Origin Bancorp (OBK) 10-Q 6 May 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2020	May 01, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
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 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 Common Stock, Shares Outstanding		23,475,948
Entity CIK	0001516912
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--12-31
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 91,104	$ 62,160
Interest-bearing deposits in banks	469,075	229,358
Total cash and cash equivalents	560,179	291,518
Securities:
Available for sale	601,637	501,070
Held to maturity, net of allowance for credit losses of $96 at March 31, 2020 (fair value of $29,400 and $29,523 at March 31, 2020, and December 31, 2019, respectively)	28,383	28,620
Securities carried at fair value through income	12,242	11,513
Non-marketable equity securities held in other financial institutions	642,262	541,203
Non-marketable equity securities held in other financial institutions	52,267	39,808
Loans held for sale ($46,348 and $36,977 at fair value, respectively)	75,322	64,837
Loans, net of allowance for credit losses of $56,063 and $37,520, respectively ($17,589 and $17,670 at fair value, respectively)	4,425,122	4,105,675
Premises and equipment, net	80,193	80,457
Mortgage servicing rights	16,122	20,697
Cash surrender value of bank-owned life insurance	36,874	37,961
Goodwill and other intangible assets, net	31,241	31,540
Accrued interest receivable and other assets	130,056	110,930
Total assets	6,049,638	5,324,626
Liabilities and Stockholders' Equity
Noninterest-bearing deposits	1,115,811	1,077,706
Interest-bearing deposits	2,673,881	2,360,096
Time deposits	766,554	790,810
Total deposits	4,556,246	4,228,612
Federal Home Loan Bank (FHLB) advances and other borrowings	716,909	417,190
Subordinated debentures, net	78,539	9,671
Accrued expenses and other liabilities	91,313	69,891
Total liabilities	5,443,007	4,725,364
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; 23,475,948 and 23,480,945 shares issued at March 31, 2020, and December 31, 2019, respectively)	117,380	117,405
Additional paid‑in capital	235,709	235,623
Retained earnings	237,720	239,901
Accumulated other comprehensive income	15,822	6,333
Total stockholders' equity	606,631	599,262
Total liabilities and stockholders' equity	$ 6,049,638	$ 5,324,626

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Municipal securities	$ 96	$ 0
Securities held to maturity, fair value	29,400	29,523
Loans held for sale at fair value	46,348	36,977
Loans, allowance for credit losses	56,063	37,520
Loans at fair value	$ 17,589	$ 17,670
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Common stock, par value ($ per share)	$ 5	$ 5
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, shares issued (in shares)	23,475,948	23,480,945
Common stock, shares, outstanding (in shares)	23,475,948	23,480,945

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest and dividend income
Interest and fees on loans	$ 50,049	$ 49,175
Investment securities-taxable	2,712	3,341
Investment securities-nontaxable	758	858
Interest and dividend income on assets held in other financial institutions	1,497	1,120
Total interest and dividend income	55,016	54,494
Interest expense
Interest-bearing deposits	10,250	10,497
FHLB advances and other borrowings	1,351	1,834
Subordinated debentures	605	137
Total interest expense	12,206	12,468
Net interest income	42,810	42,026
Provision for credit losses	18,531	1,005
Net interest income after provision for credit losses	24,279	41,021
Noninterest income
Mortgage banking revenue	2,769	2,606
Gain on sales of securities, net	54	0
(Loss) on sales and disposals of other assets, net	(25)	3
Limited partnership investment (loss) income	(429)	400
Swap fee income	676	511
Other fee income	466	276
Other income	1,626	982
Total noninterest income	12,144	11,604
Noninterest expense
Salaries and employee benefits	21,988	22,613
Occupancy and equipment, net	4,221	4,044
Data processing	2,003	1,587
Electronic banking	900	689
Communications	477	586
Advertising and marketing	711	798
Professional services	1,171	904
Regulatory assessments	615	711
Loan related expenses	1,142	669
Office and operations	1,441	1,481
Intangible asset amortization	299	364
Franchise tax expense	496	489
Other expenses	633	446
Total noninterest expense	36,097	35,381
Income before income tax (benefit) expense	326	17,244
Income tax (benefit) expense	(427)	3,089
Net income	$ 753	$ 14,155
Basic earnings per common share ($ per share)	$ 0.03	$ 0.60
Diluted earnings per common share ($ per share)	$ 0.03	$ 0.60
Service charges and fees
Noninterest income
Revenue from contracts with customers	$ 3,320	$ 3,316
Insurance commission and fee income
Noninterest income
Revenue from contracts with customers	$ 3,687	$ 3,510

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 753	$ 14,155
Securities available for sale and transferred securities:
Net unrealized holding gain arising during the period	12,771	5,165
Net losses realized as a yield adjustment in interest on investment securities	(3)	(3)
Reclassification adjustment for net gain included in net income	(54)	0
Change in the net unrealized gain on investment securities, before tax	12,714	5,162
Income tax expense related to net unrealized gain arising during the period	2,670	1,084
Change in the net unrealized gain on investment securities, net of tax	10,044	4,078
Cash flow hedges:
Net unrealized loss arising during the period	(710)	(80)
Reclassification adjustment for (loss) gain included in net income	(8)	14
Change in the net unrealized (loss) on cash flow hedges, before tax	(702)	(94)
