to-four single family residential, home equity loans and lines of credit and other consumer loans. Internal risk ratings are considered the most meaningful indicator of credit quality for commercial and industrial, construction, and commercial real estate loans. Internal risk ratings are a key factor in identifying loans that are individually evaluated for impairment and impact management's estimates of loss factors used in determining the amount of the allowance for loan losses. Internal risk ratings are updated on a regular basis.

A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. Factors considered by management in determining impairment include payment status, collateral value, and the probability of collecting scheduled principal and interest payments when due. Impaired loans include nonperforming loans and loans modified in troubled debt restructurings ("TDRs"). TDRs are loans for which the contractual terms on the loan have been modified and both of the following conditions exist: (1) the borrower is experiencing financial difficulty and (2) the restructuring constitutes a concession. Concessions could include a reduction in the interest rate on the loan, payment extensions, forgiveness of principal, forbearance or other actions intended to maximize collection. The Company assesses all loan modifications to determine whether they constitute a TDR. All TDRs are considered impaired loans. Impairment is measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan's effective interest rate, the loan's obtainable market price or the fair value of the collateral if the loan is collateral dependent.

Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower's prior payment record, and the amount of the shortfall in relation to the principal and interest owed.

Premises and Equipment, net

Premises and Equipment, net. Land is carried at cost. Buildings and improvements are stated at cost less accumulated depreciation computed using the straight-line method over the estimated useful lives of the assets, which range from 35 to 39 years. Furniture, fixtures, and equipment are stated at cost less accumulated depreciation computed using the straight-line method over the estimated useful lives of the assets, which range from three to seven years.

Leases

Leases. The Company adopted ASU No. 2016-02 — Leases (Topic 842) as of January 1, 2019, and recorded a $19.7 million right-of-use ("ROU") asset offset by a $19.4 million lease liability, recognizing a net after tax $321,000 cumulative effect adjustment credit to retained earnings. The Company elected the package of practical expedients, which among other things, does not require reassessment of lease classification. The Company determines if an arrangement is a lease at inception. Operating lease assets are included in accrued interest receivable and other assets, operating lease liabilities are included in accrued expenses and other liabilities in the Company's consolidated balance sheets. The Company has made an accounting policy election not to recognize short-term lease assets and liabilities (less than a 12-month term) or immaterial equipment and server space leases in its balance sheets; instead, the Company recognizes the lease expense for these leases on a straight-line basis over the life of the lease. The Company has no material finance leases.

ROU assets represent the Company's right to use an underlying asset for the lease term and lease liabilities represent the Company's obligation to make lease payments arising from the lease. ROU lease assets and liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. The Company uses an estimated incremental collateralized borrowing rate, which is derived from information available at the lease commencement date and gives consideration to the applicable FHLB borrowing rates, when determining the present value of lease payments.

The Company's lease terms include options to extend a lease when it is reasonably certain that the Company will exercise that option. The Company's lease agreements do not contain any residual value guarantees. All of the Company's operating long-term leases are real estate leases, which are accounted for as a single lease component.

Mortgage Servicing Rights and Transfers of Financial Assets

Mortgage Servicing Rights and Transfers of Financial Assets. Gains or losses on "servicing-retained" loan sale transactions generally include a component reflecting the differential between the contractual interest rate of the loan and the interest rate to be received by the investor. The present value of the estimated future profit for servicing the loans is also taken into account in determining the amount of gain or loss on the sale of these loans. For loans sold servicing-retained, the fair value of mortgage servicing rights is recorded as an asset, with their value estimated using a discounted cash flow methodology to arrive at the present value of future expected earnings from the servicing of the loans. Significant model inputs include prepayment speeds, discount rates, and servicing costs. Servicing revenues are based on a contractual percentage of the outstanding principal or a fixed amount per loan and are recorded as income when earned.

Loans sold into the secondary market are considered transfers of financial assets. These transfers are accounted for as sales when control over the asset has been surrendered, which is deemed to have occurred when: an asset does not have any claims to it by the transferor or their creditors, including in bankruptcy or other receivership situations; the transferee obtains the unconditional right to pledge or exchange the asset; or the transfer does not include a repurchase provision above the limited recourse provisions of these loan sales.

Derivative Instruments and Hedging Activities

Derivative Instruments and Hedging Activities. All derivatives are recorded on the accompanying consolidated balance sheets at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Derivatives designated and qualifying as a hedge of the exposure to changes in the fair value of an asset, liability, or firm commitment attributable to a particular risk, such as interest rate risk, are considered fair value hedges. Derivatives designated and qualifying as a hedge of the exposure to variability in expected future cash flows, or other types of forecasted transactions, are considered cash flow hedges. Hedge accounting generally provides for the matching of the timing of gain or loss recognition on the hedging instrument with the recognition of the changes in the fair value of the hedged asset or liability that are attributable to the hedged risk in a fair value hedge or the earnings effect of the hedged forecasted transactions in a cash flow hedge. During the term of a cash flow hedge contract the effective portion of changes in fair value in the derivative instrument are recorded in accumulated other comprehensive income. Changes in the fair value of derivatives to which hedge accounting does not apply are recognized immediately in earnings.

Risk Management Objective of Using Derivatives

Cash Flow Hedges of Interest Rate Risk

Derivatives Not Designated as Hedges

Customer interest rate derivative program

Mortgage banking derivatives

Goodwill and Other Intangible Assets

Goodwill and Other Intangible Assets. Goodwill, which represents the excess of cost over the fair value of the net assets of an acquired business, is not amortized but tested for impairment on an annual basis, which is October 1 for the Company, or more often if events or circumstances indicate that there may be impairment. Other intangible assets, such as relationship based intangibles and core deposit intangibles, are amortized on a basis consistent with the receipt of economic benefit to us. Such assets are evaluated at least annually as to the recoverability of their carrying value for potential impairment. In the quarter following the period in which identified intangible assets become fully amortized, the fully amortized balances are removed from the gross asset and accumulated amortization amounts.

Other Real Estate Owned

Other Real Estate Owned. Other real estate owned ("OREO") represents properties acquired through foreclosure or acceptance of a deed in lieu of foreclosure on loans on which the borrowers have defaulted as to payment of principal and interest. OREO also includes bank-owned real estate which the Company is no longer utilizing and intends to sell. These properties are initially recorded at fair value, less cost to sell, at the date of foreclosure establishing a new cost basis. Fair value is determined based on third party appraisals. Any subsequent capital improvements that increase value are added to the balance of the properties. Any valuation adjustments required at the date of transfer from loans to OREO are charged to the allowance for loan losses. Any subsequent write-downs to reflect current fair value, or gains and losses on the sale of the properties are charged to noninterest income.

Overnight Repurchase Agreements with Depositors

Overnight Repurchase Agreements with Depositors. The Company enters into agreements under which it sells securities subject to an obligation to repurchase the same or similar securities. Under these arrangements, the Company may transfer legal control over the assets but still retain effective control through an agreement that both entitles and obligates it to repurchase the assets. Securities sold under agreements to repurchase generally mature on the banking day following that on which the investment was initially sold and are treated as collateralized financing transactions which are recorded at the amounts at which the securities were sold plus accrued interest. Interest rates and maturity dates of the securities involved vary and are not intended to be matched with funds from customers.

Mortgage Banking Revenue

Mortgage Banking Revenue. This revenue category primarily reflects the Company's mortgage production, sales and mortgage servicing revenue, including fees and income derived from mortgages originated with the intent to sell; mortgage sales and servicing; and the impact of risk management activities associated with the mortgage pipeline and mortgage servicing rights ("MSRs"). This revenue category also includes gains and losses on sales and changes in fair value for mortgage loans originated with the intent to sell and measured at fair value under the fair value option. Changes in the fair value of MSRs are reported in mortgage banking revenue. Net interest income from mortgage loans is recorded in interest income.

Income Taxes

Income Taxes. Income tax expense is the total of the current year income tax due or refundable and the change in deferred tax assets and liabilities. Deferred tax assets and liabilities are the expected future tax amounts for the temporary differences between carrying amounts and tax bases of assets and liabilities, computed using enacted tax rates. A valuation allowance, if needed, reduces deferred tax assets to the amount expected to be realized.

A tax position is recognized as a benefit only if it is "more likely than not" that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the "more likely than not" test, no tax benefit is recorded. The Company did not have any amount accrued with respect to uncertainty in income taxes at December 31, 2019 and 2018.

The Company recognizes interest and/or penalties related to income tax matters as a component of noninterest expense.

Stock-Based Compensation

Stock-Based Compensation. The cost of employee services received in exchange for stock options or restricted stock grants are measured using the fair value of the award on the grant date and is recognized over the service period.

Other Investments

Other Investments. The Company accounts for investments in limited partnerships, limited liability companies ("LLCs"), and other privately held companies using either the equity method of accounting or at amortized cost net of impairments and observable price changes. The accounting treatment depends upon the Company's percentage ownership or degree of management influence.

Under the equity method of accounting, the Company records its initial investment at cost. Subsequently, the carrying amount of the investment is increased or decreased to reflect its share of income or loss of the investee. The Company's recognition of earnings or losses from an equity method investment is based on its ownership percentage in the investee and the investee's earnings for the reporting period, and is recorded on a one-quarter lag.

All of the Company's investments in limited partnerships, LLCs, and other companies are privately held, and their fair values are not readily available. Management evaluates the investments in investees for impairment based on the investee's ability to generate cash through its operations or obtain alternative financing, and other subjective factors. There are inherent risks associated with investments in such companies, which may result in volatility in the consolidated statements of income in future periods.

Investments in Tax Credit Entities

Investments in Tax Credit Entities. As part of its Community Reinvestment Act responsibilities and due to their favorable economic characteristics, the Company invests in tax credit-motivated projects primarily in the markets it serves. These projects are directed at tax credits issued under Low-Income Housing Tax Credits. The Company generates returns on tax credit motivated projects through the receipt of federal, and if applicable, state tax credits. The federal tax credits are recorded as an offset to the income tax provision in the year that they are earned under federal income tax law – over 10 to 15 years beginning in the year in which rental activity commences. These credits, if not used in the tax return for the year of origination, can be carried forward for 20 years.

The Company invests in a tax credit entity, usually an LLC, which owns the real estate. The Company receives a nonvoting interest in the entity that must be retained during the compliance period for the credits (15 years for Low-Income Housing Tax Credit programs). Control of the tax credit entity rests in the 0.1% interest general partner, who has the power and authority to make decisions that impact economic performance of the project and is required to oversee and manage the project. Due to the lack of any voting, economic, or managerial control, and due to the contractual reduction in the investment, the Company accounts for its investment by amortizing the investment, beginning at the issuance of the certificate of occupancy of the project, over the compliance period, as management believes any potential residual value in the real estate will have limited value. Amortization is included as a component of income tax expense.

The Company has the risk of credit recapture if the project does not maintain compliance during the compliance period. No such events have occurred to date.

Earnings Per Share

Earnings Per Share. Basic and diluted earnings per common share for periods beginning after December 31, 2018, are calculated using the treasury method. Under the treasury method, basic earnings per share is calculated as net income divided by the weighted average number of common shares outstanding during the period. Diluted earnings per share includes the dilutive effect of additional potential common shares issuable under stock options and restricted stock awards.

Basic and diluted earnings per common share for periods ending on or before December 31, 2018, were calculated using the two-class method. The two-class method is an earnings allocation formula that determines earnings per share for each share of common stock and participating securities according to dividends declared (distributed earnings) and participation rights in undistributed earnings. Distributed and undistributed earnings were allocated between common and participating security stockholders based on their respective rights to receive dividends. Share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents were considered participating securities (e.g., restricted stock grants). Preferred stock that receives dividends based on dividends paid on common stock was also considered a participating security (e.g., Series D preferred stock). Net income attributable to common stockholders was then divided by the weighted average number of common shares outstanding during the period, net of participating securities.

Diluted income per common share considers common stock issuable under the assumed release of unvested restricted stock awards, convertible preferred stock being converted to common stock, and the assumed exercise of stock options granted. The dilutive effect of share-based payment awards that are not deemed to be participating securities is calculated using the treasury stock method, which assumes that the proceeds from exercise are used to purchase common stock at the average market price for the period. The dilutive effect of participating securities is calculated using the more dilutive of the treasury stock method (which assumes that the participating securities are exercised/released) or the two-class method (which assumes that the participating securities are not exercised/released and earnings are reallocated between common and participating security stockholders). Potentially dilutive common stock equivalents are excluded from the computation of diluted earnings per common share in periods in which the effect would be antidilutive.

Effect of Recently Adopted Accounting Standards and Effect of Newly Issued But Not Yet Effective Accounting Standards

Effect of Recently Adopted Accounting Standards

ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Since these amendments only relate to the reclassification of the income tax effects of the Tax Cuts and Jobs Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. These amendments require that an entity disclose a description of the accounting policy for releasing income tax effects from accumulated other comprehensive income. These amendments are effective for fiscal years beginning after December 15, 2018, and interim periods within those years. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. These amendments should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. Rather than adjusting income tax expense for the differences as the effect of the change in the U.S. federal corporate income tax rates are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment. The Company adopted this guidance during the first quarter of 2018, which resulted in a reclassification of $282,000 from accumulated other comprehensive income to retained earnings. The Company's policy is to release material stranded tax effects on a specific identification basis.

ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 permits hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk. It also changes the guidance for designating fair value hedges of interest rate risk and for measuring the change in fair value of the hedged item in fair value hedges of interest rate risk. In addition to the amendments to the designation and measurement guidance for qualifying hedging relationships, the amendments in this ASU also align the recognition and presentation of the effects of the hedging instrument and the hedged item in the consolidated financial statements. This ASU requires an entity to present the earnings effect of the hedging instrument in the same line item in the statement of income in which the earnings effect of the hedged item is reported. For public entities, these amendments were effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years. Early application was permitted. The Company analyzed its hedges and determined that the amendments in this ASU were not applicable to any hedge relationships in effect and therefore, no transition adjustment was necessary. The Company adopted this ASU during the first quarter of 2018.

ASU No. 2016-15 —Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments. ASU 2016-15 adds or clarifies guidance on the classification of certain cash receipts and payments in the statement of cash flows. The Company adopted this guidance on January 1, 2018, and, as a result, reclassified $844,000 of return of capital proceeds from limited partnership investments from operating activities to investing activities for the year ended December 31, 2017.

ASU No. 2016-02 — Leases (Topic 842). ASU 2016-02 requires lessees to recognize a lease liability and a right-of use ("ROU") asset on the balance sheet for operating leases. Accounting for finance (formerly known as capital) leases is substantially unchanged. The Company adopted this ASU as of January 1, 2019. Please see the Leases paragraphs above in this footnote for more information.

ASU No. 2016-01 —Financial Instruments —Overall (Subtopic 825-10). The Company adopted this update effective January 1, 2018. The main provisions are to eliminate the AFS classification of accounting for equity securities and to adjust the fair value disclosures for financial instruments carried at amortized cost such that the disclosed fair values represent an exit price as opposed to an entry price. The majority of the Company's equity investments qualify for the practical expedient allowed for equity securities without a readily determinable fair value, such that the Company has elected to carry these securities at cost adjusted for any observable transactions during the period, less any impairment. To date, no impairment has been recorded on the Company's investments in equity securities which do not have readily determinable fair values. The disclosure of fair value of the loan and interest-bearing deposit portfolios has been presented using an exit price methodology and had an immaterial impact on the Company's financial position.

ASU No. 2014-09 —Revenue from Contracts with Customers (Topic 606). The Company adopted this ASU on January 1, 2018, which outlines a single comprehensive revenue recognition model for entities to follow in accounting for revenue from contracts with customers. The implementation of this new guidance did not have a material impact on the measurement or recognition of revenue and no cumulative effect adjustment was recorded to opening retained earnings. Results for reporting periods beginning after January 1, 2018, are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company's historic accounting under Topic 605.

The majority of the Company's revenue is generated from sources outside the scope of Topic 606. Interest and fees on loans, income from investment securities and mortgage banking revenue are all outside the scope of Topic 606 and are recorded in adherence with U.S. GAAP. Service charges and fees on deposit accounts, credit card interchange, insurance commission and fee income, as well as gains and losses on the sale of other assets including OREO are within the scope of Topic 606; however, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Descriptions of the Company's revenue generating activities that are within the scope of Topic 606 are described below.

Service charges and fees on deposit accounts

Service charges and fees on deposit accounts are primarily comprised of maintenance fees, service fees, stop payment and insufficient funds fees. The Company's performance obligation for service fees or other fees covering a period of time are generally satisfied, and related revenue recognized, over the period in which the service is provided. The Company's performance obligations for transactional-based fees are generally satisfied, and related revenue recognized, at a point in time.

Insurance commission and fee income

The Company earns commission income through production on behalf of insurance carriers and also earns fee income by providing complementary services such as collection of premiums. In most instances the Company considers the performance obligation to be complete at the time the service was rendered.

Credit card interchange income

The Company records credit card interchange income at a point in time as card transactions occur. The Company's performance obligation for these transactions is deemed to have occurred upon completion of each transaction. The amounts are included as a component of other income in the consolidated statements of income.

Gain or loss on sale of other assets and OREO

In the normal course of business, the Company recognizes the sale on other assets and OREO, along with any gain or loss, when control of the property transfers to the buyer through an executed contractual agreement. The transaction price is fixed, and on occasion the Company will finance a portion of the purchase price of the transferred asset.

ASU No. 2018-15, Intangibles, Goodwill and Other, Internal Use Software - (Topic 350-40): Customer's Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement that is a Service Contract. The amendments in this ASU align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). Accordingly, the amendments require an entity (customer) in a hosting arrangement that is a service contract to follow the guidance in Subtopic 350-40 to determine which implementation costs to capitalize as an asset related to the service contract and which costs to expense. The amendments also require the entity (customer) to expense the capitalized implementation costs of a hosting arrangement that is a service contract over the term of the hosting arrangement, which includes reasonably certain renewals. For public business entities that file reports with the Securities and Exchange Commission ("SEC"), the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years, early adoption is permitted.

The Company prospectively adopted ASU 2018-15 effective October 1, 2018. As a result of this implementation, capitalized costs relating to internal use software totaled $455,000 at December 31, 2018, and are expensed over the useful life of the contract rather than expensed as incurred. The asset is reflected on the consolidated balance sheets in accrued interest receivable and other assets and the related amortization expense is reflected in data processing expense on the consolidated statements of income.

Effect of Newly Issued But Not Yet Effective Accounting Standards

ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments; ASU No. 2018-19, Codification Improvements to Topic 326, Financial Instruments - Credit Losses; ASU 2019-04, Codification Improvements to Topic 326, Financial Instruments - Credit Losses, Topic 815, Derivatives and Hedging, and Topic 825, Financial Instruments; ASU 2019-05, Financial Instruments - Credit Losses (Topic 326): Targeted Transition Relief; ASU 2019-11, Codification Improvements to Topic 326, Financial Instruments - Credit Losses; collectively, the "ASUs". These ASUs introduce and amend ASC Topic 326, Financial Instruments - Credit Losses and amend guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, Topic 326 eliminates the current incurred loss approach and, instead, requires an entity to reflect its current estimate of all expected credit losses. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected. This guidance also changes the accounting for purchased loans and securities with credit deterioration.

Topic 326 also applies to off-balance sheet exposures such as unfunded loan commitments, letters of credit and other financial guarantees. Expected credit losses related to off-balance sheet exposures will be presented as a liability rather than as an allowance.

The ASUs allow for certain accounting policy elections related to the treatment of accrued interest, the amortized cost components of charged-off balances, the treatment of prepayment assumptions related to discounted cash flow methodology and a limited use of the fair value option.

Topic 326 retains many of the current required disclosures, expands certain disclosures and adds some additional disclosures. For available for sale debt securities, entities are required to determine whether all or a portion of the unrealized loss on those securities is a credit loss. The guidance also eliminates the option for management to consider the length of time a security has been in an unrealized loss position as a factor in determining whether or not a credit loss exists. Topic 326 requires that credit losses be presented as an allowance for credit losses rather than as a direct write-down of the investment balance. This change allows improvements in credit quality to be recognized in earnings.

The Company has made significant changes in the processes and procedures to calculate the allowance for credit losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. In order to validate the operations and outputs associated with these ASUs, the Company is running parallel models and has made substantial progress toward (1) defining risk characteristics and creating loan pools based on those characteristics, (2) determining internal and external data sources that will be used, (3) deciding the loss methodologies that will be used, (4) calculating historical loss data and making appropriate adjustments using internal and external sources, (5) developing and refining an economic forecasting model, (6) documenting processes, procedures and model assumptions, (7) developing accounting policies relevant to the credit loss estimation process and (8) developing internal control procedures around the credit loss estimation process. For public business entities that are SEC filers, the ASUs are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company will implement these amendments in its fiscal year beginning January 1, 2020.

Upon adoption of these ASUs, the Company recognized a one-time, after tax cumulative effect adjustment of $760,000 to retained earnings at the beginning of the first quarter of 2020, increasing the allowance for credit losses by approximately $1.3 million and decreasing the off-balance sheet reserve by $382,000. The Company's held-to-maturity and available for sale securities were not materially affected by the adoption of this ASU due to the nature of the portfolios which consist of approximately 73% of U.S. government agency and mortgage-backed securities. Our adjustment to the allowance for credit losses at the transition date may vary from our estimate due to refinements in the loss estimation models or factors.

ASU No. 2018-13, Fair Value Measurement - (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement. The amendments in this ASU modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement, based on the concepts in Financial Accounting Standards Board ("FASB") Concepts Statement, Conceptual Framework for Financial Reporting—Chapter 8: Notes to Financial Statements, including the consideration of costs and benefits. For public business entities that file reports with the SEC, the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The implementation of this ASU will not materially impact the consolidated financial statements. Certain fair value disclosures will be revised to comply with this ASU.

ASU No. 2019-10, Financial Instruments —Credit Losses (Topic 326), Derivatives and Hedging (Topic 815), and Leases (Topic 842). ASU 2019-10 defers the effective dates related to (1) ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (Credit Losses), (2) ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities (Hedging) and (3) ASU 2016-02, Leases (Topic 842) (Leases) for non-SEC filers. The ASU amends the effective date for SEC filers for ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment to periods beginning after December 15, 2019, aligning it with the effective date for Credit Losses. The impact of this ASU alleviates step 2 of the goodwill impairment test effective January 1, 2020. The implementation of this ASU will not materially impact the consolidated financial statements or disclosures. The effective date of this ASU was November 15, 2019.

ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. ASU 2019-12 simplifies the accounting for income taxes by eliminating some exceptions to the general approach in Accounting Standards Codification (ASC) 740, Income Taxes. It also clarifies certain aspects of the existing guidance to promote more consistent application, among other things. The amendments in the update are effective for fiscal years beginning after December 15, 2020, including interim periods within those fiscal years. The Company is evaluating the impact of this ASU on the consolidated financial statements and disclosures.

Loans Placed on Nonaccrual Status

Fair Value of Financial Instruments

Derivatives

Securities Available for Sale

Mortgage Servicing Rights ("MSR")

The carrying amounts of the MSRs equal fair value and are valued using a discounted cash flow valuation technique.

Fair Values of Assets Recorded on a Recurring Basis for which the Fair Value Option has been Elected

A hierarchy for fair value has been established which categorizes the valuation techniques into three levels used to measure fair value. The three levels are as follows:

Level 1 - Fair value is based on unadjusted quoted prices in active markets for identical assets or liabilities.

•Quoted prices for similar, but not identical, assets or liabilities in active markets;

•Quoted prices for identical or similar assets or liabilities in markets that are not active;


•	Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates;

•Other inputs derived from or corroborated by observable market inputs.

The following methodologies were used to measure the fair value of financial assets valued on a recurring basis for which the fair value option was elected:

Securities at Fair Value through Income

Loans Held for Sale

Loans Held for Investment

Fair Value of Assets Recorded on a Nonrecurring Basis

Equity Securities without Readily Determinable Fair Values

Government National Mortgage Association Repurchase Asset

Collateral Dependent Impaired Loans

Non-Financial Assets

Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted



(Dollars in thousands, except per share amounts)	Years Ended December 31,
Basic earnings per common share	2019		2018		2017
Net income	$	53,882	$	51,605	$	14,669
Less: Dividends to preferred stock ⁽¹⁾	—		1,923		4,461
Net income allocated to participating stockholders ^{(1) (2)}	—		1,029		377
Net income available to common stockholders ⁽³⁾	$	53,882	$	48,653	$	9,831
Weighted average common shares outstanding	23,470,746		21,995,990		19,418,278
Basic earnings per common share	$	2.30	$	2.21	$	0.51
Diluted earnings per common share
Diluted earnings applicable to common stockholders ⁽³⁾	$	53,882	$	48,819	$	9,861
Weighted average diluted common shares outstanding:
Weighted average common shares outstanding	23,470,746		21,995,990		19,418,278
Dilutive effect of common stock options	203,319		198,439		216,134
Weighted average diluted common shares outstanding	23,674,065		22,194,429		19,634,412
Diluted earnings per common share	$	2.28	$	2.20	$	0.50

____________________________

⁽¹⁾


⁽²⁾	The average participating share count for the calculation of earnings per share for the year ended December 31, 2018, includes an allocation for Series D preferred stockholders, which were converted to common stock during the quarter ended June 30, 2018.

⁽³⁾

Securities (Tables)

12 Months Ended

Dec. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Summary of Amortized Cost and Estimated Fair Value of Securities



(Dollars in thousands) December 31, 2019	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value
Available for sale:
State and municipal securities	$	96,180	$	3,039	$	(35	)	$	99,184
Corporate bonds	16,037		780		—			16,817
U.S. government and agency securities	5,063		183		(8		)	5,238
Commercial mortgage-backed securities	11,882		262		—			12,144
Residential mortgage-backed securities	204,650		3,105		(249		)	207,506
Commercial collateralized mortgage obligations	4,321		73		—			4,394
Residential collateralized mortgage obligations	154,925		1,186		(324		)	155,787
Total	$	493,058	$	8,628	$	(616	)	$	501,070
Held to maturity:
State and municipal securities	$	28,620	$	903	$	—		$	29,523
Securities carried at fair value through income:
State and municipal securities⁽¹⁾	$	11,070	$	—	$	—		$	11,513

December 31, 2018
Available for sale:
State and municipal securities	$	99,780	$	1,266	$	(163	)	$	100,883
Corporate bonds	10,997		102		(65		)	11,034
U.S. government and agency securities	61,122		82		(54		)	61,150
Commercial mortgage-backed securities	16,672		94		—			16,766
Residential mortgage-backed securities	188,058		417		(2,160		)	186,315
Residential collateralized mortgage obligations	202,422		315		(3,241		)	199,496
Total	$	579,051	$	2,276	$	(5,683	)	$	575,644
Held to maturity:
State and municipal securities	$	19,169	$	—	$	(33	)	$	19,136
Securities carried at fair value through income:
State and municipal securities⁽¹⁾	$	11,503	$	—	$	—		$	11,361

____________________________

⁽¹⁾

Securities carried at fair value through income have no unrealized gains or losses at the balance sheet date as all changes in value have been recognized in the consolidated statements of income. See Note 5 - Fair Value of Financial Instruments for more information.

Schedule of Securities with Unrealized Loss



(Dollars in thousands)	Less than 12 Months					12 Months or More					Total
December 31, 2019	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
Available for sale:
State and municipal securities	$	6,996	$	(35	)	$	—	$	—		$	6,996	$	(35	)
U.S. government and agency securities	—		—			663		(8		)	663		(8		)
Residential mortgage-backed securities	29,184		(151		)	14,917		(98		)	44,101		(249		)
Residential collateralized mortgage obligations	20,266		(118		)	24,275		(206		)	44,541		(324		)
Total	$	56,446	$	(304	)	$	39,855	$	(312	)	$	96,301	$	(616	)

December 31, 2018
Available for sale:
State and municipal securities	$	13,101	$	(50	)	$	8,463	$	(113	)	$	21,564	$	(163	)
Corporate bonds	7,932		(65		)	—		—			7,932		(65		)
U.S. government and agency securities	56,271		(54		)	—		—			56,271		(54		)
Residential mortgage-backed securities	18,836		(65		)	77,471		(2,095		)	96,307		(2,160		)
Residential collateralized mortgage obligations	14,711		(79		)	120,601		(3,162		)	135,312		(3,241		)
Total	$	110,851	$	(313	)	$	206,535	$	(5,370	)	$	317,386	$	(5,683	)
Held to maturity:
State and municipal securities	$	13,921	$	(33	)	$	—	$	—		$	13,921	$	(33	)

Proceeds from Sales of Securities Available for Sale and Gross Gains

Proceeds from sales of securities available for sale and gross gains for the years ended December 31, 2019 and 2018. There were no security sales during the year ended December 31, 2017.



	December 31,
(Dollars in thousands)	2019			2018
Proceeds from sales	$	27,766		$	20,877
Gross realized gains	161			381
Gross realized losses	(141		)	(389		)
Tax expense (benefit) related to securities gains/losses	4			(2		)

Securities Classified by Contractual Maturity

Proceeds from sales of securities available for sale and gross gains for the years ended December 31, 2019 and 2018. There were no security sales during the year ended December 31, 2017.



	December 31,
(Dollars in thousands)	2019			2018
Proceeds from sales	$	27,766		$	20,877
Gross realized gains	161			381
Gross realized losses	(141		)	(389		)
Tax expense (benefit) related to securities gains/losses	4			(2		)



(Dollars in thousands)	Held to Maturity				Available for Sale
December 31, 2019	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due in one year or less	$	—	$	—	$	3,998	$	4,020
Due after one year through five years	13,415		13,498		46,610		48,698
Due after five years through ten years	15,205		16,025		50,419		52,176
Due after ten years	—		—		16,253		16,345
Commercial mortgage-backed securities	—		—		11,882		12,144
Residential mortgage-backed securities	—		—		204,650		207,506
Commercial collateralized mortgage obligations	—		—		4,321		4,394
Residential collateralized mortgage obligations	—		—		154,925		155,787
Total	$	28,620	$	29,523	$	493,058	$	501,070

Securities Pledged as Collateral

The following table presents carrying amounts of securities pledged as collateral for deposits and repurchase agreements for the period ends presented.



	December 31,
(Dollars in thousands)	2019		2018
Carrying value of securities pledged to secure public deposits	$	285,552	$	364,055
Carrying value of securities pledged to repurchase agreements	20,356		48,847

Loans (Tables)

12 Months Ended

Dec. 31, 2019

Receivables [Abstract]

Schedule of Loans

Loans consist of the following:



	December 31,
(Dollars in thousands)	2019		2018
Loans held for sale	$	64,837	$	52,210
Loans held for investment:
Loans secured by real estate:
Commercial real estate	$	1,296,847	$	1,228,402
Construction/land/land development	517,688		429,660
Residential real estate	689,555		629,714
Total real estate	2,504,090		2,287,776
Commercial and industrial	1,343,475		1,272,566
Mortgage warehouse lines of credit	274,659		207,871
Consumer	20,971		20,892
Total loans held for investment⁽¹⁾	4,143,195		3,789,105
Less: Allowance for loan losses	37,520		34,203
Net loans held for investment	$	4,105,675	$	3,754,902

____________________________

⁽¹⁾

Includes net deferred loan fees of $3.6 million and $3.2 million at December 31, 2019 and 2018, respectively.

Recorded Investment in Loans by Credit Quality Indicator

The following is a summary description of the Company's internal risk ratings:



• Pass (1-6)	Loans within this risk rating are further categorized as follows:
Minimal risk (1)	Well-collateralized by cash equivalent instruments held by the Bank.
Moderate risk (2)	Borrowers with excellent asset quality and liquidity. Borrowers' capitalization and liquidity exceed industry norms. Borrowers in this category have significant levels of liquid assets and have a low level of leverage.
Better than average risk (3)	Borrowers with strong financial strength and excellent liquidity that consistently demonstrate strong operating performance. Borrowers in this category generally have a sizable net worth that can be converted into liquid assets within 12 months.
Average risk (4)	Borrowers with sound credit quality and financial performance, including liquidity. Borrowers are supported by sufficient cash flow coverage generated through operations across the full business cycle.
Marginally acceptable risk (5)	Loans generally meet minimum requirements for an acceptable loan in accordance with lending policy, but possess one or more attributes that cause the overall risk profile to be higher than the majority of newly approved loans.
Watch (6)	A passing loan with one or more factors that identify a potential weakness in the overall ability of the borrower to repay the loan. These weaknesses are generally mitigated by other factors that reduce the risk of delinquency or loss.
• Special Mention (7)	This grade is intended to be temporary and includes borrowers whose credit quality have deteriorated and is at risk of further decline.
• Substandard (8)	This grade includes "Substandard" loans under regulatory guidelines. Substandard loans exhibit a well-defined weakness that jeopardizes debt repayment in accordance with contractual agreements, even though the loan may be performing. These obligations are characterized by the distinct possibility that a loss may be incurred if these weaknesses are not corrected and repayment may be dependent upon collateral liquidation or secondary source of repayment.
• Doubtful (9)	This grade includes "Doubtful" loans under regulatory guidelines. Such loans are placed on nonaccrual status and repayment may be dependent upon collateral with no readily determinable valuation or valuations that are highly subjective in nature. Repayment for these loans is considered improbable based on currently existing facts and circumstances.
• Loss (0)	This grade includes "Loss" loans under regulatory guidelines. Loss loans are charged-off or written down when repayment is not expected.