Income tax expense related to net unrealized (loss) on cash flow hedges	(147)	(20)
Change in the net unrealized (loss) on cash flow hedges, net of tax	(555)	(74)
Other comprehensive income, net of tax	9,489	4,004
Comprehensive income	$ 10,242	$ 18,159

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (loss)
Shares outstanding, beginning balance (in shares) at Dec. 31, 2018		23,726,559
Stockholders' equity, beginning balance at Dec. 31, 2018	$ 549,779	$ 118,633	$ 242,041	$ 191,585	$ (2,480)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,155			14,155
Other comprehensive income, net of tax	4,004				4,004
Recognition of stock compensation, net (in shares)		19,426
Recognition of stock compensation, net	635	$ 97	538
Dividends declared - common stock	(772)			(772)
Shares outstanding, ending balance (in shares) at Mar. 31, 2019		23,745,985
Stockholders' equity, ending balance at Mar. 31, 2019	$ 568,122	$ 118,730	242,579	205,289	1,524
Shares outstanding, beginning balance (in shares) at Dec. 31, 2019	23,480,945	23,480,945
Stockholders' equity, beginning balance at Dec. 31, 2019	$ 599,262	$ 117,405	235,623	239,901	6,333
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	753			753
Other comprehensive income, net of tax	9,489				9,489
Recognition of stock compensation, net (in shares)		25,871
Recognition of stock compensation, net	784	$ 129	655
Dividends declared - common stock	(2,174)			(2,174)
Repurchase of common stock (in shares)		(30,868)
Repurchase of common stock	$ (723)	$ (154)	(569)
Shares outstanding, ending balance (in shares) at Mar. 31, 2020	23,475,948	23,475,948
Stockholders' equity, ending balance at Mar. 31, 2020	$ 606,631	$ 117,380	$ 235,709	$ 237,720	$ 15,822

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Common stock dividends declared ($ per share)	$ 0.0325	$ 0.0925

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Cash flows from operating activities:
Net income	$ 753		$ 14,155
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for credit losses	18,531		1,005
Depreciation and amortization	1,735		1,597
Net amortization on securities	552		32
Amortization of investments in tax credit funds	368		405
Net realized gain on securities sold	(54)	$ (54)	0
Deferred income tax (benefit)	(4,122)		(346)
Stock-based compensation expense	537		470
Originations of mortgage loans held for sale	(97,987)		(46,100)
Proceeds from mortgage loans held for sale	87,528		49,507
Gain on mortgage loans held for sale, including origination of servicing rights	(1,873)		(1,097)
Mortgage servicing rights valuation adjustment	5,228		1,990
Net loss (gain) on disposals of premises and equipment	1		(11)
Increase in the cash surrender value of life insurance	(554)		(182)
Net loss on sales and write downs of other real estate owned	24		8
Other operating activities, net	(2,939)		(3,103)
Net cash provided by operating activities	7,728		18,330
Cash flows from investing activities:
Purchases of securities available for sale	(131,064)		(6,825)
Maturities and paydowns of securities available for sale	26,440		23,777
Proceeds from sales and calls of securities available for sale	22,375		0
Maturities, paydowns and calls of securities held to maturity	138		135
Net purchases of non-marketable equity securities held in other financial institutions	(12,306)		(22)
Originations of mortgage warehouse loans	(1,259,966)		(786,112)
Proceeds from pay-offs of mortgage warehouse loans	1,097,367		791,239
Net increase in loans, excluding mortgage warehouse and loans held for sale	(174,836)		(49,377)
Bank-owned life insurance payout	1,641		0
Return of capital on limited partnership investments	0		75
Capital calls on limited partnership investments	(150)		0
Purchases of premises and equipment	(1,173)		(5,058)
Proceeds from sales of premises and equipment	0		11
Proceeds from sales of other real estate owned	20		72
Net cash used in investing activities	(431,514)		(32,085)
Cash flows from financing activities:
Net increase in deposits	327,634		115,110
Repayments on long-term FHLB advances	(211)		(207)
Proceeds from short-term FHLB advances	400,000		505,000
Repayments on short-term FHLB advances	(100,000)		(605,000)
Issuance of subordinated debentures, net	68,847		0
Net decrease in securities sold under agreements to repurchase	(1,184)		(5,983)
Dividends paid	(2,164)		(768)
Cash received from exercise of stock options	248		165
Common stock repurchased	(723)		0
Net cash provided by financing activities	692,447		8,317
Net increase (decrease) in cash and cash equivalents	268,661		(5,438)
Cash and cash equivalents at beginning of period	291,518		116,678
Cash and cash equivalents at end of period	560,179	$ 291,518	111,240
Interest paid	11,965		12,106
Income taxes paid	0		0
Significant non-cash transactions:
Unsettled liability for investment purchases recorded at trade date	8,760		0
Real estate acquired in settlement of loans	$ 588		$ 0

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
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 from Dallas/Fort Worth, Texas across North Louisiana to Central Mississippi, as well as in Houston, Texas. The Company principally operates in one business segment, community banking. Basis of Presentation . The condensed consolidated financial statements in this quarterly report on Form 10-Q 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, doing business as Thomas & Farr Agency and Reeves, Coon and Funderburg. All significant intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements in this quarterly report on Form 10-Q have not been audited by an independent registered public accounting firm, excluding the figures as of December 31, 2019, but in the opinion of management, reflect all adjustments necessary for a fair presentation of the Company's financial position and results of operations for the periods presented. These condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") and with the rules and regulations of the Securities and Exchange Commission (the "SEC") for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2019, included in the Company's annual report on Form 10-K ("2019 Form 10-K") filed with the SEC. Operating results for the interim periods disclosed herein are not necessarily indicative of results that may be expected for a full year. Certain prior year amounts have been reclassified to conform to the current year financial statement presentations. These reclassifications did not impact previously reported net income or comprehensive income. The Company's significant accounting policies, including those for loans and allowance for loan and lease losses, are described in Note 1 of the Notes to Consolidated Financial Statements for the year ended December 31, 2019, included in the Company's 2019 Form 10-K ("Note 1"). Due to the adoption of ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("CECL") the significant accounting policies for loans and the allowance for credit losses have changed since December 31, 2019, as described below. Except for the changes related to CECL, there have been no changes to the Company's significant accounting policies since December 31, 2019. While federal legislators have allowed for the option to defer implementation of the CECL methodology, effective January 1, 2020, the Company adopted CECL resulting in a change to the Company's reporting of credit losses for assets held at amortized cost basis and available for sale debt securities. See the discussion below titled "Effect of Recently Adopted Accounting Standards" for a description of policy revisions resulting from the Company's adoption of ASU 2016-13. For interim reporting purposes, the Company follows the same accounting policies and considers each interim period as an integral part of an annual period. Use of Estimates . The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions based on available information that affect the amounts reported in the financial statements and disclosures provided, including the accompanying notes, and actual results could differ. Material estimates that are particularly susceptible to change include the allowance for credit losses for loans and available for sale securities; fair value measurements of assets and liabilities; and income taxes. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the Company's consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual results could differ from those estimates. Earnings Per Share . Basic and diluted earnings per common share 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. Effect of Recently Adopted Accounting Standards ASC Topic 326, Financial Instruments - Credit Losses introduces 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 that are not unconditionally cancellable by the Company. Expected credit losses related to off-balance sheet exposures are presented as a liability. The allowance for loan credit losses represents the estimated losses for financial assets accounted for on an amortized cost basis. Expected losses are calculated using relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The Company evaluates loans held for investment ("LHFI") on a pool basis with pools of loans characterized by loan type, collateral, industry, internal credit risk rating and FICO score. The Company applied a probability of default, loss given default loss methodology to the loan pools at January 1 and March 31, 2020. Historical loss rates for each pool are calculated based on charge-off and recovery data beginning with the second quarter of 2012. These loss rates are adjusted for differences between current period conditions and the conditions existing during the historical loss period. Historical losses are additionally adjusted for the effects of certain economic variables forecast over a one-year period. Subsequent to the forecast effects, historical loss rates are used to estimate losses over the estimated remaining lives of the loans. The estimated remaining lives consist of the contractual lives, adjusted for estimated prepayments. Loans that exhibit characteristics different from their pool characteristics are evaluated on an individual basis. Certain of these loans are considered to be collateral dependent with the borrower experiencing financial difficulty. For these loans, the fair value of collateral practical expedient is elected whereby the allowance is calculated as the amount by which the amortized cost exceeds the fair value of collateral, less costs to sell (if applicable). Those individual loans that are not collateral dependent are evaluated based on a discounted cash flow methodology. 