Loans held for investment by credit quality indicator at December 31, 2019 and 2018, were as follows:



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	Pass		Special Mention		Substandard		Doubtful		Loss		Total
Commercial real estate	$	1,269,493	$	12,479	$	14,875	$	—	$	—	$	1,296,847
Construction/land/land development	512,901		149		4,638		—		—		517,688
Residential real estate	680,046		1,558		7,951		—		—		689,555
Total real estate	2,462,440		14,186		27,464		—		—		2,504,090
Commercial and industrial	1,277,564		28,478		37,433		—		—		1,343,475
Mortgage warehouse lines of credit	274,659		—		—		—		—		274,659
Consumer	20,808		—		163		—		—		20,971
Total loans held for investment	$	4,035,471	$	42,664	$	65,060	$	—	$	—	$	4,143,195



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	Pass		Special Mention		Substandard		Doubtful		Loss		Total
Commercial real estate	$	1,206,194	$	3,101	$	19,107	$	—	$	—	$	1,228,402
Construction/land/land development	426,770		157		2,733		—		—		429,660
Residential real estate	617,996		1,142		10,576		—		—		629,714
Total real estate	2,250,960		4,400		32,416		—		—		2,287,776
Commercial and industrial	1,190,718		34,964		46,884		—		—		1,272,566
Mortgage warehouse lines of credit	207,871		—		—		—		—		207,871
Consumer	20,712		—		180		—		—		20,892
Total loans held for investment	$	3,670,261	$	39,364	$	79,480	$	—	$	—	$	3,789,105

Loan Portfolio Aging Analysis

The following tables present the Company's loan portfolio aging analysis at the dates indicated:



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	30-59 Days Past Due		60-89 Days Past Due		Loans Past Due 90 Days or More		Total Past Due		Current Loans		Total Loans Receivable		Accruing Loans 90 or More Days Past Due
Commercial real estate	$	917	$	—	$	5,891	$	6,808	$	1,290,039	$	1,296,847	$	—
Construction/land/land development	3,569		133		56		3,758		513,930		517,688		—
Residential real estate	2,174		1,918		913		5,005		684,550		689,555		—
Total real estate	6,660		2,051		6,860		15,571		2,488,519		2,504,090		—
Commercial and industrial	1,588		1,037		11,545		14,170		1,329,305		1,343,475		—
Mortgage warehouse lines of credit	—		—		—		—		274,659		274,659		—
Consumer	164		35		40		239		20,732		20,971		—
Total loans held for investment	$	8,412	$	3,123	$	18,445	$	29,980	$	4,113,215	$	4,143,195	$	—



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	30-59 Days Past Due		60-89 Days Past Due		Loans Past Due 90 Days or More		Total Past Due		Current Loans		Total Loans Receivable		Accruing Loans 90 or More Days Past Due
Commercial real estate	$	458	$	1,409	$	7,224	$	9,091	$	1,219,311	$	1,228,402	$	—
Construction/land/land development	2,657		—		435		3,092		426,568		429,660		—
Residential real estate	2,137		527		4,149		6,813		622,901		629,714		—
Total real estate	5,252		1,936		11,808		18,996		2,268,780		2,287,776		—
Commercial and industrial	276		8,263		6,157		14,696		1,257,870		1,272,566		—
Mortgage warehouse lines of credit	—		—		—		—		207,871		207,871		—
Consumer	383		8		2		393		20,499		20,892		—
Total loans held for investment	$	5,911	$	10,207	$	17,967	$	34,085	$	3,755,020	$	3,789,105	$	—

Allowance for Loan Losses by Portfolio Segment



(Dollars in thousands)	Year Ended December 31, 2019
Loans secured by real estate:	Beginning Balance		Charge-offs		Recoveries		Provision (Benefit)⁽¹⁾			Ending Balance
Commercial real estate	$	8,999	$	1,420	$	341	$	2,093		$	10,013
Construction/land/land development	3,331		38		40		378			3,711
Residential real estate	5,705		265		185		707			6,332
Commercial and industrial	15,616		8,231		3,627		5,948			16,960
Mortgage warehouse lines of credit	316		29		—		(25		)	262
Consumer	236		148		48		106			242
Total	$	34,203	$	10,131	$	4,241	$	9,207		$	37,520

____________________________


⁽¹⁾	The $9.6 provision for credit losses on the consolidated statements of income includes a $9.2 million net loan loss provision and a $361,000 provision for off-balance sheet commitments for the year ended December 31, 2019.



(Dollars in thousands)	Year Ended December 31, 2018
Loans secured by real estate:	Beginning Balance		Charge-offs		Recoveries		Provision (Benefit)⁽¹⁾			Ending Balance
Commercial real estate	$	8,998	$	1,300	$	226	$	1,075		$	8,999
Construction/land/land development	2,950		228		6		603			3,331
Residential real estate	5,807		407		133		172			5,705
Commercial and industrial	18,831		5,068		2,206		(353		)	15,616
Mortgage warehouse lines of credit	214		—		—		102			316
Consumer	283		121		92		(18		)	236
Total	$	37,083	$	7,124	$	2,663	$	1,581		$	34,203

____________________________


⁽¹⁾	The $1.0 million provision for credit losses on the consolidated statements of income includes a $1.6 million net loan loss provision and an $567,000 release of provision for off-balance sheet commitments for the year ended December 31, 2018.



(Dollars in thousands)	Year Ended December 31, 2017
Loans secured by real estate:	Beginning Balance		Charge-offs		Recoveries		Provision⁽¹⁾		Ending Balance
Commercial real estate	$	8,718	$	463	$	93	$	650	$	8,998
Construction/land/land development	2,805		3		5		143		2,950
Residential real estate	5,003		1,446		125		2,125		5,807
Commercial and industrial	33,590		21,767		1,918		5,090		18,831
Mortgage warehouse lines of credit	139		—		—		75		214
Consumer	276		198		69		136		283
Total	$	50,531	$	23,877	$	2,210	$	8,219	$	37,083

____________________________


⁽¹⁾	The $8.3 million provision for credit losses on the consolidated statements of income includes a $8.2 million loan loss provision and a $117,000 provision for off-balance sheet commitments for the year ended December 31, 2017.

Loans Receivable by Method of Impairment Evaluation

The following tables present the balance of loans receivable by method of impairment evaluation at the dates indicated:



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	Period End Allowance Allocated to Loans Individually Evaluated for Impairment		Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		Period End Loan Balance Individually Evaluated for Impairment		Period End Loan Balance Collectively Evaluated for Impairment ⁽¹⁾
Commercial real estate	$	3	$	10,010	$	7,446	$	1,271,731
Construction/land/land development	3		3,708		4,329		513,359
Residential real estate	21		6,311		4,937		684,618
Commercial and industrial	168		16,792		15,662		1,327,813
Mortgage warehouse lines of credit	—		262		—		274,659
Consumer	4		238		100		20,871
Total	$	199	$	37,321	$	32,474	$	4,093,051

____________________________


⁽¹⁾	Excludes $17.7 million of commercial real estate loans at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information.



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	Period End Allowance Allocated to Loans Individually Evaluated for Impairment		Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		Period End Loan Balance Individually Evaluated for Impairment		Period End Loan Balance Collectively Evaluated for Impairment ⁽¹⁾
Commercial real estate	$	5	$	8,994	$	8,773	$	1,201,058
Construction/land/land development	19		3,312		1,017		428,643
Residential real estate	68		5,637		6,876		622,838
Commercial and industrial	255		15,361		16,428		1,256,138
Mortgage warehouse lines of credit	—		316		—		207,871
Consumer	19		217		184		20,708
Total	$	366	$	33,837	$	33,278	$	3,737,256

____________________________

⁽¹⁾

Excludes $18.6 million of commercial real estate loans at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information.

Impaired Loans

The following tables present impaired loans at the dates indicated. No mortgage warehouse lines of credit were impaired at either December 31, 2019 or 2018.



(Dollars in thousands)	December 31, 2019
Loans secured by real estate:	Unpaid Contractual Principal Balance		Recorded Investment with no Allowance		Recorded Investment with an Allowance		Total Recorded Investment		Allocation of Allowance for Loan Losses
Commercial real estate	$	10,788	$	7,375	$	71	$	7,446	$	3
Construction/land/land development	4,692		4,256		73		4,329		3
Residential real estate	5,846		4,407		530		4,937		21
Total real estate	21,326		16,038		674		16,712		27
Commercial and industrial	22,857		14,385		1,277		15,662		168
Consumer	110		—		100		100		4
Total impaired loans	$	44,293	$	30,423	$	2,051	$	32,474	$	199



(Dollars in thousands)	December 31, 2018
Loans secured by real estate:	Unpaid Contractual Principal Balance		Recorded Investment with no Allowance		Recorded Investment with an Allowance		Total Recorded Investment		Allocation of Allowance for Loan Losses
Commercial real estate	$	10,894	$	8,725	$	48	$	8,773	$	5
Construction/land/land development	1,329		838		179		1,017		19
Residential real estate	7,815		6,092		784		6,876		68
Total real estate	20,038		15,655		1,011		16,666		92
Commercial and industrial	18,883		15,806		622		16,428		255
Consumer	202		—		184		184		19
Total impaired loans	$	39,123	$	31,461	$	1,817	$	33,278	$	366

The average recorded investment and interest income recognized on impaired loans while classified as impaired for the years ended December 31, 2019, 2018 and 2017, were as follows:



	Years Ended December 31,
(Dollars in thousands)	2019				2018				2017
Loans secured by real estate:	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Commercial real estate	$	8,842	$	21	$	9,901	$	67	$	7,046	$	165
Construction/land/land development	1,266		8		1,401		16		1,053		10
Residential real estate	5,090		22		7,529		60		9,398		75
Total real estate	15,198		51		18,831		143		17,497		250
Commercial and industrial	16,449		49		14,814		199		40,316		375
Consumer	150		3		251		5		244		7
Total impaired loans	$	31,797	$	103	$	33,896	$	347	$	58,057	$	632

Non-performing (Nonaccrual) Loans Held for Investment

Non-performing (nonaccrual) loans held for investment were as follows:



(Dollars in thousands)	December 31,
Loans secured by real estate:	2019		2018
Commercial real estate	$	6,994	$	8,281
Construction/land/land development	4,337		935
Residential real estate	5,132		6,668
Total real estate	16,463		15,884
Commercial and industrial	14,520		15,792
Consumer	163		180
Total nonaccrual loans	$	31,146	$	31,856

Loans Classified as Troubled Debt Restructurings (TDRs)

The following is a summary of loans classified as TDRs.



(Dollars in thousands)	December 31,
TDRs	2019		2018
Nonaccrual TDRs	$	6,609	$	5,793
Performing TDRs	1,843		2,054
Total	$	8,452	$	7,847

The following tables present the pre-modification balance of TDR modifications that occurred during the periods indicated and the ending balances by concession type as of each period presented.



(Dollars in thousands)	Year Ended December 31, 2019
Loans secured by real estate:	Number of Loans Restructured	Pre-Modification Recorded Balance		Term Concessions		Interest Rate Concessions		Combination		Total Modifications
Construction/land/land development	1	$	361	$	—	$	—	$	343	$	343
Residential real estate	2	2,516		—		—		2,410		2,410
Total real estate	3	2,877		—		—		2,753		2,753
Commercial and industrial	5	1,314		852		—		—		852
Consumer	1	11		9		—		—		9
Total	9	$	4,202	$	861	$	—	$	2,753	$	3,614



(Dollars in thousands)	Year Ended December 31, 2018
Loans secured by real estate:	Number of Loans Restructured	Pre-Modification Recorded Balance		Term Concessions		Interest Rate Concessions		Combination		Total Modifications
Commercial real estate	1	$	252	$	150	$	—	$	—	$	150
Residential real estate	6	428		48		19		331		398
Total real estate	7	680		198		19		331		548
Commercial and industrial	3	198		180		—		14		194
Consumer	1	33		—		—		29		29
Total	11	$	911	$	378	$	19	$	374	$	771



(Dollars in thousands)	Year Ended December 31, 2017
Loans secured by real estate:	Number of Loans Restructured	Pre-Modification Recorded Balance		Term Concessions		Interest Rate Concessions		Combination		Total Modifications
Commercial real estate	4	$	2,071	$	2,057	$	—	$	—	$	2,057
Residential real estate	3	133		38		—		210		248
Total real estate	7	2,204		2,095		—		210		2,305
Commercial and industrial	8	10,799		9,882		—		40		9,922
Consumer	1	49		45		—		—		45
Total	16	$	13,052	$	12,022	$	—	$	250	$	12,272

Fair Value of Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities Recorded on a Recurring Basis



	December 31, 2019
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
State and municipal securities	$	—	$	61,011		$	38,173	$	99,184
Corporate bonds	—		16,817			—		16,817
U.S. government agency securities	—		5,238			—		5,238
Commercial mortgage-backed securities	—		12,144			—		12,144
Residential mortgage-backed securities	—		207,506			—		207,506
Commercial collateralized mortgage obligations	—		4,394			—		4,394
Residential collateralized mortgage obligations	—		155,787			—		155,787
Securities available for sale	—		462,897			38,173		501,070
Securities carried at fair value through income	—		—			11,513		11,513
Loans held for sale	—		36,977			—		36,977
Loans at fair value	—		—			17,670		17,670
Mortgage servicing rights	—		—			20,697		20,697
Other assets - derivatives	—		9,384			—		9,384
Total recurring fair value measurements - assets	$	—	$	509,258		$	88,053	$	597,311

Other liabilities - derivatives	$	—	$	(9,488	)	$	—	$	(9,488	)
Total recurring fair value measurements - liabilities	$	—	$	(9,488	)	$	—	$	(9,488	)



	December 31, 2018
(Dollars in thousands)	Level 1		Level 2			Level 3		Total
State and municipal securities	$	—	$	61,522		$	39,361	$	100,883
Corporate bonds	—		11,034			—		11,034
U.S. treasury securities	55,515		—			—		55,515
U.S. government agency securities	—		5,635			—		5,635
Commercial mortgage-backed securities	—		16,766			—		16,766
Residential mortgage-backed securities	—		186,315			—		186,315
Residential collateralized mortgage obligations	—		199,496			—		199,496
Securities available for sale	55,515		480,768			39,361		575,644
Securities carried at fair value through income	—		—			11,361		11,361
Loans held for sale	—		21,562			—		21,562
Loans at fair value	—		—			18,571		18,571
Mortgage servicing rights	—		—			25,114		25,114
Other assets - derivatives	—		3,563			—		3,563
Total recurring fair value measurements - assets	$	55,515	$	505,893		$	94,407	$	655,815

Other liabilities - derivatives	$	—	$	(2,846	)	$	—	$	(2,846	)
Total recurring fair value measurements - liabilities	$	—	$	(2,846	)	$	—	$	(2,846	)

Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis

The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the years ended December 31, 2019 and 2018, are summarized as follows:



(Dollars in thousands)	Loans at Fair Value			MSRs			Securities Available for Sale			Securities at Fair Value Through Income
Balance at January 1, 2019	$	18,571		$	25,114		$	39,361		$	11,361
Gain (loss) recognized in earnings:
Mortgage banking revenue⁽¹⁾	—			(7,012		)	—			—
Other noninterest income	124			—			—			586
Gain (loss) recognized in AOCI	—			—			1,673			—
Purchases, issuances, sales and settlements:
Originations	—			2,595			—			—
Sales	—			—			(2,861		)	—
Settlements	(1,025		)	—			—			(434		)
Balance at December 31, 2019	$	17,670		$	20,697		$	38,173		$	11,513

Balance at January 1, 2018	$	26,611		$	24,182		$	42,015		$	12,033
Losses recognized in earnings:
Mortgage banking revenue⁽¹⁾	—			(963		)	—			—
Other noninterest income	(389		)	—			—			(258		)
Loss recognized in AOCI	—			—			(597		)	—
Purchases, issuances, sales, and settlements:
Originations	—			1,895			—			—
Purchases	—			—			259			—
Settlements	(7,651		)	—			(2,316		)	(414		)
Balance at December 31, 2018	$	18,571		$	25,114		$	39,361		$	11,361

____________________________

⁽¹⁾

Mortgage banking revenue includes changes in fair value due to market changes and run-off.

Significant Assumptions Used to Value Mortgage Servicing Rights

The significant assumptions used to value MSRs were as follows:



	December 31,
	2019		2018
Prepayment speed	12.46	%	9.90	%
Discount rate	9.55		10.42

Difference Between Fair Value and the Unpaid Principal Balance for Financial Instruments for which the Fair Value Option has been Elected and Classification in Income Statement

The following tables summarize the difference between the fair value and the unpaid principal balance for financial instruments for which the fair value option has been elected:



	December 31, 2019
(Dollars in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal Balance		Difference
Loans held for sale⁽¹⁾	$	36,977	$	36,037	$	940
Commercial real estate loans held for investment⁽²⁾	17,670		17,366		304
Securities carried at fair value through income	11,513		11,070		443
Total	$	66,160	$	64,473	$	1,687

____________________________


⁽¹⁾	A total of $927,000 of loans held for sale were designated as nonaccrual or 90 days or more past due at December 31, 2019. Of this balance, the Company had guarantees receivable from U.S. Government agencies totaling $709,000.


⁽²⁾	There were no commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or 90 days or more past due at December 31, 2019.



	December 31, 2018
(Dollars in thousands)	Aggregate Fair Value		Aggregate Unpaid Principal Balance		Difference
Loans held for sale⁽¹⁾	$	21,562	$	21,173	$	389
Commercial real estate loans held for investment⁽²⁾	18,571		18,391		180
Securities carried at fair value through income	11,361		11,503		(142		)
Total	$	51,494	$	51,067	$	427

____________________________


⁽¹⁾	A total of $741,000 of loans held for sale were designated as nonaccrual or 90 days or more past due at December 31, 2018. Of this balance, the Company had guarantees receivable from U.S. government agencies totaling $582,000.


⁽²⁾	There were no commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or 90 days or more past due at December 31, 2018.

Changes in the fair value of assets for which the Company elected the fair value option are classified in the consolidated statement of income line items reflected in the following table:



(Dollars in thousands)	Years Ended December 31,
Changes in fair value included in noninterest income:	2019		2018			2017
Mortgage banking revenue	$	550	$	(163	)	$	477
Other income:
Loans at fair value held for investment	124		(389		)	(712		)
Securities carried at fair value through income	586		(258		)	(97		)
Total impact on other income	710		(647		)	(809		)
Total fair value option impact on noninterest income⁽¹⁾	$	1,260	$	(810	)	$	(332	)

____________________________

⁽¹⁾

The fair value option impact on noninterest income is offset by the derivative gain/loss recognized in noninterest income. Please see Note 9 - Mortgage Banking for more detail.

Carrying Value and Estimated Fair Value of Financial Instruments Not Measured at Fair Value

The carrying value and estimated fair values of financial instruments not recorded at fair value are as follows:



(Dollars in thousands)	December 31,
Financial assets:	2019				2018
Level 1 inputs:	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
Cash and cash equivalents	$	291,518	$	291,518	$	116,678	$	116,678
Level 2 inputs:
Non-marketable equity securities held in other financial institutions	39,808		39,808		42,149		42,149
Accrued interest and loan fees receivable	16,430		16,430		16,454		16,454
Level 3 inputs:
Securities held to maturity	28,620		29,523		19,169		19,136
Loans held for investment, net⁽¹⁾	4,088,005		3,940,347		3,736,331		3,605,142
Financial liabilities:
Level 2 inputs:
Deposits	4,228,612		4,081,430		3,783,138		3,537,283
FHLB advances and other borrowings	417,190		425,318		445,224		444,286
Junior subordinated debentures	9,671		10,717		9,644		10,723
Accrued interest payable	2,822		2,822		2,679		2,679

____________________________

⁽¹⁾

Loans held for investment, net does not include loans for which the fair value option had been elected at December 31, 2019 or 2018, as these loans are carried at fair value on a recurring basis.