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 more likely to default and impact management's estimates of loss factors used in determining the amount of the allowance for loan credit losses. Internal risk ratings are updated on a regular basis. Troubled debt restructurings ("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. The allowance for off-balance sheet exposures was determined using the same methodology that is applied to LHFI. Utilization rates are determined based on historical usage. The allowance for credit losses for held-to-maturity securities is calculated using a probability of default, loss given default methodology. Credit losses are estimated over the lives of the securities using historical loss rates, adjusted for current conditions and reasonable and supportable forecasts. Third party data are used for the historical loss rates and probability of default statistics. A weighted average of three possible economic scenarios is used to calculate the forecast effect. The forecast effect is applied over the estimated lives of the securities. Credit losses related to available for sale debt securities are recorded through an allowance for credit losses. The amount of the allowance for credit losses is limited to the amount by which fair value is below amortized cost. Discounted cash flow analysis is required for determining credit losses for available for sale securities. In determining whether or not a credit loss exists, such factors as extent of the loss, adverse conditions related to the entity, industry or geographic region, security structure, ratings and changes by a rating agency and past performance are considered. The length of time a security has been in an unrealized loss position is not a factor in determining whether a credit loss exists. The accounting for credit losses for available for sale securities is prospective, and therefore requires no transition effect. The Company made the following policy elections related to the adoption of the guidance in Topic 326: • Accrued interest will be written off against interest income when financial assets are placed into nonaccrual status. Therefore, accrued interest will be excluded from the amortized cost basis for purposes of calculating the allowance for credit losses. Accrued interest receivable is presented with other assets in a separate line item in the consolidated balance sheet. • The fair value of collateral practical expedient has been elected on certain loans, in determining the allowance for credit losses, for which the repayment is expected to be provided substantially through the operation or sale of the collateral when the borrower is experiencing financial difficulty. • For credit loss estimates calculated using a discounted cash flow approach, the entire change in present value is reported in credit loss expense rather than being attributed to interest income. The adoption of ASC Topic 326 has been recorded as a cumulative effect adjustment to retained earnings. The adjustment that was recorded as of January 1, 2020 is shown below. (Dollars in thousands) December 31, 2019 ALLL Balance Transition Adjustment January 1, 2020 ACL Balance LHFI: Loans secured by real estate: Commercial real estate $ 10,013 $ (5,052 ) $ 4,961 Construction/land/land development 3,711 1,141 4,852 Residential real estate 6,332 (2,526 ) 3,806 Total real estate 20,056 (6,437 ) 13,619 Commercial and industrial 16,960 7,296 24,256 Mortgage warehouse lines of credit 262 29 291 Consumer 242 360 602 Total allowance for credit losses on loans $ 37,520 $ 1,248 $ 38,768 (Dollars in thousands) December 31, 2019 Liability Balance Transition Adjustment January 1, 2020 ACL Balance Reserve for off-balance sheet exposures $ 1,810 $ (381 ) $ 1,429 Held-to-Maturity Securities: Municipal securities $ 96 $ 96 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 were effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company implemented these amendments as of January 1, 2020. Effect of Newly Issued But Not Yet Effective Accounting Standards There are no newly issued but not yet effective accounting standards, except for minor clarifications, that impact the Company as of March 31, 2020.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Earnings Per Share	Note 2 - Earnings Per Share (Dollars in thousands, except per share amounts) Three Months Ended March 31, 2020 2019 Numerator: Net income (basic and diluted) $ 753 $ 14,155 Denominator: Weighted average common shares outstanding 23,353,601 23,569,576 Dilutive effect of stock-based awards 176,611 206,773 Weighted average diluted common shares outstanding 23,530,212 23,776,349 Basic earnings per common share $ 0.03 $ 0.60 Diluted earnings per common share $ 0.03 $ 0.60

Securities

Securities	3 Months Ended
	Mar. 31, 2020
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 the allowance for credit losses and 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) Amortized Allowance for Credit Losses Net Carrying Amount Gross Gross Fair March 31, 2020 Available for sale: State and municipal securities $ 160,828 $ — $ 160,828 $ 7,592 $ (458 ) $ 167,962 Corporate bonds 18,943 — 18,943 555 (39 ) 19,459 U.S. government and agency securities 4,522 — 4,522 250 (7 ) 4,765 Commercial mortgage-backed securities 11,781 — 11,781 378 — 12,159 Residential mortgage-backed securities 221,766 — 221,766 7,953 — 229,719 Commercial collateralized mortgage obligations 12,356 — 12,356 123 — 12,479 Residential collateralized mortgage obligations 150,714 — 150,714 4,380 — 155,094 Total $ 580,910 $ — $ 580,910 $ 21,231 $ (504 ) $ 601,637 Held to maturity: State and municipal securities $ 28,479 $ (96 ) $ 28,383 $ 921 $ — $ 29,400 Securities carried at fair value through income: State and municipal securities (1) $ 11,070 $ — $ 11,070 $ — $ — $ 12,242 (Dollars in thousands) Amortized Gross Gross Fair December 31, 2019 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 ____________________________ (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 condensed consolidated statements of income. See Note 5 - Fair Value of Financial Instruments for more information. Securities with unrealized losses at March 31, 2020 , and December 31, 2019 , 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: (Dollars in thousands) Less than 12 Months 12 Months or More Total March 31, 2020 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available for sale: State and municipal securities $ 13,402 $ (458 ) $ — $ — $ 13,402 $ (458 ) Corporate bonds 2,961 (39 ) — — 2,961 (39 ) U.S. government and agency securities — — 622 (7 ) 622 (7 ) Total $ 16,363 $ (497 ) $ 622 $ (7 ) $ 16,985 $ (504 ) December 31, 2019 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 ) Management evaluates available for sale debt securities in unrealized loss positions to determine whether the impairment is due to credit-related factors or noncredit-related factors. Consideration is given to (1) the extent to which the fair value is less than cost, (2) the financial condition and near-term prospects of the issuer, and (3) the intent and ability of the Company to retain its investment in the security for a period of time sufficient to allow for any anticipated recovery in fair value. At March 31, 2020, the Company had 24 available for sale debt securities in an unrealized loss position without an allowance for credit losses. Management does not have the intent to sell any of these securities and believes that it is more likely than not that the Company will not have to sell any such securities before a recovery of cost. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. Accordingly, as of March 31, 2020, management believes that the unrealized losses detailed in the previous table are due to noncredit-related factors, including changes in interest rates and other market conditions, and therefore no losses have been recognized in the Company’s consolidated statements of income. The following table details activity in the allowance for credit losses for held-to-maturity debt securities. (Dollars in thousands) Municipal Securities Allowance for credit losses: Balance at January 1, 2020 $ — Impact of adopting ASC 326 96 Credit loss expense — Balance at March 31, 2020 $ 96 Accrued interest of $2.7 million was not included in the calculation of the allowance at March 31, 2020 . There were no past due held-to-maturity securities at March 31, 2020 . No held-to-maturity securities were in nonaccrual status at March 31, 2020 , or placed into nonaccrual status during the first quarter of 2020. Proceeds from sales and calls of securities available for sale and gross gains for the period indicated are shown below. There were no sales of securities available for sale for the three months ended March 31, 2019. (Dollars in thousands) Three Months Ended March 31, 2020 Proceeds from sales/calls $ 22,375 Gross realized gains 103 Gross realized losses (49 ) Tax expense related to securities gains/losses 11 The following table presents the amortized cost and fair value of securities available for sale and held to maturity at March 31, 2020 , 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 March 31, 2020 Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ — $ — $ 3,485 $ 3,517 Due after one year through five years 13,276 13,483 44,155 46,082 Due after five years through ten years 15,203 15,917 54,978 57,246 Due after ten years — — 81,675 85,341 Commercial mortgage-backed securities — — 11,781 12,159 Residential mortgage-backed securities — — 221,766 229,719 Commercial collateralized mortgage obligations — — 12,356 12,479 Residential collateralized mortgage obligations — — 150,714 155,094 Total $ 28,479 $ 29,400 $ 580,910 $ 601,637 The following table presents carrying amounts of securities pledged as collateral for public deposits and repurchase agreements as of the dates presented. (Dollars in thousands) March 31, 2020 December 31, 2019 Carrying value of securities pledged to secure public deposits $ 171,262 $ 285,552 Carrying value of securities pledged to repurchase agreements 19,664 20,356

Loans

Loans	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Loans	Note 4 - Loans Loans consisted of the following: (Dollars in thousands) March 31, 2020 December 31, 2019 Loans held for sale $ 75,322 $ 64,837 LHFI: Loans secured by real estate: Commercial real estate $ 1,284,931 $ 1,279,177 Construction/land/land development 563,820 517,688 Residential real estate 703,263 689,555 Total real estate 2,552,014 2,486,420 Commercial and industrial 1,455,497 1,343,475 Mortgage warehouse lines of credit 437,257 274,659 Consumer 18,828 20,971 Total loans accounted for at amortized cost 4,463,596 4,125,525 Loan accounted for at fair value 17,589 17,670 Total LHFI (1) 4,481,185 4,143,195 Less: allowance for credit losses 56,063 37,520 Net LHFI $ 4,425,122 $ 4,105,675 ____________________________ (1) Includes net deferred loan fees of $4.0 million and $3.6 million at March 31, 2020 , and December 31, 2019 , respectively. Included in total LHFI were $17.6 million and $17.7 million of commercial real estate loans for which the fair value option was elected as of March 31, 2020 , and December 31, 2019 , 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 has 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. In connection with the review of the loan portfolio, the Company considers risk elements attributable to particular loan types or categories in assessing the quality of individual loans. Some of the risk elements considered include: • for commercial real estate loans, the debt service coverage ratio, operating results of the owner in the case of owner occupied properties, the loan to value ratio, the age and condition of the collateral and the volatility of income, property value and future operating results typical of properties of that type; • for construction, land and land development loans, the perceived feasibility of the project, including the ability to sell developed lots or improvements constructed