Premises and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Major Classifications of Premises and Equipment

Major classifications of premises and equipment are summarized below:



	December 31,
(Dollars in thousands)	2019			2018
Land, buildings and improvements	$	83,161		$	82,114
Furniture, fixtures and equipment	27,911			24,946
Leasehold improvements	15,790			11,345
Construction in process	407			1,715
	127,269			120,120
Accumulated depreciation	(46,812		)	(45,106		)
Total	$	80,457		$	75,014

Leases (Tables)

12 Months Ended

Dec. 31, 2019

Leases [Abstract]

Balance Sheet Details

The balance sheet details and components of the Company's lease expense were as follows:



(Dollars in thousands)	December 31, 2019
Operating lease right of use assets (included in Accrued interest receivable and other assets)	$	24,013
Operating lease liabilities (included in Accrued expenses and other liabilities)	25,810
Finance lease liabilities (included in Accrued expenses and other liabilities)	248

Weighted average remaining lease term (years) - operating leases	9.58
Weighted average discount rate - operating leases	3.49		%

Components of Lease Expense and Supplemental Cash Flow Related to Leases



(Dollars in thousands)	Year Ended December 31, 2019
Lease expense:
Operating lease expense	$	4,716
Other lease expense	245
Total lease expense	$	4,961
Right of use assets obtained in exchange for new operating lease liabilities	$	1,256

Supplemental cash flow related to leases was as follows:



	Year Ended December 31, 2019
Cash paid for operating leases	$	4,796

Maturities of Operating Lease Liabilities

Maturities of operating lease liabilities at December 31, 2019, were as follows:



	December 31, 2019
Year 1	$	4,703
Year 2	4,079
Year 3	3,826
Year 4	3,402
Year 5	2,349
Year 6 and thereafter	12,513
Total lease payments	30,872
Less: Imputed interest	5,062
Total lease obligations	$	25,810

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Components of Goodwill and Other Intangible Assets

The components of the Company's goodwill and other intangible assets are as follows:



(Dollars in thousands) December 31, 2019	Gross		Accumulated Amortization			Net
Goodwill	$	26,741	$	—		$	26,741
Other intangible assets:
Core deposit intangibles	1,260		(1,091		)	169
Relationship based intangibles	7,304		(2,781		)	4,523
Tradename	186		(124		)	62
Non-compete	270		(225		)	45
Total	$	35,761	$	(4,221	)	$	31,540
December 31, 2018
Goodwill	$	26,741	$	—		$	26,741
Other intangible assets:
Core deposit intangibles	1,260		(945		)	315
Relationship based intangibles	7,304		(1,819		)	5,485
Tradename	186		(46		)	140
Non-compete	270		(90		)	180
Total	$	35,761	$	(2,900	)	$	32,861

Estimated Future Amortization Expense for Intangible Assets

Estimated future amortization expense for intangible assets remaining at December 31, 2019, was as follows:



(Dollars in thousands) Years Ended December 31,
2020	$	1,060
2021	844
2022	689
2023	582
2024	488
Thereafter	1,136
Total	$	4,799

Mortgage Banking (Tables)

12 Months Ended

Dec. 31, 2019

Mortgage Banking [Abstract]

Mortgage Banking Operations

The following table presents the Company's revenue from mortgage banking operations:



(Dollars in thousands)	Years Ended December 31,
Mortgage banking revenue	2019			2018			2017
Origination	$	1,000		$	854		$	1,281
Gain on sale of loans held for sale	6,943			6,403			11,615
Servicing	6,547			7,081			7,872
Total gross mortgage revenue	14,490			14,338			20,768
Mortgage derivatives gain (loss)	979			(725		)	(205		)
MSR change due to payoffs and paydowns	(4,087		)	(3,618		)	(4,005		)
MSR and hedge fair value adjustment	927			(400		)	(249		)
Gain (loss) on MSR sale⁽¹⁾	—			25			(503		)
Mortgage banking revenue	$	12,309		$	9,620		$	15,806

____________________________


⁽¹⁾	Amount shown during the year ended December 31, 2018, reflects final settlement on a loan servicing portfolio sold during the year ended December 31, 2017.

Schedule of Activity in Mortgages Servicing Rights (MSRs)

Activity in MSRs was as follows:



	Years Ended December 31,
(Dollars in thousands)	2019			2018			2017
Balance at beginning of period	$	25,114		$	24,182		$	29,385
Origination of servicing rights	2,595			1,895			3,061
Change in fair value, including amortization, net	(7,012		)	(963		)	(6,014		)
Sale of servicing rights	—			—			(2,250		)
Balance at end of period	$	20,697		$	25,114		$	24,182

Deposits (Tables)

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Summary of Deposit Balances

Deposit balances are summarized as follows:



	December 31,
(Dollars in thousands)	2019		2018
Noninterest-bearing demand	$	1,077,706	$	951,015
Interest bearing demand	776,037		738,725
Money market	1,277,053		815,997
Brokered ⁽¹⁾	152,556		332,341
Savings	154,450		148,508
Time deposits ⁽¹⁾	790,810		796,552
Total Deposits	$	4,228,612	$	3,783,138

____________________________


⁽¹⁾	There were no brokered time deposits at December 31, 2019, and $7.9 million time deposits included in the brokered category at December 31, 2018.

Maturities of Time Deposits

Maturities of time deposits, at December 31, 2019, are as follows:



(Dollars in thousands)
Year Ended December 31,
2020	$	560,177
2021	142,889
2022	45,210
2023	18,032
2024	24,502
Total	$	790,810

Borrowings (Tables)

12 Months Ended

Dec. 31, 2019

Debt Disclosure [Abstract]

Summary of Borrowed Funds

Borrowed funds are summarized as follows:



	December 31,
(Dollars in thousands)	2019		2018
Overnight repurchase agreements with depositors	$	16,717	$	40,314
Short-term FHLB advances ⁽¹⁾	100,000		100,000
GNMA repurchase liability	27,860		30,649
Long-term FHLB advances ⁽²⁾	272,613		274,261
Total FHLB advances and other borrowings	$	417,190	$	445,224
Junior subordinated debentures, net	$	9,671	$	9,644

__________________________


⁽¹⁾	Short-term FHLB advances at December 31, 2019, carried a fixed interest rate of 1.35% and matured on January 2, 2020, and short-term FHLB advances at December 31, 2018, carried a fixed interest rate of 2.70%, and matured on January 2, 2019.

⁽²⁾

Includes a FHLB advance of $250.0 million at both December 31, 2019 and 2018, callable quarterly with a final maturity in 2033, carrying a rate of 1.65%.

Schedule of Maturities of Long-term Advances

Scheduled maturities of long-term advances from the FHLB at December 31, 2019, are as follows:



(Dollars in thousands)
Years Ended December 31,
2020	$	1,070
2021	1,117
2022	2,479
2023	4,253
2024	3,142
Thereafter ⁽¹⁾	260,552
Total	$	272,613

__________________________

⁽¹⁾

Includes a FHLB advances totaling $250.0 million callable quarterly with a final maturity in 2033, carrying a rate of 1.65%.

Summary of Terms of Current Debentures

The following table is a summary of the terms of the current debentures at December 31, 2019:



(Dollars in thousands) Issuance Trust	Issuance Date	Maturity Date	Amount Outstanding		Rate Type	Current Rate		Maximum Rate
CTB Statutory Trust I	07/2001	07/2031	$	6,702	Variable ⁽¹⁾	5.23	%	12.50	%
First Louisiana Statutory Trust I	09/2006	12/2036	4,124		Variable ⁽²⁾	3.69		16.00
			$	10,826

____________________________


⁽¹⁾	The trust preferred securities reprice quarterly based on the three-month LIBOR plus 3.30%, with the last reprice date on October 29, 2019.

⁽²⁾

The trust preferred securities reprice quarterly based on the three-month LIBOR plus 1.80%, with the last reprice date on December 12, 2019.

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21475-112644

+ Details

Derivative Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Values of Derivative Instruments on the Balance Sheet



	Notional Amounts⁽¹⁾				Fair Values
(Dollars in thousands)	December 31,				December 31,
Derivatives designated as cash flow hedging instruments:	2019		2018		2019			2018
Interest rate swaps included in other (liabilities) assets	$	10,500	$	10,500	$	(101	)	$	152

Derivatives not designated as hedging instruments:
Interest rate swaps included in other assets	$	217,633	$	127,512	$	8,425		$	2,302
Interest rate swaps included in other liabilities	246,397		145,857		(9,278		)	(2,625		)
Forward commitments to purchase mortgage-backed securities included in other assets	200,000		140,000		242			709
Forward commitments to sell residential mortgage loans included in other liabilities	60,600		24,750		(109		)	(221		)
Interest rate-lock commitments on residential mortgage loans included in other assets	37,382		16,244		717			400
	$	762,012	$	454,363	$	(3	)	$	565

____________________________

⁽¹⁾

Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the consolidated balance sheets.

Weighted-average Rates Paid and Received for Interest Rate Swaps

The weighted-average rates paid and received for interest rate swaps at December 31, 2019 and 2018, were as follows:



	Weighted-Average Interest Rate
	December 31,
	2019				2018
Interest rate swaps:	Paid		Received		Paid		Received
Cash flow hedges	4.81	%	4.64	%	4.81	%	5.36	%
Non-hedging interest rate swaps - financial institution counterparties	4.93		4.13		5.02		4.67
Non-hedging interest rate swaps - customer counterparties	4.18		4.93		4.73		5.05

Gains and Losses Recognized on Derivative Instruments Not Designated as Hedging Instruments

Gains and losses recognized on derivative instruments not designated as hedging instruments are as follows:



(Dollars in thousands)	Years Ended December 31,
Derivatives not designated as hedging instruments:	2019			2018			2017
Amount of gain (loss) recognized in mortgage banking revenue ⁽¹⁾	$	3,079		$	(2,450	)	$	(259	)
Amount of (loss) gain recognized in other non-interest income	(530		)	584			707

____________________________

⁽¹⁾

Gains and losses on these instruments are largely offset by market fluctuations in mortgage servicing rights. See Note 9 - Mortgage Banking for more information on components of mortgage banking revenue.

Stock and Incentive Compensation Plans (Tables)

12 Months Ended

Dec. 31, 2019

Share-based Payment Arrangement [Abstract]

Share-based Compensation Cost Charged to Income

Share-based compensation cost charged to income for the years ended December 31, 2019, 2018 and 2017, is presented below:



	Years Ended December 31,
(Dollars in thousands)	2019		2018		2017
Restricted stock	$	2,247	$	1,462	$	1,180
Stock options⁽¹⁾	—		—		(30		)
Total stock compensation expense	$	2,247	$	1,462	$	1,150
Related tax benefits recognized in net income	$	472	$	307	$	403

____________________________

⁽¹⁾

Stock option expense for the year ended December 31, 2017, included expense reversal related to 16,638 common stock options forfeited during the period. All remaining stock options became fully vested during the first quarter of 2017, with no further expense incurred after February 2017.

Time-vested Award Activity

The following table summarizes the Company's time-vested award activity:



	Years Ended December 31,
	2019				2018				2017
	Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value
Nonvested shares, January 1,	174,407		$	35.01	61,293		$	24.61	84,019		$	24.22
Granted	37,641		32.77		151,324		37.51		35,913		25.14
Vested	(59,344	)	33.50		(36,209	)	27.70		(55,003	)	24.39
Forfeited	(3,255	)	30.21		(2,001	)	37.47		(3,636	)	24.12
Nonvested shares, December 31,	149,449		$	35.15	174,407		$	35.01	61,293		$	24.61

Stock Option Activity

The table below summarizes the status of the Company's stock options and changes during the years ended December 31, 2019, 2018 and 2017.



(Dollars in thousands, except per share amounts)	Number of Shares		Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (in years)	Aggregate Intrinsic Value⁽¹⁾
Outstanding at January 1, 2017	358,638		$	11.37	7.79	$	3,844
Exercised	(22,500	)	12.29		—	304
Forfeited and expired	(16,638	)	23.89		—	—
Outstanding at December 31, 2017	319,500		10.65		7.07	4,840
Exercised	(45,500	)	12.29		—	—
Outstanding at December 31, 2018	274,000		10.38		6.75	6,493
Exercised	(20,000	)	8.25		—	—
Outstanding at December 31, 2019	254,000		$	10.55	5.81	$	6,932
Exercisable at December 31, 2019	254,000		$	10.55	5.81	$	6,932

____________________________

⁽¹⁾

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The provision for income taxes is as follows:



(Dollars in thousands)	Years Ended December 31,
Federal income taxes:	2019			2018			2017
Current	$	14,232		$	4,562		$	715
Deferred	(2,513		)	5,658			4,644
State income taxes:
Current	1,030			638			167
Deferred	(83		)	(21		)	287
Income tax expense	$	12,666		$	10,837		$	5,813

Reconciliation of Income Tax Expense

A reconciliation of income tax expense at the statutory rate to the Company's actual income tax expense is below:



	Years Ended December 31,
	2019					2018					2017
(Dollars in thousands)	Amount			%		Amount			%		Amount			%
Income taxes computed at statutory rate	$	13,975		21.00	%	$	13,113		21.00	%	$	7,169		35.00	%
Tax exempt revenue, net of nondeductible interest	(644		)	(0.97	)	(907		)	(1.45	)	(1,629		)	(7.95	)
Low-income housing tax credits, net of amortization	(514		)	(0.77	)	(691		)	(1.11	)	(624		)	(3.05	)
Other tax credits, net of add-backs	(1,218		)	(1.83	)	(1,218		)	(1.95	)	(1,002		)	(4.89	)
Bank-owned life insurance income	(158		)	(0.24	)	(150		)	(0.24	)	(221		)	(1.08	)
State income taxes, net of federal benefit	730			1.10		469			0.75		186			0.91
Stock-based compensation	(100		)	(0.15	)	(252		)	(0.40	)	(80		)	(0.39	)
Deferred tax write-down for enacted tax rate changes	—			—		231			0.37		1,972			9.63
Other	595			0.89		242			0.38		42			0.20
Total income tax expense	$	12,666		19.03	%	$	10,837		17.35	%	$	5,813		28.38	%

Significant Components of Deferred Tax Assets and Liabilities

Significant components of deferred tax assets and liabilities are as follows:



(Dollars in thousands)	December 31,
Deferred tax assets:	2019			2018
Credit loss allowances	$	8,557		$	7,762
Deferred compensation and share-based compensation	3,698			2,471
Net operating loss carryforwards	1,245			1,238
Other	1,441			1,068
Gross deferred tax assets	14,941			12,539
Valuation allowance	(970		)	(867		)
Deferred tax assets net of valuation allowance	$	13,971		$	11,672

Deferred tax liabilities:
Basis difference in premises and equipment	$	2,669		$	1,655
Intangible assets	157			218
Mortgage servicing rights	4,472			5,426
Other	152			565
Gross deferred tax liabilities	7,450			7,864
Net deferred tax asset	$	6,521		$	3,808

Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2019

Equity [Abstract]

Schedule of Accumulated Other Comprehensive Income

Accumulated other comprehensive income ("AOCI") includes the after-tax change in unrealized gains and losses on AFS securities and cash flow hedging activities.



(Dollars in thousands)	Unrealized Gains (Losses) on AFS Securities			Unrealized Gains (Losses) on Cash Flow Hedges			Accumulated Other Comprehensive Income
Balance at January 1, 2017	$	3,505		$	(42	)	$	3,463
Net change	(2,225		)	69			(2,156		)
Balance at January 1, 2018	1,280			27			1,307
Net change	(4,157		)	88			(4,069		)
Reclassification of tax effects related to the adoption of ASU 2018-02⁽¹⁾:
Current	(293		)	17			(276		)
Deferred	569			(11		)	558
Balance at January 1, 2019	(2,601		)	121			(2,480		)
Net change	9,013			(200		)	8,813
Balance at December 31, 2019	$	6,412		$	(79	)	$	6,333

____________________________

⁽¹⁾

Capital and Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2019

Banking and Thrift [Abstract]

Actual Capital Amounts and Ratios

The actual capital amounts and ratios of the Company and Bank at December 31, 2019 and 2018, are presented in the following table:



(Dollars in thousands) December 31, 2019	Actual				Minimum Capital Required - Basel III Fully Phased-In				To be Well Capitalized Under Prompt Corrective Action Provisions
Common Equity Tier 1 Capital to Risk-Weighted Assets	Amount		Ratio		Amount		Ratio		Amount		Ratio
Origin Bancorp, Inc.	$	561,630	11.74	%	$	334,785	7.00	%	N/A		N/A
Origin Bank	551,060		11.55		333,924		7.00		$	310,072	6.50	%
Tier 1 Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	570,975		11.94		406,524		8.50		N/A		N/A
Origin Bank	551,060		11.55		405,479		8.50		381,627		8.00
Total Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	610,305		12.76		502,175		10.50		N/A		N/A
Origin Bank	590,390		12.38		500,888		10.50		477,037		10.00
Leverage Ratio
Origin Bancorp, Inc.	570,975		10.91		209,298		4.00		N/A		N/A
Origin Bank	551,060		10.56		208,774		4.00		260,968		5.00
December 31, 2018
Common Equity Tier 1 Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	519,468		11.94		304,431		7.00		N/A		N/A
Origin Bank	508,826		11.73		303,621		7.00		$	281,934	6.50	%
Tier 1 Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	528,786		12.16		369,668		8.50		N/A		N/A
Origin Bank	508,826		11.73		368,683		8.50		346,996		8.00
Total Capital to Risk-Weighted Assets
Origin Bancorp, Inc.	564,437		12.98		456,647		10.50		N/A		N/A
Origin Bank	544,477		12.55		455,430		10.50		433,743		10.00
Leverage Ratio
Origin Bancorp, Inc.	528,786		11.21		188,711		4.00		N/A		N/A
Origin Bank	508,826		10.81		188,229		4.00		235,287		5.00

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2019

Commitments and Contingencies Disclosure [Abstract]

Off-Balance Sheet Financial Instruments

These off-balance sheet financial instruments are summarized below:



	December 31,
(Dollars in thousands)	2019		2018
Commitments to extend credit	$	1,374,055	$	1,178,735
Standby letters of credit	39,344		46,860

Related Party Transactions (Tables)

12 Months Ended

Dec. 31, 2019

Loans to Executive Officers, Directors, and Their Affiliates

Loans to executive officers, directors, and their affiliates at December 31, 2019 and 2018, were as follows:



(Dollars in thousands)	2019			2018
Balance, beginning of year	$	1,328		$	9,934
Advances	450			1,775
Principal repayments	(495		)	(1,845		)
Effect of changes in composition of related parties	(190		)	(8,536		)
Balance, end of year	$	1,093		$	1,328

Commitments to extend credit	$	2,212		$	3,420

Condensed Parent Company Only Financial Statements (Tables)

12 Months Ended

Dec. 31, 2019

Condensed Financial Information Disclosure [Abstract]

Condensed Balance Sheets

Financial statements of Origin Bancorp, Inc. (parent company only) are as follows:



(Dollars in thousands)	December 31,
Condensed Balance Sheets	2019		2018
Assets
Cash and cash equivalents	$	5,909	$	5,882
Investment in affiliates/subsidiaries	593,079		543,515
Other assets	10,531		10,393
Total assets	$	609,519	$	559,790
Liabilities and Stockholders' Equity
Junior subordinated debentures	$	9,671	$	9,644
Accrued expenses and other liabilities	586		367
Total liabilities	10,257		10,011
Stockholders' Equity
Common stock	117,405		118,633
Additional paid‑in capital	235,623		242,041
Retained earnings	239,901		191,585
Accumulated other comprehensive income (loss)	6,333		(2,480		)
Total stockholders' equity	599,262		549,779
Total liabilities and stockholders' equity	$	609,519	$	559,790

Condensed Statements of Income

Financial statements of Origin Bancorp, Inc. (parent company only) are as follows:



(Dollars in thousands)	Years Ended December 31,
Condensed Statements of Income	2019		2018		2017
Income:
Dividends from subsidiaries	$	17,500	$	4,500	$	8,000
Other	470		2,052		41
Total income	17,970		6,552		8,041
Expenses:
Interest expense	7		—		—
Salaries and employee benefits	728		658		433
Other	2,121		2,015		1,384
Total expenses	2,856		2,673		1,817
Income before income taxes and equity in undistributed net income of subsidiaries	15,114		3,879		6,224
Income tax benefit	502		84		477
Income before equity in undistributed net income of subsidiaries	15,616		3,963		6,701
Equity in undistributed net income of subsidiaries	38,266		47,642		7,968
Net income	$	53,882	$	51,605	$	14,669

Condensed Statements of Cash Flows

Financial statements of Origin Bancorp, Inc. (parent company only) are as follows:



(Dollars in thousands)	Years Ended December 31,
Condensed Statements of Cash Flows	2019			2018			2017
Cash flows from operating activities:
Net income	$	53,882		$	51,605		$	14,669
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes	9			9			11
Equity in undistributed net income of subsidiaries	(38,266		)	(47,642		)	(7,968		)
Amortization of subordinated debentures discount	28			25			23
Stock compensation	283			356			78
Other, net	(153		)	(2,543		)	5,488
Net cash provided by operating activities	15,783			1,810			12,301
Cash flows from investing activities:
Capital contributed to subsidiaries	—			(45,794		)	—
Net purchases of non-marketable equity securities held in other financial institutions	—			(2,213		)	(2,065		)
Net cash used in investing activities	—			(48,007		)	(2,065		)
Cash flows from financing activities:
Dividends paid	(5,863		)	(5,941		)	(6,996		)
Taxes paid related to net share settlement of equity awards	—			(23		)	(410		)
Cash received on exercise of stock options	166			559			186
Proceeds from issuance of common stock	—			95,178			—
Payment to repurchase preferred stock	(10,059		)	(48,260		)	—
Net cash provided by (used by) financing activities	(15,756		)	41,513			(7,220		)
Net increase (decrease) in cash and cash equivalents	27			(4,684		)	3,016
Cash and cash equivalents at beginning of year	5,882			10,566			7,550
Cash and cash equivalents at end of year	$	5,909		$	5,882		$	10,566

Summary of Quarterly Financial Statements (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Selected Unaudited Data



	Quarters Ended - 2019
(Dollars in thousands)	December 31		September 30		June 30		March 31
Total interest income	$	56,719	$	58,806	$	57,063	$	54,494
Total interest expense	12,624		14,184		14,094		12,468
Net interest income	44,095		44,622		42,969		42,026
Provision for credit losses	2,377		4,201		1,985		1,005
Net interest income after provision for credit losses	41,718		40,421		40,984		41,021
Non-interest income, exclusive of gain on sales of securities, net	10,818		12,860		11,176		11,604
Gain on sales of securities, net	—		20		—		—
Non-interest expense	36,534		35,064		37,095		35,381
Income before income taxes	16,002		18,237		15,065		17,244
Income tax expense	3,175		3,620		2,782		3,089
Net income	$	12,827	$	14,617	$	12,283	$	14,155
Basic earnings per common share ⁽¹⁾	$	0.55	$	0.62	$	0.52	$	0.60
Diluted earnings per common share ⁽¹⁾	0.55		0.62		0.52		0.60

____________________________


⁽¹⁾	Due to the combined impact of the repurchase of common stock on the quarterly average common shares outstanding calculation compared to the impact of the repurchase of common stock on the year-to-date average common shares outstanding calculation, and the effect of rounding, the sum of the quarterly earnings per common share will not equal the year-to-date earnings per common share amount.



	Quarters Ended - 2018
(Dollars in thousands)	December 31			September 30		June 30		March 31
Total interest income	$	53,058		$	48,842	$	44,752	$	41,444
Total interest expense	10,997			9,345		7,582		6,720
Net interest income	42,061			39,497		37,170		34,724
Provision (benefit) for credit losses	1,723			504		311		(1,524		)
Net interest income after provision for credit losses	40,338			38,993		36,859		36,248
Non-interest income, exclusive of (loss) on sales of securities, net	10,596			10,237		10,615		9,800
Loss on sales of securities, net	(8		)	—		—		—
Non-interest expense	35,023			34,344		32,012		29,857
Income before income taxes	15,903			14,886		15,462		16,191
Income tax expense	2,725			2,568		2,760		2,784
Net income	13,178			12,318		12,702		13,407
Less preferred stock dividends	—			—		808		1,115
Less income allocated to participating stockholders⁽¹⁾	86			54		40		553
Net income available to common stockholders⁽¹⁾	$	13,092		$	12,264	$	11,854	$	11,739
Basic earnings per common share⁽¹⁾	$	0.56		$	0.52	$	0.54	$	0.60
Diluted earnings per common share⁽¹⁾	0.55			0.52		0.53		0.60

____________________________

⁽¹⁾

Significant Accounting Policies (Details)			12 Months Ended
Significant Accounting Policies (Details)	Jan. 01, 2020 USD ($)	Jan. 01, 2018 USD ($)	Dec. 31, 2019 USD ($) center segment	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jan. 01, 2019 USD ($)	Mar. 31, 2018 USD ($)
Accounting Policies [Abstract]
Number of banking centers \| center			43
Number of segments \| segment			1
Equity investments			$ 12,100,000	$ 11,700,000
Property, Plant and Equipment [Line Items]
OREO			4,700,000	3,700,000
Penalties and related interest			0	0	$ 0
Investments in limited partnerships, LLCs and other privately held companies			$ 16,000,000.0	14,500,000
General partner ownership interest			0.10%
Investments in tax credit entities			$ 9,000,000.0	10,600,000
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset			24,013,000
Lease liability			25,810,000
Cumulative effect adjustment credit, net of tax		$ 0				$ 321,000
Reclassification to retained earnings			239,901,000	191,585,000
Reclassification from operating activities			(61,553,000)	(77,826,000)	(61,988,000)
Reclassification to investing activities			$ (291,185,000)	(764,927,000)	(197,650,000)
Held to maturity and available for sale securities percentage			73.00%
ASU No. 2018-15
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Capitalized costs relating to internal use software				$ 455,000
ASU No. 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification to retained earnings							$ 282,000
ASU No. 2016-15
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from operating activities		844,000
Reclassification to investing activities					$ 844,000
ASU No. 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Right of use asset						19,700,000
Lease liability						19,400,000
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment credit, net of tax		$ (282,000)				321,000
Retained Earnings \| ASU No. 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect adjustment credit, net of tax						$ 321,000
Subsequent Event \| Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Allowance for credit losses increase	$ 1,300,000
Decrease to the off-balance sheet reserve	382,000
Subsequent Event \| Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative effect on retained earnings net of tax	$ 760,000
Buildings and improvements \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives			35 years
Buildings and improvements \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives			39 years
Furniture, fixtures and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Estimated useful lives			3 years
Furniture, fixtures and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Estimated useful lives			7 years

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic earnings per common share
Net income	$ 12,827	$ 14,617	$ 12,283	$ 14,155	$ 13,178	$ 12,318	$ 12,702	$ 13,407	$ 53,882	$ 51,605	$ 14,669
Less: Dividends to preferred stock					0	0	808	1,115	0	1,923	4,461
Net income allocated to participating stockholders					86	54	40	553	0	1,029	377
Net income available to common stockholders					$ 13,092	$ 12,264	$ 11,854	$ 11,739	$ 53,882	$ 48,653	$ 9,831
Weighted average common shares outstanding (in shares)									23,470,746	21,995,990	19,418,278
Basic earnings per common share ($ per share)	$ 0.55	$ 0.62	$ 0.52	$ 0.60	$ 0.56	$ 0.52	$ 0.54	$ 0.60	$ 2.30	$ 2.21	$ 0.51
Diluted earnings per common share
Diluted earnings applicable to common stockholders									$ 53,882	$ 48,819	$ 9,861
Weighted average diluted common shares outstanding:
Weighted average common shares outstanding (in shares)									23,470,746	21,995,990	19,418,278
Dilutive effect of common stock options (in shares)									203,319	198,439	216,134
Weighted average diluted common shares outstanding (in shares)									23,674,065	22,194,429	19,634,412
Diluted earnings per common share ($ per share)	$ 0.55	$ 0.62	$ 0.52	$ 0.60	$ 0.55	$ 0.52	$ 0.53	$ 0.60	$ 2.28	$ 2.20	$ 0.50

Securities - Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Available for sale:
Amortized Cost	$ 493,058	$ 579,051
Gross Unrealized Gains	8,628	2,276
Gross Unrealized Losses	(616)	(5,683)
Fair Value	501,070	575,644
Held to maturity:
Amortized Cost	28,620	19,169
Fair Value	29,523
Securities carried at fair value through income:
Fair Value	11,513	11,361
State and municipal securities
Available for sale:
Amortized Cost	96,180	99,780
Gross Unrealized Gains	3,039	1,266
Gross Unrealized Losses	(35)	(163)
Fair Value	99,184	100,883
Held to maturity:
Amortized Cost	28,620	19,169
Gross Unrealized Gains	903	0
Gross Unrealized Losses	0	(33)
Fair Value	29,523	19,136
Securities carried at fair value through income:
Amortized Cost	11,070	11,503
Fair Value	11,513	11,361
Corporate bonds
Available for sale:
Amortized Cost	16,037	10,997
Gross Unrealized Gains	780	102
Gross Unrealized Losses	0	(65)
Fair Value	16,817	11,034
U.S. government and agency securities
Available for sale:
Amortized Cost	5,063	61,122
Gross Unrealized Gains	183	82
Gross Unrealized Losses	(8)	(54)
Fair Value	5,238	61,150
Commercial mortgage-backed securities
Available for sale:
Amortized Cost	11,882	16,672
Gross Unrealized Gains	262	94
Gross Unrealized Losses	0	0
Fair Value	12,144	16,766
Residential mortgage-backed securities
Available for sale:
Amortized Cost	204,650	188,058
Gross Unrealized Gains	3,105	417
Gross Unrealized Losses	(249)	(2,160)
Fair Value	207,506	186,315
Commercial collateralized mortgage obligations
Available for sale:
Amortized Cost	4,321
Gross Unrealized Gains	73
Gross Unrealized Losses	0
Fair Value	4,394
Residential collateralized mortgage obligations
Available for sale:
Amortized Cost	154,925	202,422
Gross Unrealized Gains	1,186	315
Gross Unrealized Losses	(324)	(3,241)
Fair Value	$ 155,787	$ 199,496

Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months	$ 56,446	$ 110,851
12 Months or More	39,855	206,535
Total	96,301	317,386
Unrealized Loss
Less than 12 Months	(304)	(313)
12 Months or More	(312)	(5,370)
Total	(616)	(5,683)
State and municipal securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months	6,996	13,101
12 Months or More	0	8,463
Total	6,996	21,564
Unrealized Loss
Less than 12 Months	(35)	(50)
12 Months or More	0	(113)
Total	(35)	(163)
Fair Value
Less than 12 Months		13,921
12 Months or More		0
Total		13,921
Unrealized Loss
Less than 12 Months		(33)
12 Months or More		0
Total		(33)
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months		7,932
12 Months or More		0
Total		7,932
Unrealized Loss
Less than 12 Months		(65)
12 Months or More		0
Total		(65)
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months	0	56,271
12 Months or More	663	0
Total	663	56,271
Unrealized Loss
Less than 12 Months	0	(54)
12 Months or More	(8)	0
Total	(8)	(54)
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months	29,184	18,836
12 Months or More	14,917	77,471
Total	44,101	96,307
Unrealized Loss
Less than 12 Months	(151)	(65)
12 Months or More	(98)	(2,095)
Total	(249)	(2,160)
Residential collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Less than 12 Months	20,266	14,711
12 Months or More	24,275	120,601
Total	44,541	135,312
Unrealized Loss
Less than 12 Months	(118)	(79)
12 Months or More	(206)	(3,162)
Total	$ (324)	$ (3,241)

Securities - Narrative (Details)	Dec. 31, 2019 security
Investments, Debt and Equity Securities [Abstract]
Number of securities in an unrealized loss positions (in security)	54

Securities - Proceeds from Sales of Securities Available for Sale and Gross Gains (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales	$ 27,766	$ 20,877	$ 0
Gross realized gains	161	381
Gross realized losses	(141)	(389)
Tax expense (benefit) related to securities gains/losses	$ 4	$ (2)

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 3,998
Due after one year through five years	46,610
Due after five years through ten years	50,419
Due after ten years	16,253
Amortized Cost	493,058	$ 579,051
Fair Value
Due in one year or less	4,020
Due after one year through five years	48,698
Due after five years through ten years	52,176
Due after ten years	16,345
Available for sale, fair value	501,070	575,644
Amortized Cost
Due in one year or less	0
Due after one year through five years	13,415
Due after five years through ten years	15,205
Due after ten years	0
Amortized Cost	28,620	19,169
Fair Value
Due in one year or less	0
Due after one year through five years	13,498
Due after five years through ten years	16,025
Due after ten years	0
Held to maturity, fair value	29,523
Commercial mortgage-backed securities
Amortized Cost
Without single maturity date	11,882
Amortized Cost	11,882	16,672
Fair Value
Without single maturity date	12,144
Available for sale, fair value	12,144	16,766
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	0
Residential mortgage-backed securities
Amortized Cost
Without single maturity date	204,650
Amortized Cost	204,650	188,058
Fair Value
Without single maturity date	207,506
Available for sale, fair value	207,506	186,315
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	0
Commercial collateralized mortgage obligations
Amortized Cost
Without single maturity date	4,321
Amortized Cost	4,321
Fair Value
Without single maturity date	4,394
Available for sale, fair value	4,394
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	0
Residential collateralized mortgage obligations
Amortized Cost
Without single maturity date	154,925
Amortized Cost	154,925	202,422
Fair Value
Without single maturity date	155,787
Available for sale, fair value	155,787	$ 199,496
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	$ 0

Securities - Securities Pledged as Collateral (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Carrying value of securities pledged to secure public deposits
Schedule of Held-to-maturity Securities [Line Items]
Securities pledged as collateral	$ 285,552	$ 364,055
Carrying value of securities pledged to repurchase agreements
Schedule of Held-to-maturity Securities [Line Items]
Securities pledged as collateral	$ 20,356	$ 48,847

Loans - Schedule of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for sale	$ 64,837	$ 52,210
Loans held for investment	4,143,195	3,789,105
Less: Allowance for loan losses	37,520	34,203	$ 37,083	$ 50,531
Net loans held for investment	4,105,675	3,754,902
Net deferred loan fees	3,600	3,200
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	2,504,090	2,287,776
Real estate \| Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	1,296,847	1,228,402
Less: Allowance for loan losses	10,013	8,999	8,998	8,718
Real estate \| Construction/land/land development
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	517,688	429,660
Less: Allowance for loan losses	3,711	3,331	2,950	2,805
Real estate \| Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	689,555	629,714
Less: Allowance for loan losses	6,332	5,705	5,807	5,003
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	1,343,475	1,272,566
Less: Allowance for loan losses	16,960	15,616	18,831	33,590
Mortgage warehouse lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	274,659	207,871
Less: Allowance for loan losses	262	316	214	139
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	20,971	20,892
Less: Allowance for loan losses	$ 242	$ 236	$ 283	$ 276

Loans - Narrative (Details)	12 Months Ended
Loans - Narrative (Details)	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value		$ 18,571,000
Unfunded amount committed to advance in connection with impaired loans	$ 0
Nonaccrual mortgage loans held for sale recorded at fair value	$ 927,000	$ 741,000
Number of loans that defaulted \| loan	2	0	1
Nonperforming Financial Instruments
Loans and Leases Receivable Disclosure [Line Items]
Gross interest income that would have been recorded	$ 1,500,000	$ 1,400,000	$ 1,300,000
Interest income	0
Outstanding principal balance	117,000		$ 241,000
Real estate \| Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value	$ 17,670,000	$ 18,600,000