for resale or the ability to lease property constructed for lease, the quality and nature of contracts for presale or prelease, if any, experience and ability of the developer and loan to value ratio; • for residential mortgage loans, the borrower's ability to repay the loan, including a consideration of the debt to income ratio and employment and income stability, the loan-to-value ratio, and the age, condition and marketability of the collateral; and • for commercial and industrial loans, the debt service coverage ratio (income from the business in excess of operating expenses compared to loan repayment requirements), the operating results of the commercial, industrial or professional enterprise, the borrower's business, professional and financial ability and expertise, the specific risks and volatility of income and operating results typical for businesses in that category and the value, nature and marketability of collateral. The following table reflects recorded investments in loans by credit quality indicator and origination year at March 31, 2020 , excluding loans held for sale and loans accounted for at fair value. The Company had an immaterial amount of revolving loans converted to terms loans at March 31, 2020 . Term Loans Amortized Cost Basis by Origination Year 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Commercial real estate: (1) Risk rating: Pass $ 101,330 $ 302,613 $ 349,746 $ 193,121 $ 82,816 $ 197,807 $ 23,046 $ 1,250,479 Special mention — — 416 — — 11,907 350 12,673 Classified — 1,019 5,196 13,277 242 1,970 75 21,779 Total commercial real estate loans $ 101,330 $ 303,632 $ 355,358 $ 206,398 $ 83,058 $ 211,684 $ 23,471 $ 1,284,931 Current-period gross writeoffs $ — $ — $ — $ 150 $ — $ 22 $ — $ 172 Current-period recoveries — — — — — 2 — 2 Current period net writeoffs $ — $ — $ — $ 150 $ — $ 20 $ — $ 170 (1) Excludes $17.6 million of commercial real estate loans at fair value, which are not included in the loss estimation methodology due to the fair value option election. Construction/land/land development: Risk rating: Pass $ 45,874 $ 203,582 $ 210,678 $ 69,863 $ 9,583 $ 2,191 $ 16,447 $ 558,218 Special mention 336 146 — — — — — 482 Classified — 1,232 384 3,220 98 186 — 5,120 Total construction/land/land development loans $ 46,210 $ 204,960 $ 211,062 $ 73,083 $ 9,681 $ 2,377 $ 16,447 $ 563,820 Current-period gross writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Current-period recoveries — — — — — — — — Current period net writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Residential real estate: Risk rating: Pass $ 40,894 $ 196,502 $ 115,661 $ 122,452 $ 59,959 $ 108,855 $ 50,656 $ 694,979 Special mention 198 — 30 1,061 — — — 1,289 Classified 11 2,579 1,699 365 890 1,249 202 6,995 Total residential real estate loans $ 41,103 $ 199,081 $ 117,390 $ 123,878 $ 60,849 $ 110,104 $ 50,858 $ 703,263 Current-period gross writeoffs $ — $ 42 $ — $ 7 $ — $ — $ — $ 49 Current-period recoveries — — — — — 149 — 149 Current period net writeoffs (recoveries) $ — $ 42 $ — $ 7 $ — $ (149 ) $ — $ (100 ) Term Loans Amortized Cost Basis by Origination Year 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Commercial and industrial: Risk rating: Pass $ 126,922 $ 253,195 $ 185,905 $ 70,454 $ 23,380 $ 42,005 $ 683,276 $ 1,385,137 Special mention 300 297 1,568 954 6,196 18,737 1,700 29,752 Classified 608 11,415 2,031 2,472 9,769 5,226 9,087 40,608 Total commercial and industrial loans $ 127,830 $ 264,907 $ 189,504 $ 73,880 $ 39,345 $ 65,968 $ 694,063 $ 1,455,497 Current-period gross writeoffs $ — $ — $ 63 $ 56 $ 108 $ 131 $ 822 $ 1,180 Current-period recoveries — 12 20 55 47 29 6 169 Current period net (recoveries) writeoffs $ — $ (12 ) $ 43 $ 1 $ 61 $ 102 $ 816 $ 1,011 Mortgage Warehouse Lines of Credit: Risk rating: Pass $ — $ — $ — $ — $ — $ — $ 437,257 $ 437,257 Current-period gross writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Current-period recoveries — — — — — — — — Current period net writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Consumer: Risk rating: Pass $ 1,588 $ 6,844 $ 3,029 $ 607 $ 281 $ 156 $ 6,142 $ 18,647 Classified 1 17 72 23 11 36 21 181 Total consumer loans $ 1,589 $ 6,861 $ 3,101 $ 630 $ 292 $ 192 $ 6,163 $ 18,828 Current-period gross writeoffs $ — $ 6 $ 4 $ 10 $ — $ 4 $ — $ 24 Current-period recoveries — — — — 1 2 1 4 Current period net writeoffs (recoveries) $ — $ 6 $ 4 $ 10 $ (1 ) $ 2 $ (1 ) $ 20 The recorded investment in loans by credit quality indicator at December 31, 2019, excluding loans held for sale, were as follows: December 31, 2019 (Dollars in thousands) Pass Special Mention Substandard Doubtful Loss Total Loans secured by real estate: 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 LHFI $ 4,035,471 $ 42,664 $ 65,060 $ — $ — $ 4,143,195 The following tables present the Company's loan portfolio aging analysis at the dates indicated: March 31, 2020 (Dollars in thousands) 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 Loans secured by real estate: Commercial real estate $ 7,890 $ 665 $ 6,427 $ 14,982 $ 1,287,538 $ 1,302,520 $ — Construction/land/land development 9,612 26 — 9,638 554,182 563,820 — Residential real estate 5,135 126 621 5,882 697,381 703,263 — Total real estate 22,637 817 7,048 30,502 2,539,101 2,569,603 — Commercial and industrial 6,902 312 13,073 20,287 1,435,210 1,455,497 — Mortgage warehouse lines of credit — — — — 437,257 437,257 — Consumer 165 53 11 229 18,599 18,828 — Total LHFI $ 29,704 $ 1,182 $ 20,132 $ 51,018 $ 4,430,167 $ 4,481,185 $ — December 31, 2019 (Dollars in thousands) 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 Loans secured by real estate: 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 LHFI $ 8,412 $ 3,123 $ 18,445 $ 29,980 $ 4,113,215 $ 4,143,195 $ — As of April 30, 2020, the Company had 1,242 loans totaling $880.2 million in COVID-19 related forbearance. The following tables detail activity in the allowance for credit losses by portfolio segment. Accrued interest of $12.6 million was not included in the book value for the purposes of calculating the allowance at March 31, 2020 . Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Three Months Ended March 31, 2020 (Dollars in thousands) Beginning Balance Impact of Adopting ASC 326 Charge-offs Recoveries Provision (1) Ending Balance Loans secured by real estate: Commercial real estate $ 10,013 $ (5,052 ) $ 172 $ 2 $ 4,463 $ 9,254 Construction/land/land development 3,711 1,141 — — 202 5,054 Residential real estate 6,332 (2,526 ) 49 149 589 4,495 Commercial and industrial 16,960 7,296 1,180 169 12,578 35,823 Mortgage warehouse lines of credit 262 29 — — 488 779 Consumer 242 360 24 4 76 658 Total $ 37,520 $ 1,248 $ 1,425 $ 324 $ 18,396 $ 56,063 ____________________________ (1) The $18.5 million provision for credit losses on the condensed consolidated statements of income includes a $18.4 million net loan loss provision and a $135,000 provision for off-balance sheet commitments for the three months ended March 31, 2020 . The provision for loan credit losses for the first quarter of 2020 was driven by a significant increase in uncertainty related to the economic impact of the current COVID-19 pandemic. Based upon the requirement of CECL, economic forecasts are essential for estimating the life of loan losses. For periods prior to January 1, 2020, the incurred loss model did not require a life of loan loss estimation. The increased risk, as reflected in current and forecast adjustments, resulted in approximately $11.2 million in provision expense across the Company’s risk pools. An additional $6.0 million in provision expense was due to the current and forecast effects of individually evaluated loans. The provision for commercial real estate loans includes approximately $3.0 million in increased credit allowances related to individually evaluated loans. The provision for commercial and industrial loans includes $5.4 million related to current and forecast factors as well as approximately $3.0 million related to individually evaluated loans. The only significant charge-off in commercial and industrial loans during the first quarter of 2020 was for $732,000 on an operating loan secured by equipment. Three Months Ended March 31, 2019 (Dollars in thousands) Beginning Balance Charge-offs Recoveries Provision (Benefit) (1) Ending Balance Loans secured by real estate: Commercial real estate $ 8,999 $ 89 $ 51 $ 297 $ 9,258 Construction/land/land development 3,331 — 1 347 3,679 Residential real estate 5,705 — 27 (155 ) 5,577 Commercial and industrial 15,616 511 1,074 296 16,475 Mortgage warehouse lines of credit 316 — — 49 365 Consumer 236 8 7 (11 ) 224 Total $ 34,203 $ 608 $ 1,160 $ 823 $ 35,578 ____________________________ (1) The $1.0 million provision for credit losses on the condensed consolidated statements of income includes a $823,000 net loan loss provision and a $182,000 release of provision for off-balance sheet commitments for the three months ended March 31, 2019 . The following table shows the recorded investment in loans by loss estimation methodology at March 31, 2020. March 31, 2020 Collectively Evaluated Individually Evaluated (Dollars in thousands) Probability of Default Fair Value of Collateral Discounted Cash Flow Total Loans secured by real estate: Commercial real estate (1) $ 1,273,101 $ 11,059 $ 771 $ 1,284,931 Construction/land/land development 560,042 3,405 373 563,820 Residential real estate 699,859 2,660 744 703,263 Commercial and industrial 1,440,724 8,498 6,275 1,455,497 Mortgage warehouse lines of credit 437,257 — — 437,257 Consumer 18,801 27 — 18,828 Total $ 4,429,784 $ 25,649 $ 8,163 $ 4,463,596 ____________________________ (1) Excludes $17.6 million of commercial real estate loans at fair value, which are not included in the loss estimation methodology due to the fair value option election. The following table shows the allowance for credit losses by loss estimation methodology at March 31, 2020. March 31, 2020 Collectively Evaluated Individually Evaluated (Dollars in thousands) Probability of Default Fair Value of Collateral Discounted Cash Flow Total Loans secured by real estate: Commercial real estate $ 6,290 $ 2,964 $ — $ 9,254 Construction/land/land development 5,053 — 1 5,054 Residential real estate 4,495 — — 4,495 Commercial and industrial 32,644 3,152 27 35,823 Mortgage warehouse lines of credit 779 — — 779 Consumer 649 9 — 658 Total $ 49,910 $ 6,125 $ 28 $ 56,063 The following tables present the balance of loans receivable by method of impairment evaluation at December 31, 2019 : (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. The following table present impaired loans at December 31, 2019 . No mortgage warehouse lines of credit were impaired at December 31, 2019 . (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 Note that the Company is not using the collateral maintenance agreement practical expedient. All fair value of collateral is real estate related. Collateral-dependent loans consist primarily of commercial real estate and commercial and industrial loans. These loans are individually evaluated when foreclosure is probable or when the repayment of the loan is expected to be provided substantially through the operation or sale of the underlying collateral. The collateral drivers for the