Loans - Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 29,980	$ 34,085
Current Loans	4,113,215	3,755,020
Total Loans Receivable	4,143,195	3,789,105
Accruing Loans 90 or More Days Past Due	0	0
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	8,412	5,911
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,123	10,207
Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	18,445	17,967
Real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	15,571	18,996
Current Loans	2,488,519	2,268,780
Total Loans Receivable	2,504,090	2,287,776
Accruing Loans 90 or More Days Past Due	0	0
Real estate \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	6,660	5,252
Real estate \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,051	1,936
Real estate \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	6,860	11,808
Real estate \| Commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	6,808	9,091
Current Loans	1,290,039	1,219,311
Total Loans Receivable	1,296,847	1,228,402
Accruing Loans 90 or More Days Past Due	0	0
Real estate \| Commercial real estate \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	917	458
Real estate \| Commercial real estate \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	1,409
Real estate \| Commercial real estate \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	5,891	7,224
Real estate \| Construction/land/land development
Financing Receivable, Past Due [Line Items]
Total Past Due	3,758	3,092
Current Loans	513,930	426,568
Total Loans Receivable	517,688	429,660
Accruing Loans 90 or More Days Past Due	0	0
Real estate \| Construction/land/land development \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	3,569	2,657
Real estate \| Construction/land/land development \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	133	0
Real estate \| Construction/land/land development \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	56	435
Real estate \| Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	5,005	6,813
Current Loans	684,550	622,901
Total Loans Receivable	689,555	629,714
Accruing Loans 90 or More Days Past Due	0	0
Real estate \| Residential real estate \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,174	2,137
Real estate \| Residential real estate \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,918	527
Real estate \| Residential real estate \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	913	4,149
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Past Due	14,170	14,696
Current Loans	1,329,305	1,257,870
Total Loans Receivable	1,343,475	1,272,566
Accruing Loans 90 or More Days Past Due	0	0
Commercial and industrial \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,588	276
Commercial and industrial \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,037	8,263
Commercial and industrial \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	11,545	6,157
Mortgage warehouse lines of credit
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Current Loans	274,659	207,871
Total Loans Receivable	274,659	207,871
Accruing Loans 90 or More Days Past Due	0	0
Mortgage warehouse lines of credit \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Mortgage warehouse lines of credit \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Mortgage warehouse lines of credit \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Consumer
Financing Receivable, Past Due [Line Items]
Total Past Due	239	393
Current Loans	20,732	20,499
Total Loans Receivable	20,971	20,892
Accruing Loans 90 or More Days Past Due	0	0
Consumer \| 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	164	383
Consumer \| 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	35	8
Consumer \| Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 40	$ 2

Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				$ 34,203				$ 37,083	$ 34,203	$ 37,083	$ 50,531
Charge-offs									10,131	7,124	23,877
Recoveries									4,241	2,663	2,210
Provision (Benefit)									9,207	1,581	8,219
Ending balance	$ 37,520				$ 34,203				37,520	34,203	37,083
Provision for credit losses	2,377	$ 4,201	$ 1,985	1,005	1,723	$ 504	$ 311	(1,524)	9,568	1,014	8,336
Provision (release of provision) for off-balance sheet commitments									(361)	567	(117)
Real estate \| Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				8,999				8,998	8,999	8,998	8,718
Charge-offs									1,420	1,300	463
Recoveries									341	226	93
Provision (Benefit)									2,093	1,075	650
Ending balance	10,013				8,999				10,013	8,999	8,998
Real estate \| Construction/land/land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				3,331				2,950	3,331	2,950	2,805
Charge-offs									38	228	3
Recoveries									40	6	5
Provision (Benefit)									378	603	143
Ending balance	3,711				3,331				3,711	3,331	2,950
Real estate \| Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				5,705				5,807	5,705	5,807	5,003
Charge-offs									265	407	1,446
Recoveries									185	133	125
Provision (Benefit)									707	172	2,125
Ending balance	6,332				5,705				6,332	5,705	5,807
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				15,616				18,831	15,616	18,831	33,590
Charge-offs									8,231	5,068	21,767
Recoveries									3,627	2,206	1,918
Provision (Benefit)									5,948	(353)	5,090
Ending balance	16,960				15,616				16,960	15,616	18,831
Mortgage warehouse lines of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				316				214	316	214	139
Charge-offs									29	0	0
Recoveries									0	0	0
Provision (Benefit)									(25)	102	75
Ending balance	262				316				262	316	214
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance				$ 236				$ 283	236	283	276
Charge-offs									148	121	198
Recoveries									48	92	69
Provision (Benefit)									106	(18)	136
Ending balance	$ 242				$ 236				$ 242	$ 236	$ 283

Loans - Impaired Loans Evaluated Individually and Collectively (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	$ 199	$ 366
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	37,321	33,837
Period End Loan Balance Individually Evaluated for Impairment	32,474	33,278
Period End Loan Balance Collectively Evaluated for Impairment	4,093,051	3,737,256
Loans held for investment at fair value		18,571
Real estate \| Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	3	5
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	10,010	8,994
Period End Loan Balance Individually Evaluated for Impairment	7,446	8,773
Period End Loan Balance Collectively Evaluated for Impairment	1,271,731	1,201,058
Loans held for investment at fair value	17,670	18,600
Real estate \| Construction/land/land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	3	19
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	3,708	3,312
Period End Loan Balance Individually Evaluated for Impairment	4,329	1,017
Period End Loan Balance Collectively Evaluated for Impairment	513,359	428,643
Real estate \| Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	21	68
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	6,311	5,637
Period End Loan Balance Individually Evaluated for Impairment	4,937	6,876
Period End Loan Balance Collectively Evaluated for Impairment	684,618	622,838
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	168	255
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	16,792	15,361
Period End Loan Balance Individually Evaluated for Impairment	15,662	16,428
Period End Loan Balance Collectively Evaluated for Impairment	1,327,813	1,256,138
Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	0	0
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	262	316
Period End Loan Balance Individually Evaluated for Impairment	0	0
Period End Loan Balance Collectively Evaluated for Impairment	274,659	207,871
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment	4	19
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment	238	217
Period End Loan Balance Individually Evaluated for Impairment	100	184
Period End Loan Balance Collectively Evaluated for Impairment	$ 20,871	$ 20,708

Loans - Impaired Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 44,293	$ 39,123
Recorded Investment with no Allowance	30,423	31,461
Recorded Investment with an Allowance	2,051	1,817
Total Recorded Investment	32,474	33,278
Allocation of Allowance for Loan Losses	199	366
Real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	21,326	20,038
Recorded Investment with no Allowance	16,038	15,655
Recorded Investment with an Allowance	674	1,011
Total Recorded Investment	16,712	16,666
Allocation of Allowance for Loan Losses	27	92
Real estate \| Commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	10,788	10,894
Recorded Investment with no Allowance	7,375	8,725
Recorded Investment with an Allowance	71	48
Total Recorded Investment	7,446	8,773
Allocation of Allowance for Loan Losses	3	5
Real estate \| Construction/land/land development
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	4,692	1,329
Recorded Investment with no Allowance	4,256	838
Recorded Investment with an Allowance	73	179
Total Recorded Investment	4,329	1,017
Allocation of Allowance for Loan Losses	3	19
Real estate \| Residential real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	5,846	7,815
Recorded Investment with no Allowance	4,407	6,092
Recorded Investment with an Allowance	530	784
Total Recorded Investment	4,937	6,876
Allocation of Allowance for Loan Losses	21	68
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	22,857	18,883
Recorded Investment with no Allowance	14,385	15,806
Recorded Investment with an Allowance	1,277	622
Total Recorded Investment	15,662	16,428
Allocation of Allowance for Loan Losses	168	255
Consumer
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	110	202
Recorded Investment with no Allowance	0	0
Recorded Investment with an Allowance	100	184
Total Recorded Investment	100	184
Allocation of Allowance for Loan Losses	$ 4	$ 19

Loans - Average Recorded Investment and Interest Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 31,797	$ 33,896	$ 58,057
Interest Income Recognized	103	347	632
Real estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	15,198	18,831	17,497
Interest Income Recognized	51	143	250
Real estate \| Commercial real estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	8,842	9,901	7,046
Interest Income Recognized	21	67	165
Real estate \| Construction/land/land development
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,266	1,401	1,053
Interest Income Recognized	8	16	10
Real estate \| Residential real estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	5,090	7,529	9,398
Interest Income Recognized	22	60	75
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	16,449	14,814	40,316
Interest Income Recognized	49	199	375
Consumer
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	150	251	244
Interest Income Recognized	$ 3	$ 5	$ 7

Loans - Non Performing (Nonaccrual) Loans Held For Investment (Details) - Nonperforming Financial Instruments - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	$ 31,146	$ 31,856
Real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	16,463	15,884
Real estate \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	6,994	8,281
Real estate \| Construction/land/land development
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	4,337	935
Real estate \| Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	5,132	6,668
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	14,520	15,792
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Total nonaccrual loans	$ 163	$ 180

Loans - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans classified as troubled debt restructurings	$ 8,452	$ 7,847
Nonaccrual TDRs
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans classified as troubled debt restructurings	6,609	5,793
Performing TDRs
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans classified as troubled debt restructurings	$ 1,843	$ 2,054

Loans - Pre-Modification Balances of TDR (Details) - Nonperforming Financial Instruments $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) loan	Dec. 31, 2018 USD ($) loan	Dec. 31, 2017 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan	9	11	16
Pre-Modification Recorded Balance	$ 4,202	$ 911	$ 13,052
Total Modifications	$ 3,614	$ 771	$ 12,272
Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan	3	7	7
Pre-Modification Recorded Balance	$ 2,877	$ 680	$ 2,204
Total Modifications	$ 2,753	$ 548	$ 2,305
Real estate \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan		1	4
Pre-Modification Recorded Balance		$ 252	$ 2,071
Total Modifications		$ 150	$ 2,057
Real estate \| Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan	1
Pre-Modification Recorded Balance	$ 361
Total Modifications	$ 343
Real estate \| Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan	2	6	3
Pre-Modification Recorded Balance	$ 2,516	$ 428	$ 133
Total Modifications	$ 2,410	$ 398	$ 248
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan	5	3	8
Pre-Modification Recorded Balance	$ 1,314	$ 198	$ 10,799
Total Modifications	$ 852	$ 194	$ 9,922
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured \| loan	1	1	1
Pre-Modification Recorded Balance	$ 11	$ 33	$ 49
Total Modifications	9	29	45
Term Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	861	378	12,022
Term Concessions \| Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	198	2,095
Term Concessions \| Real estate \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		150	2,057
Term Concessions \| Real estate \| Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0
Term Concessions \| Real estate \| Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	48	38
Term Concessions \| Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	852	180	9,882
Term Concessions \| Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	9	0	45
Interest Rate Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	19	0
Interest Rate Concessions \| Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	19	0
Interest Rate Concessions \| Real estate \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0	0
Interest Rate Concessions \| Real estate \| Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0
Interest Rate Concessions \| Real estate \| Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	19	0
Interest Rate Concessions \| Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	0	0
Interest Rate Concessions \| Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	0	0
Combination
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	2,753	374	250
Combination \| Real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	2,753	331	210
Combination \| Real estate \| Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0	0
Combination \| Real estate \| Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	343
Combination \| Real estate \| Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	2,410	331	210
Combination \| Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	14	40
Combination \| Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	$ 0	$ 29	$ 0

Fair Value of Financial Instruments - Fair Value of Assets and Liabilities Recorded on a Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	$ 501,070	$ 575,644
Securities carried at fair value through income	11,513	11,361
Loans held for sale	36,977	21,562
Loans at fair value		18,571
Mortgage servicing rights	20,697	25,114	$ 24,182	$ 29,385
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	501,070	575,644
Securities carried at fair value through income	11,513	11,361
Loans held for sale	36,977	21,562
Loans at fair value	17,670	18,571
Mortgage servicing rights	20,697	25,114
Other assets - derivatives	9,384	3,563
Total recurring fair value measurements - assets	597,311	655,815
Other liabilities - derivatives	(9,488)	(2,846)
Total recurring fair value measurements - liabilities	(9,488)	(2,846)
Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	55,515
Securities carried at fair value through income	0	0
Loans held for sale	0	0
Loans at fair value	0	0
Mortgage servicing rights	0	0
Other assets - derivatives	0	0
Total recurring fair value measurements - assets	0	55,515
Other liabilities - derivatives	0	0
Total recurring fair value measurements - liabilities	0	0
Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	462,897	480,768
Securities carried at fair value through income	0	0
Loans held for sale	36,977	21,562
Loans at fair value	0	0
Mortgage servicing rights	0	0
Other assets - derivatives	9,384	3,563
Total recurring fair value measurements - assets	509,258	505,893
Other liabilities - derivatives	(9,488)	(2,846)
Total recurring fair value measurements - liabilities	(9,488)	(2,846)
Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	38,173	39,361
Securities carried at fair value through income	11,513	11,361
Loans held for sale	0	0
Loans at fair value	17,670	18,571
Mortgage servicing rights	20,697	25,114
Other assets - derivatives	0	0
Total recurring fair value measurements - assets	88,053	94,407
Other liabilities - derivatives	0	0
Total recurring fair value measurements - liabilities	0	0
State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	99,184	100,883
Securities carried at fair value through income	11,513	11,361
State and municipal securities \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale		100,883
State and municipal securities \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
State and municipal securities \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	61,011	61,522
State and municipal securities \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	38,173	39,361
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	16,817	11,034
Corporate bonds \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	16,817	11,034
Corporate bonds \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Corporate bonds \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	16,817	11,034
Corporate bonds \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
U.S. treasury securities \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale		55,515
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale		55,515
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale		0
U.S. treasury securities \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale		0
U.S. government agency securities \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	5,238	5,635
U.S. government agency securities \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
U.S. government agency securities \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	5,238	5,635
U.S. government agency securities \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	12,144	16,766
Commercial mortgage-backed securities \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	12,144	16,766
Commercial mortgage-backed securities \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Commercial mortgage-backed securities \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	12,144	16,766
Commercial mortgage-backed securities \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	207,506	186,315
Residential mortgage-backed securities \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	207,506	186,315
Residential mortgage-backed securities \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential mortgage-backed securities \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	207,506	186,315
Residential mortgage-backed securities \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Commercial collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	4,394
Commercial collateralized mortgage obligations \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	4,394
Commercial collateralized mortgage obligations \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0
Commercial collateralized mortgage obligations \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	4,394
Commercial collateralized mortgage obligations \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0
Residential collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	155,787	199,496
Residential collateralized mortgage obligations \| Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	155,787	199,496
Residential collateralized mortgage obligations \| Fair Value, Measurements, Recurring \| Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential collateralized mortgage obligations \| Fair Value, Measurements, Recurring \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	155,787	199,496
Residential collateralized mortgage obligations \| Fair Value, Measurements, Recurring \| Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	$ 0	$ 0

Fair Value of Financial Instruments - Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Loans at Fair Value
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	$ 18,571	$ 26,611
Gain (loss) recognized in AOCI	0	0
Purchases, issuances, sales and settlements:
Originations	0	0
Purchases		0
Sales	0
Settlements	(1,025)	(7,651)
Balance at end of period	17,670	18,571
Loans at Fair Value \| Mortgage banking revenue
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	0	0
Loans at Fair Value \| Other noninterest income
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	124	(389)
MSRs
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	25,114	24,182
Gain (loss) recognized in AOCI	0	0
Purchases, issuances, sales and settlements:
Originations	2,595	1,895
Purchases		0
Sales	0
Settlements	0	0
Balance at end of period	20,697	25,114
MSRs \| Mortgage banking revenue
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	(7,012)	(963)
MSRs \| Other noninterest income
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	0	0
Securities Available for Sale
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	39,361	42,015
Gain (loss) recognized in AOCI	1,673	(597)
Purchases, issuances, sales and settlements:
Originations	0	0
Purchases		259
Sales	(2,861)
Settlements	0	(2,316)
Balance at end of period	38,173	39,361
Securities Available for Sale \| Mortgage banking revenue
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	0	0
Securities Available for Sale \| Other noninterest income
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	0	0
Securities at Fair Value Through Income
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	11,361	12,033
Gain (loss) recognized in AOCI	0	0
Purchases, issuances, sales and settlements:
Originations	0	0
Purchases		0
Sales	0
Settlements	(434)	(414)
Balance at end of period	11,513	11,361
Securities at Fair Value Through Income \| Mortgage banking revenue
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	0	0
Securities at Fair Value Through Income \| Other noninterest income
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	$ 586	$ (258)

Fair Value of Financial Instruments - Assumptions Used to Value Mortgage Servicing Rights (Details)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Prepayment speed	12.46%	9.90%
Discount rate	9.55%	10.42%

Fair Value of Financial Instruments - Difference Between Fair Value and Unpaid Principal Balance (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 66,160,000	$ 51,494,000
Aggregate Unpaid Principal Balance	64,473,000	51,067,000
Difference	1,687,000	427,000
Loans for which the fair value had been elected that were designated as nonaccrual or past due 90 days or more	0	0
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	36,977,000	21,562,000
Aggregate Unpaid Principal Balance	36,037,000	21,173,000
Difference	940,000	389,000
Loans, 90 days or more past due	927,000	741,000
Commercial real estate loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	17,670,000	18,571,000
Aggregate Unpaid Principal Balance	17,366,000	18,391,000
Difference	304,000	180,000
Securities carried at fair value through income
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	11,513,000	11,361,000
Aggregate Unpaid Principal Balance	11,070,000	11,503,000
Difference	443,000	(142,000)
U.S. government agency securities
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, 90 days or more past due	$ 709,000	$ 582,000

Fair Value of Financial Instruments - Changes in Fair Value of Assets Classified in the Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Mortgage banking revenue
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	$ 550	$ (163)	$ 477
Other income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	710	(647)	(809)
Other income \| Loans at fair value held for investment
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	124	(389)	(712)
Other income \| Securities carried at fair value through income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	586	(258)	(97)
Noninterest income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	$ 1,260	$ (810)	$ (332)

Fair Value of Financial Instruments - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-marketable equity securities held in other financial institutions	$ 39,808,000	$ 42,149,000
Impairment recorded on investments in equity securities that do not have readily determinable fair values	0
Liability to repurchase past due GNMA loans	27,900,000	30,600,000
Fair value of impaired loans	32,474,000	33,278,000
Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	16,712,000	16,666,000
Fair Value, Measurements, Nonrecurring \| Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	1,900,000	1,400,000
Foreclosed assets	4,700,000	$ 3,700,000
Residential real estate \| Fair Value, Measurements, Nonrecurring \| Fair Value, Inputs, Level 3 \| Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans in the process of foreclosure	$ 786,000
Minimum \| Measurement Input, Credit Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit spread, securities at fair value through income	0.83%
Credit spread, loans held-for-investment	2.90%	2.90%
Maximum \| Measurement Input, Credit Spread
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Credit spread, securities at fair value through income		2.27%
Credit spread, loans held-for-investment	4.13%	4.13%

Fair Value of Financial Instruments - Carrying Value and Estimated Fair Values of Financial Instruments Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	$ 29,523
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
FHLB advances and other borrowings	417,190
Junior subordinated debentures	9,671
Carrying Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	291,518	$ 116,678
Carrying Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-marketable equity securities held in other financial institutions	39,808	42,149
Accrued interest and loan fees receivable	16,430	16,454
Deposits	4,228,612	3,783,138
FHLB advances and other borrowings		445,224
Junior subordinated debentures		9,644
Accrued interest payable	2,822	2,679
Carrying Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	28,620	19,169
Loans held for investment, net	4,088,005	3,736,331
Estimated Fair Value \| Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	291,518	116,678
Estimated Fair Value \| Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-marketable equity securities held in other financial institutions	39,808	42,149
Accrued interest and loan fees receivable	16,430	16,454
Deposits	4,081,430	3,537,283
FHLB advances and other borrowings	425,318	444,286
Junior subordinated debentures	10,717	10,723
Accrued interest payable	2,822	2,679
Estimated Fair Value \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	29,523	19,136
Loans held for investment, net	$ 3,940,347	$ 3,605,142

Premises and Equipment - Major Classifications of Premises and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 127,269	$ 120,120
Accumulated depreciation	(46,812)	(45,106)
Total	80,457	75,014
Land, buildings and improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	83,161	82,114
Furniture, fixtures and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	27,911	24,946
Leasehold improvements
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	15,790	11,345
Construction in process
Property, Plant and Equipment [Line Items]
Premises and equipment, gross	$ 407	$ 1,715

Premises and Equipment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Abstract]
Depreciation expense	$ 5.4	$ 4.9	$ 5.3

Leases - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 01, 2018
Leases [Abstract]
Cumulative effect adjustment credit, net of tax	$ 321			$ 0
Lease expense		$ 4,400	$ 4,200
Deferred loss	$ 962

Leases - Balance Sheet Details and Components of Lease Expense (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Operating lease right of use assets (included in Accrued interest receivable and other assets)	$ 24,013
Operating lease liabilities (included in Accrued expenses and other liabilities)	25,810
Finance lease liabilities (included in Accrued expenses and other liabilities)	$ 248
Weighted average remaining lease term (years) - operating leases	9 years 6 months 29 days
Weighted average discount rate - operating leases	3.49%
Lease expense:
Operating lease expense	$ 4,716
Other lease expense	245
Total lease expense	4,961
Right of use assets obtained in exchange for new operating lease liabilities	$ 1,256

Leases - Maturities of Operating Lease Liabilities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Leases [Abstract]
Year 1	$ 4,703
Year 2	4,079
Year 3	3,826
Year 4	3,402
Year 5	2,349
Year 6 and thereafter	12,513
Total	30,872
Less: Imputed interest	5,062
Total lease obligations	$ 25,810

Leases - Supplemental Cash Flow Related to Leases (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Leases [Abstract]
Cash paid for operating leases	$ 4,796

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 01, 2018
Business Acquisition [Line Items]
Goodwill	$ 26,741	$ 26,741
Intangible asset amortization	$ 1,321	961	$ 518
RCF
Business Acquisition [Line Items]
Goodwill		4,500		$ 4,500
Other intangible assets		$ 4,900		$ 4,900

Goodwill and Other Intangible Assets - Components of Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Goodwill
Gross and Net	$ 26,741	$ 26,741
Finite-Lived Intangible Assets [Line Items]
Accumulated Amortization	(4,221)	(2,900)
Net	4,799
Total
Gross	35,761	35,761
Accumulated Amortization	(4,221)	(2,900)
Net	31,540	32,861
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Gross	1,260	1,260
Accumulated Amortization	(1,091)	(945)
Net	169	315
Total
Accumulated Amortization	(1,091)	(945)
Relationship based intangibles
Finite-Lived Intangible Assets [Line Items]
Gross	7,304	7,304
Accumulated Amortization	(2,781)	(1,819)
Net	4,523	5,485
Total
Accumulated Amortization	(2,781)	(1,819)
Tradename
Finite-Lived Intangible Assets [Line Items]
Gross	186	186
Accumulated Amortization	(124)	(46)
Net	62	140
Total
Accumulated Amortization	(124)	(46)
Non-compete
Finite-Lived Intangible Assets [Line Items]
Gross	270	270
Accumulated Amortization	(225)	(90)
Net	45	180
Total
Accumulated Amortization	$ (225)	$ (90)

Goodwill and Other Intangible Assets - Estimated Future Amortization Expense for Intangible Assets (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
2020	$ 1,060
2021	844
2022	689
2023	582
2024	488
Thereafter	1,136
Net	$ 4,799

Mortgage Banking - Mortgage Banking Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Mortgage Banking [Abstract]
Origination	$ 1,000	$ 854	$ 1,281
Gain on sale of loans held for sale	6,943	6,403	11,615
Servicing	6,547	7,081	7,872
Total gross mortgage revenue	14,490	14,338	20,768
Mortgage derivatives gain (loss)	979	(725)	(205)
MSR change due to payoffs and paydowns	(4,087)	(3,618)	(4,005)
MSR and hedge fair value adjustment	927	(400)	(249)
Gain (loss) on MSR sale	0	25	(503)
Mortgage banking revenue	$ 12,309	$ 9,620	$ 15,806

Mortgage Banking - Activity in Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 25,114	$ 24,182	$ 29,385
Origination of servicing rights	2,595	1,895	3,061
Change in fair value, including amortization, net	(7,012)	(963)	(6,014)
Sale of servicing rights	0	0	(2,250)
Balance at end of period	$ 20,697	$ 25,114	$ 24,182

Mortgage Banking - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2018
Mortgage Banking [Abstract]
Annual servicing fee income rate	0.28%
Mortgage loan servicing putback expenses	$ 33	$ 106
Reserve for mortgage loan servicing putback expenses	229		$ 196
Liability to repurchase past due GNMA loans	$ 27,900		$ 30,600

Deposits - Summary of Deposit Balances (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Banking and Thrift [Abstract]
Brokered time deposits	$ 0	$ 7,900,000
Noninterest-bearing demand	1,077,706,000	951,015,000
Interest bearing demand	776,037,000	738,725,000
Money market	1,277,053,000	815,997,000
Brokered	152,556,000	332,341,000
Savings	154,450,000	148,508,000
Time deposits	790,810,000	796,552,000
Total deposits	$ 4,228,612,000	$ 3,783,138,000

Deposits - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Banking and Thrift [Abstract]
Municipal deposits	$ 423,800	$ 395,000
Time deposits in denominations of $250,000 or more	319,100	364,100
Overdrawn deposits reclassified as unsecured loans	$ 1,100	$ 841,000

Deposits - Maturities of Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Year Ended December 31,
2020	$ 560,177
2021	142,889
2022	45,210
2023	18,032
2024	24,502
Total	$ 790,810	$ 804,403

Borrowings - Summary of Borrowed Funds (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	$ 417,190,000	$ 445,224,000
FHLB Advance, Maturities of 15 Years
Debt Instrument [Line Items]
Advance	$ 250,000,000.0	$ 250,000,000.0
FHLB Advances One
Debt Instrument [Line Items]
Fixed interest rate	1.65%	1.65%
GNMA repurchase liability
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	$ 27,860,000	$ 30,649,000
Long-term FHLB advances
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	272,613,000	274,261,000
Junior subordinated debentures, net	272,613,000
Junior subordinated debentures, net
Debt Instrument [Line Items]
Junior subordinated debentures, net	9,671,000	9,644,000
Overnight repurchase agreements with depositors
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	16,717,000	40,314,000
Long-term FHLB advances
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	$ 100,000,000	$ 100,000,000
Fixed interest rate	1.35%	2.70%

Borrowings - Narrative (Details)	12 Months Ended
Borrowings - Narrative (Details)	Dec. 31, 2019 USD ($) trust	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Number of wholly-owned, unconsolidated subsidiary grantor trusts \| trust	2
FHLB
Debt Instrument [Line Items]
Net amounts available under the blanket floating lien	$ 601,900,000	$ 468,800,000
Line of credit \| Federal Reserve Bank of Dallas
Debt Instrument [Line Items]
Availability to borrow	855,100,000	795,500,000
Commercial and industrial loans pledged as collateral	1,090,000,000.00	1,050,000,000.00
Line of credit outstanding, long-term	0	0
Revolving credit loans \| NexBank SSB
Debt Instrument [Line Items]
Maximum borrowing capacity		50,000,000
Line of credit outstanding, long-term	$ 0	$ 0
Revolving credit loans \| NexBank SSB \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Long-term FHLB advances \| Minimum
Debt Instrument [Line Items]
Fixed interest rate	1.65%	1.65%
Long-term FHLB advances \| Maximum
Debt Instrument [Line Items]
Fixed interest rate	5.72%	5.72%
Secured debt \| NexBank SSB
Debt Instrument [Line Items]
Principal amount	$ 50,000,000
Junior subordinated debentures, net
Debt Instrument [Line Items]
Remaining purchase discount	1,200,000	$ 1,200,000
Line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity	180,000,000.0	180,000,000.0
Line of credit outstanding, short-term	0	$ 0
Amount held on deposit	250,000
secured repurchase line of credit
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 75,000,000.0
Overnight repurchase agreements with depositors
Debt Instrument [Line Items]
Daily average interest rate	1.20%	0.86%

Borrowings - Schedule of Maturities of Long-term Advances (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
FHLB Advance, Maturities of 15 Years
Years Ended December 31,
Advance	$ 250,000,000.0	$ 250,000,000.0
FHLB Advances One
Years Ended December 31,
Fixed interest rate	1.65%	1.65%
Long-term FHLB advances
Years Ended December 31,
2020	$ 1,070,000
2021	1,117,000
2022	2,479,000
2023	4,253,000
2024	3,142,000
Thereafter	260,552,000
Total	$ 272,613,000

Borrowings - Summary of Terms of Current Debentures (Details) - Junior subordinated debentures, net $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Debt Instrument [Line Items]
Amount Outstanding	$ 10,826
CTB Statutory Trust I
Debt Instrument [Line Items]
Amount Outstanding	$ 6,702
Current Rate	5.23%
CTB Statutory Trust I \| Maximum
Debt Instrument [Line Items]
Maximum Rate	12.50%
CTB Statutory Trust I \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	3.30%
First Louisiana Statutory Trust I
Debt Instrument [Line Items]
Amount Outstanding	$ 4,124
Current Rate	3.69%
First Louisiana Statutory Trust I \| Maximum
Debt Instrument [Line Items]
Maximum Rate	16.00%
First Louisiana Statutory Trust I \| LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	1.80%

Derivative Financial Instruments - Fair Value of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Notional Amounts	$ 762,012	$ 454,363
Fair Values	(3)	565
Interest Rate Swaps \| Derivatives Not Designated as Hedging Instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	217,633	127,512
Fair Values	8,425	2,302
Interest Rate Swaps \| Derivatives Not Designated as Hedging Instruments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Amounts	246,397	145,857
Fair Values	(9,278)	(2,625)
Forward Commitments to Purchase \| Derivatives Not Designated as Hedging Instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	200,000	140,000
Fair Values	242	709
Forward Commitments to Sell \| Derivatives Not Designated as Hedging Instruments \| Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Amounts	60,600	24,750
Fair Values	(109)	(221)
Interest Rate-Lock Commitments \| Derivatives Not Designated as Hedging Instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	37,382	16,244
Fair Values	717	400
Cash Flow Hedging \| Interest Rate Swaps \| Derivatives Designated as Cash Flow Hedging Instruments \| Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	10,500	10,500
Fair Values	$ (101)	$ 152

Derivative Financial Instruments - Weighted-average Rates Paid and Received (Details) - Interest Rate Swaps	Dec. 31, 2019	Dec. 31, 2018
Cash Flow Hedges \| Paid
Derivative [Line Items]
Weighted-Average Interest Rate	4.81%	4.81%
Cash Flow Hedges \| Received
Derivative [Line Items]
Weighted-Average Interest Rate	4.64%	5.36%
Financial Institution \| Non-Hedging \| Paid
Derivative [Line Items]
Weighted-Average Interest Rate	4.93%	5.02%
Financial Institution \| Non-Hedging \| Received
Derivative [Line Items]
Weighted-Average Interest Rate	4.13%	4.67%
Customer \| Non-Hedging \| Paid
Derivative [Line Items]
Weighted-Average Interest Rate	4.18%	4.73%
Customer \| Non-Hedging \| Received
Derivative [Line Items]
Weighted-Average Interest Rate	4.93%	5.05%

Derivative Financial Instruments - Gains and Losses Recognized on Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Mortgage banking revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives not designated as hedging instruments	$ 3,079	$ (2,450)	$ (259)
Other non-interest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives not designated as hedging instruments	$ (530)	$ 584	$ 707

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash collateral on deposit	$ 15.3	$ 1.9

Stock and Incentive Compensation Plans - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Outstanding stock options term (does not exceed)	20 years
Restricted Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Shares surrendered to cover taxes owed upon the vesting of restricted stock awards (in shares)	0	910	11,843
Unrecognized compensation cost	$ 4.2
Unrecognized compensation cost weighted average period for recognition	2 years 6 months
2012 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Maximum number of common stock available for issuance (in shares)	950,152
Minimum \| Restricted Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Service period in which time-vested awards are earned	1 year
Maximum \| Restricted Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Service period in which time-vested awards are earned	5 years

Stock and Incentive Compensation Plans - Share-based Compensation Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense	$ 2,247	$ 1,462	$ 1,150
Related tax benefits recognized in net income	472	307	$ 403
Common stock options forfeited (in shares)			16,638
Restricted Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense	2,247	1,462	$ 1,180
Stock Options
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock compensation expense	$ 0	$ 0	$ (30)

Stock and Incentive Compensation Plans - Time-vested Award Activity (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Nonvested shares, beginning balance (in shares)	174,407	61,293	84,019
Granted (in shares)	37,641	151,324	35,913
Vested (in shares)	(59,344)	(36,209)	(55,003)
Forfeited (in shares)	(3,255)	(2,001)	(3,636)
Nonvested shares, ending balance (in shares)	149,449	174,407	61,293
Weighted Average Grant-Date Fair Value
Nonvested shares, ending balance ($ per share)	$ 35.01	$ 24.61	$ 24.22
Granted ($ per share)	32.77	37.51	25.14
Vested ($ per share)	33.50	27.70	24.39
Forfeited ($ per share)	30.21	37.47	24.12
Nonvested shares, beginning balance ($ per share)	$ 35.15	$ 35.01	$ 24.61

Stock and Incentive Compensation Plans - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Number of Shares
Outstanding at beginning of period (in shares)	274,000	319,500	358,638
Exercised (in shares)	(20,000)	(45,500)	(22,500)
Forfeited and expired (in shares)			(16,638)
Outstanding at end of period (in shares)	254,000	274,000	319,500	358,638
Exercisable at end of period (in shares)	254,000
Weighted Average Exercise Price
Outstanding at beginning of period ($ per share)	$ 10.38	$ 10.65	$ 11.37
Exercised ($ per share)	8.25	12.29	12.29
Forfeited and expired ($ per share)			23.89
Outstanding at end of period ($ per share)	10.55	$ 10.38	$ 10.65	$ 11.37
Exercisable at end of period ($ per share)	$ 10.55
Weighted average remaining contractual term (in years)	5 years 9 months 21 days	6 years 9 months	7 years 25 days	7 years 9 months 14 days
Weighted average remaining contractual term, exercisable (in years)	5 years 9 months 21 days
Aggregate intrinsic value	$ 6,932	$ 6,493	$ 4,840	$ 3,844
Aggregate intrinsic value, exercised	0	$ 0	$ 304
Aggregate intrinsic value, exercisable	$ 6,932

Employee Retirement Plan (Details) - USD ($) $ in Millions	12 Months Ended
Employee Retirement Plan (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Retirement Benefits [Abstract]
Percentage of eligible compensation matched	6.00%
Company match percentage	50.00%
Total expense related to the Retirement Plan, including optional contributions	$ 1.8	$ 1.6	$ 1.4
Deferred compensation liability	9.8	9.0
Expense recorded for deferred compensation plan	$ 1.2	$ 1.1	$ 1.1

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal income taxes:
Current									$ 14,232	$ 4,562	$ 715
Deferred									(2,513)	5,658	4,644
State income taxes:
Current									1,030	638	167
Deferred									(83)	(21)	287
Income tax expense	$ 3,175	$ 3,620	$ 2,782	$ 3,089	$ 2,725	$ 2,568	$ 2,760	$ 2,784	$ 12,666	$ 10,837	$ 5,813

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification to retained earnings	$ 239,901	$ 191,585
Valuation allowance related to carryforwards	970
Federal
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Gross net operating loss carryforwards	3,700
State
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Gross net operating loss carryforwards	$ 11,100
ASU No. 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification to retained earnings			$ 282

Income Taxes - Reconciliation of Income Tax Expense (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amount
Income taxes computed at statutory rate									$ 13,975	$ 13,113	$ 7,169
Tax exempt revenue, net of nondeductible interest									(644)	(907)	(1,629)
Low-income housing tax credits, net of amortization									(514)	(691)	(624)
Other tax credits, net of add-backs									(1,218)	(1,218)	(1,002)
Bank-owned life insurance income									(158)	(150)	(221)
State income taxes, net of federal benefit									730	469	186
Stock-based compensation									(100)	(252)	(80)
Deferred tax write-down for enacted tax rate changes									0	231	1,972
Other									595	242	42
Income tax expense	$ 3,175	$ 3,620	$ 2,782	$ 3,089	$ 2,725	$ 2,568	$ 2,760	$ 2,784	$ 12,666	$ 10,837	$ 5,813
Percent
Income taxes computed at statutory rate									21.00%	21.00%	35.00%
Tax exempt revenue, net of nondeductible interest									(0.97%)	(1.45%)	(7.95%)
Low-income housing tax credits, net of amortization									(0.77%)	(1.11%)	(3.05%)
Other tax credits, net of add-backs									(1.83%)	(1.95%)	(4.89%)
Bank-owned life insurance income									(0.24%)	(0.24%)	(1.08%)
State income taxes, net of federal benefit									1.10%	0.75%	0.91%
Stock-based compensation									(0.15%)	(0.40%)	(0.39%)
Deferred tax write-down for enacted tax rate changes									0.00%	0.37%	9.63%
Other									0.89%	0.38%	0.20%
Total income tax expense									19.03%	17.35%	28.38%

Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred tax assets:
Credit loss allowances	$ 8,557	$ 7,762
Deferred compensation and share-based compensation	3,698	2,471
Net operating loss carryforwards	1,245	1,238
Other	1,441	1,068
Gross deferred tax assets	14,941	12,539
Valuation allowance	(970)	(867)
Deferred tax assets net of valuation allowance	13,971	11,672
Deferred tax liabilities:
Basis difference in premises and equipment	2,669	1,655
Intangible assets	157	218
Mortgage servicing rights	4,472	5,426
Other	152	565
Gross deferred tax liabilities	7,450	7,864
Deferred Tax Assets, Net	$ 6,521	$ 3,808

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	$ 9,013	$ (4,157)	$ (2,225)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	549,779	420,351	420,093
Net change	8,813	(4,069)	(2,156)
Reclassification of tax effects related to the adoption of ASU 2018-02:
Current		(276)
Deferred		558
Stockholders' equity, ending balance	599,262	549,779	420,351
Unrealized Gains (Losses) on AFS Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(2,601)	1,280	3,505
Net change		(4,157)	(2,225)
Reclassification of tax effects related to the adoption of ASU 2018-02:
Current		(293)
Deferred		569
Stockholders' equity, ending balance	6,412	(2,601)	1,280
Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	121		(42)
Net change			69
Reclassification of tax effects related to the adoption of ASU 2018-02:
Stockholders' equity, ending balance		121
Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance		27
Net change		88
Reclassification of tax effects related to the adoption of ASU 2018-02:
Current		17
Deferred		(11)
Stockholders' equity, ending balance	(79)		27
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(2,480)	1,307	3,463
Net change	8,813	(4,069)	(2,156)
Reclassification of tax effects related to the adoption of ASU 2018-02:
Stockholders' equity, ending balance	$ 6,333	$ (2,480)	$ 1,307

Capital and Regulatory Matters - Actual Capital Amounts and Ratios (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Origin Bancorp, Inc.
Common Equity Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 561,630	$ 519,468
Actual, ratio	11.74%	11.94%
Minimum capital required, amount	$ 334,785	$ 304,431
Minimum capital required, ratio	7.00%	7.00%
Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 570,975	$ 528,786
Actual, ratio	11.94%	12.16%
Minimum capital required, amount	$ 406,524	$ 369,668
Minimum capital required, ratio	8.50%	8.50%
Total Capital to Risk-Weighted Assets
Actual, amount	$ 610,305	$ 564,437
Actual, ratio	12.76%	12.98%
Minimum capital required, amount	$ 502,175	$ 456,647
Minimum capital required, ratio	10.50%	10.50%
Leverage Ratio
Actual, amount	$ 570,975	$ 528,786
Actual, ratio	10.91%	11.21%
Minimum capital required, amount	$ 209,298	$ 188,711
Minimum capital required, ratio	4.00%	4.00%
Origin Bank \| Origin Bank
Common Equity Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 551,060	$ 508,826
Actual, ratio	11.55%	11.73%
Minimum capital required, amount	$ 333,924	$ 303,621
Minimum capital required, ratio	7.00%	7.00%
Well capitalized, amount	$ 310,072	$ 281,934
Well capitalized, ratio	6.50%	6.50%
Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 551,060	$ 508,826
Actual, ratio	11.55%	11.73%
Minimum capital required, amount	$ 405,479	$ 368,683
Minimum capital required, ratio	8.50%	8.50%
Well capitalized, amount	$ 381,627	$ 346,996
Well capitalized, ratio	8.00%	8.00%
Total Capital to Risk-Weighted Assets
Actual, amount	$ 590,390	$ 544,477
Actual, ratio	12.38%	12.55%
Minimum capital required, amount	$ 500,888	$ 455,430
Minimum capital required, ratio	10.50%	10.50%
Well capitalized, amount	$ 477,037	$ 433,743
Well capitalized, ratio	10.00%	10.00%
Leverage Ratio
Actual, amount	$ 551,060	$ 508,826
Actual, ratio	10.56%	10.81%
Minimum capital required, amount	$ 208,774	$ 188,229
Minimum capital required, ratio	4.00%	4.00%
Well capitalized, amount	$ 260,968	$ 235,287
Well capitalized, ratio	5.00%	5.00%

Capital and Regulatory Matters - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Aug. 02, 2019	Dec. 31, 2019
Resale Agreement Counterparty [Line Items]
Repurchase of common stock (in shares)	300,000
Buyback program at a price per share (in dollars per share)	$ 33.50
Repurchase of common stock value	$ 10,100	$ 10,059
Stock Repurchase Program, Remaining Authorized Repurchase Amount		29,900
Origin Bank \| Origin Bank
Resale Agreement Counterparty [Line Items]
Aggregate dividends without prior regulatory approval		$ 86,500

Commitments and Contingencies - Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instrument	$ 1,374,055	$ 1,178,735
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instrument	$ 39,344	$ 46,860

Commitments and Contingencies - Narrative (Details)	Dec. 31, 2019 USD ($) instrument	Dec. 31, 2018 USD ($) instrument
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Credit card guarantees	$ 489,000	$ 772,000
FHLB letters of credit	228,000,000.0	172,000,000.0
Lending-related Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for lending related commitments	$ 1,800,000	$ 1,400,000
Letter of credit \| FHLB
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of instruments \| instrument	21	16
Maximum borrowing capacity	$ 241,300,000	$ 186,600,000

Related Party Transactions - Loans to Executive Officers, Directors, and Their Affiliates (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Notes Receivable, Related Parties [Roll Forward]
Effect of changes in composition of related parties	$ (190)	$ (8,536)
Executive Officers, Directors, and their Affiliates
Notes Receivable, Related Parties [Roll Forward]
Balance, beginning of year	1,328	9,934
Advances	450	1,775
Principal repayments	(495)	(1,845)
Balance, end of year	1,093	1,328
Commitments to extend credit	$ 2,212	$ 3,420

Related Party Transactions - Narrative (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Related Party Transactions [Abstract]
Deposits from related parties	$ 27.0	$ 30.3

Business Combinations (Details) - USD ($) $ / shares in Units, $ in Thousands	Jul. 01, 2018	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 26,741	$ 26,741
DH Reeves, LLC
Business Acquisition [Line Items]
Total consideration	$ 9,500
Number of shares issued (in shares)	66,824
Share issue price ($ per share)	$ 40.50
Cash paid for acquisition	$ 6,800
Goodwill	4,500		4,500
Intangible assets acquired	$ 4,900		$ 4,900

Condensed Parent Company Only Financial Statements - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 291,518	$ 116,678
Other assets	110,930	83,768
Total assets	5,324,626	4,821,576
Liabilities and Stockholders' Equity
Junior subordinated debentures	9,671	9,644
Accrued expenses and other liabilities	69,891	33,791
Total liabilities	4,725,364	4,271,797
Stockholders' Equity
Common stock	117,405	118,633
Additional paid‑in capital	235,623	242,041
Retained earnings	239,901	191,585
Accumulated other comprehensive income (loss)	6,333	(2,480)
Total liabilities and stockholders' equity	5,324,626	4,821,576
Origin Bancorp, Inc.
Assets
Cash and cash equivalents	5,909	5,882
Investment in affiliates/subsidiaries	593,079	543,515
Other assets	10,531	10,393
Total assets	609,519	559,790
Liabilities and Stockholders' Equity
Junior subordinated debentures	9,671	9,644
Accrued expenses and other liabilities	586	367
Total liabilities	10,257	10,011
Stockholders' Equity
Common stock	117,405	118,633
Additional paid‑in capital	235,623	242,041
Retained earnings	239,901	191,585
Accumulated other comprehensive income (loss)	6,333	(2,480)
Total stockholders' equity	599,262	549,779
Total liabilities and stockholders' equity	$ 609,519	$ 559,790

Condensed Parent Company Only Financial Statements - Condensed Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Expenses:
Interest expense	$ 12,624	$ 14,184	$ 14,094	$ 12,468	$ 10,997	$ 9,345	$ 7,582	$ 6,720	$ 53,370	$ 34,644	$ 22,288
Salaries and employee benefits									88,974	80,487	70,862
Other									2,433	2,844	2,230
Income before income taxes	16,002	18,237	15,065	17,244	15,903	14,886	15,462	16,191	66,548	62,442	20,482
Income tax benefit	(3,175)	(3,620)	(2,782)	(3,089)	(2,725)	(2,568)	(2,760)	(2,784)	(12,666)	(10,837)	(5,813)
Equity in undistributed net income of subsidiaries									(6)	823	444
Net income	$ 12,827	$ 14,617	$ 12,283	$ 14,155	$ 13,178	$ 12,318	$ 12,702	$ 13,407	53,882	51,605	14,669
Origin Bancorp, Inc.
Income:
Dividends from subsidiaries									17,500	4,500	8,000
Other									470	2,052	41
Total income									17,970	6,552	8,041
Expenses:
Interest expense									7	0	0
Salaries and employee benefits									728	658	433
Other									2,121	2,015	1,384
Total expenses									2,856	2,673	1,817
Income before income taxes									15,114	3,879	6,224
Income tax benefit									502	84	477
Income before equity in undistributed net income of subsidiaries									15,616	3,963	6,701
Equity in undistributed net income of subsidiaries									38,266	47,642	7,968
Net income									$ 53,882	$ 51,605	$ 14,669

Condensed Parent Company Only Financial Statements - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 12,827	$ 14,617	$ 12,283	$ 14,155	$ 13,178	$ 12,318	$ 12,702	$ 13,407	$ 53,882	$ 51,605	$ 14,669
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes									(2,596)	5,637	4,931
Equity in undistributed net income of subsidiaries									6	(823)	(444)
Amortization of subordinated debentures discount									975	1,138	1,416
Stock compensation									2,247	1,462	1,150
Other, net									8,035	8,094	473
Net cash provided by operating activities									61,553	77,826	61,988
Cash flows from investing activities:
Net cash used in investing activities									(291,185)	(764,927)	(197,650)
Cash flows from financing activities:
Dividends paid									(5,863)	(5,941)	(6,996)
Taxes paid related to net share settlement of equity awards									0	(25)	(348)
Cash received on exercise of stock options									166	559	123
Proceeds from issuance of common stock									0	95,178	0
Payment to repurchase preferred stock									0	(48,260)	0
Net cash provided by financing activities									404,472	616,592	62,966
Net increase (decrease) in cash and cash equivalents									174,840	(70,509)	(72,696)
Cash and cash equivalents at beginning of period				116,678				187,187	116,678	187,187	259,883
Cash and cash equivalents at end of period	291,518				116,678				291,518	116,678	187,187
Origin Bancorp, Inc.
Cash flows from operating activities:
Net income									53,882	51,605	14,669
Adjustments to reconcile net income to net cash provided by operating activities:
Deferred income taxes									9	9	11
Equity in undistributed net income of subsidiaries									(38,266)	(47,642)	(7,968)
Amortization of subordinated debentures discount									28	25	23
Stock compensation									283	356	78
Other, net									(153)	(2,543)	5,488
Net cash provided by operating activities									15,783	1,810	12,301
Cash flows from investing activities:
Capital contributed to subsidiaries									0	(45,794)	0
Net purchases of non-marketable equity securities held in other financial institutions									0	(2,213)	(2,065)
Net cash used in investing activities									0	(48,007)	(2,065)
Cash flows from financing activities:
Dividends paid									(5,863)	(5,941)	(6,996)
Taxes paid related to net share settlement of equity awards									0	(23)	(410)
Cash received on exercise of stock options									166	559	186
Proceeds from issuance of common stock									0	95,178	0
Payment to repurchase preferred stock									(10,059)	(48,260)	0
Net cash provided by financing activities									(15,756)	41,513	(7,220)
Net increase (decrease) in cash and cash equivalents									27	(4,684)	3,016
Cash and cash equivalents at beginning of period				$ 5,882				$ 10,566	5,882	10,566	7,550
Cash and cash equivalents at end of period	$ 5,909				$ 5,882				$ 5,909	$ 5,882	$ 10,566

Summary of Quarterly Financial Statements (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]
Total interest income	$ 56,719	$ 58,806	$ 57,063	$ 54,494	$ 53,058	$ 48,842	$ 44,752	$ 41,444	$ 227,082	$ 188,096	$ 152,593
Total interest expense	12,624	14,184	14,094	12,468	10,997	9,345	7,582	6,720	53,370	34,644	22,288
Net interest income	44,095	44,622	42,969	42,026	42,061	39,497	37,170	34,724	173,712	153,452	130,305
Provision (benefit) for credit losses	2,377	4,201	1,985	1,005	1,723	504	311	(1,524)	9,568	1,014	8,336
Net interest income after provision for credit losses	41,718	40,421	40,984	41,021	40,338	38,993	36,859	36,248	164,144	152,438	121,969
Non-interest income, exclusive of gain (loss) on sales of securities, net	10,818	12,860	11,176	11,604	10,596	10,237	10,615	9,800
Gain (loss) on sales of securities, net	0	20	0	0	(8)	0	0	0	20	(8)	0
Non-interest expense	36,534	35,064	37,095	35,381	35,023	34,344	32,012	29,857	144,074	131,236	130,674
Income before income taxes	16,002	18,237	15,065	17,244	15,903	14,886	15,462	16,191	66,548	62,442	20,482
Income tax expense	3,175	3,620	2,782	3,089	2,725	2,568	2,760	2,784	12,666	10,837	5,813
Net income	$ 12,827	$ 14,617	$ 12,283	$ 14,155	13,178	12,318	12,702	13,407	53,882	51,605	14,669
Less preferred stock dividends					0	0	808	1,115	0	1,923	4,461
Less income allocated to participating stockholders					86	54	40	553	0	1,029	377
Net income available to common stockholders					$ 13,092	$ 12,264	$ 11,854	$ 11,739	$ 53,882	$ 48,653	$ 9,831
Basic earnings per common share ($ per share)	$ 0.55	$ 0.62	$ 0.52	$ 0.60	$ 0.56	$ 0.52	$ 0.54	$ 0.60	$ 2.30	$ 2.21	$ 0.51
Diluted earnings per common share ($ per share)	$ 0.55	$ 0.62	$ 0.52	$ 0.60	$ 0.55	$ 0.52	$ 0.53	$ 0.60	$ 2.28	$ 2.20	$ 0.50

Subsequent Events (Details) - Subsequent Event $ in Millions	Feb. 06, 2020 USD ($)
Subsequent Event [Line Items]
Aggregate principal amount	$ 70
Fixed interest rate	4.25%
LIBOR
Subsequent Event [Line Items]
Basis spread on variable rate	2.82%

Label	Element	Value
AOCI Attributable to Parent [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 282,000

Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	$ 4,143,195	$ 3,789,105
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	4,035,471	3,670,261
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	42,664	39,364
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	65,060	79,480
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	2,504,090	2,287,776
Real estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	2,462,440	2,250,960
Real estate \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	14,186	4,400
Real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	27,464	32,416
Real estate \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	1,296,847	1,228,402
Real estate \| Commercial real estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	1,269,493	1,206,194
Real estate \| Commercial real estate \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	12,479	3,101
Real estate \| Commercial real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	14,875	19,107
Real estate \| Commercial real estate \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Commercial real estate \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Construction/land/land development
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	517,688	429,660
Real estate \| Construction/land/land development \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	512,901	426,770
Real estate \| Construction/land/land development \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	149	157
Real estate \| Construction/land/land development \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	4,638	2,733
Real estate \| Construction/land/land development \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Construction/land/land development \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	689,555	629,714
Real estate \| Residential real estate \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	680,046	617,996
Real estate \| Residential real estate \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	1,558	1,142
Real estate \| Residential real estate \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	7,951	10,576
Real estate \| Residential real estate \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Real estate \| Residential real estate \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	1,343,475	1,272,566
Commercial and industrial \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	1,277,564	1,190,718
Commercial and industrial \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	28,478	34,964
Commercial and industrial \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	37,433	46,884
Commercial and industrial \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Commercial and industrial \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	274,659	207,871
Mortgage warehouse lines of credit \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	274,659	207,871
Mortgage warehouse lines of credit \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	20,971	20,892
Consumer \| Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	20,808	20,712
Consumer \| Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Consumer \| Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	163	180
Consumer \| Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	0	0
Consumer \| Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans held for investment	$ 0	$ 0