allowance and provision related to commercial real estate loans were primarily assisted living facilities and storage facilities. The commercial and industrial loans with allowances are collateralized by notes and other interests in the company that owns and operates the previously mentioned assisted living facilities. Factors related to the deterioration of collateral values were exacerbated by the economic conditions related to the current coronavirus pandemic. Nonaccrual LHFI were as follows: March 31, 2020 December 31, 2019 (Dollars in thousands) Nonaccrual With No Allowance for Credit Loss Nonaccrual Nonaccrual Loans secured by real estate: Commercial real estate $ 2,164 $ 11,306 $ 6,994 Construction/land/land development 3,661 3,850 4,337 Residential real estate 3,148 4,076 5,132 Total real estate 8,973 19,232 16,463 Commercial and industrial 746 13,619 14,520 Consumer 18 181 163 Total $ 9,737 $ 33,032 $ 31,146 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. At March 31, 2020 , the Company had no funding commitments in connection with debtors whose terms have been modified in troubled debt restructurings. For the three months ended March 31, 2020 and 2019 , gross interest income that would have been recorded if the nonaccruing loans had been current in accordance with their original terms was $354,000 and $355,000 , respectively. No interest income was recorded on these loans while they were considered nonaccrual during the three months ended March 31, 2020 or 2019 . The Company elects the fair value option for recording certain residential mortgage loans held for sale, as well as certain commercial real estate loans in accordance with U.S. GAAP. The Company had $840,000 of nonaccrual mortgage loans held for sale that were recorded using the fair value option election at March 31, 2020 , compared to $927,000 at December 31, 2019 . There were no nonaccrual LHFI that were recorded using the fair value option election at March 31, 2020 , or December 31, 2019 . The following is a summary of loans classified as TDRs. (Dollars in thousands) March 31, 2020 December 31, 2019 TDRs Nonaccrual TDRs $ 6,034 $ 6,609 Performing TDRs 1,885 1,843 Total $ 7,919 $ 8,452 Three Months Ended March 31, 2020 (Dollars in thousands) Number of Loans Restructured Pre-Modification Recorded Balance Term Concessions Interest Rate Concessions Combination of Term and Rate Concessions Total Modifications Commercial and industrial 2 $ 128 $ 127 $ — $ 127 Total 2 $ 128 $ 127 $ — $ — $ 127 Three Months Ended March 31, 2019 (Dollars in thousands) Number of Loans Restructured Pre-Modification Recorded Balance Term Concessions Interest Rate Concessions Combination of Term and Rate Concessions Total Modifications Loans secured by real estate: Construction/land/land development 1 $ 361 $ — $ — $ 360 $ 360 Commercial and industrial 1 19 18 — 18 Total 2 $ 380 $ 18 $ — $ 360 $ 378 During the three months ended March 31, 2020 , two loans with an outstanding principal balance of $2.3 million defaulted after having been modified as a TDR within the previous 12 months. During the three months ended March 31, 2019 , there were no loans that 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 three months ended March 31, 2020 , did not significantly impact the Company's determination of the allowance for loan credit 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 credit losses continues to be reassessed on the basis of an individual evaluation of each loan.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2020
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 in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants ("exit price") on the measurement date. Certain assets and liabilities are recorded in the Company's condensed 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; and • 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 March 31, 2020 , and December 31, 2019 , segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Total State and municipal securities $ — $ 131,537 $ 36,425 $ 167,962 Corporate bonds — 19,459 — 19,459 U.S. government and agency securities — 4,765 — 4,765 Commercial mortgage-backed securities — 12,159 — 12,159 Residential mortgage-backed securities — 229,719 — 229,719 Commercial collateralized mortgage obligations — 12,479 — 12,479 Residential collateralized mortgage obligations — 155,094 — 155,094 Securities available for sale — 565,212 36,425 601,637 Securities carried at fair value through income — — 12,242 12,242 Loans held for sale — 46,348 — 46,348 Loans at fair value — — 17,589 17,589 Mortgage servicing rights — — 16,122 16,122 Other assets - derivatives — 28,052 — 28,052 Total recurring fair value measurements - assets $ — $ 639,612 $ 82,378 $ 721,990 Other liabilities - derivatives $ — $ (28,377 ) $ — $ (28,377 ) Total recurring fair value measurements - liabilities $ — $ (28,377 ) $ — $ (28,377 ) 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 and 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 ) The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the three months ended March 31, 2020 and 2019 , 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, 2020 $ 17,670 $ 20,697 $ 38,173 $ 11,513 Gain (loss) recognized in earnings: Mortgage banking revenue (1) — (5,228 ) — — Other noninterest income 166 — — 729 Gain recognized in accumulated other comprehensive income — — 160 — Purchases, issuances, sales and settlements: Originations — 653 — — Purchases — — — — Sales — (1,908 ) — Settlements (247 ) — — — Balance at March 31, 2020 $ 17,589 $ 16,122 $ 36,425 $ 12,242 Balance at January 1, 2019 $ 18,571 $ 25,114 $ 39,361 $ 11,361 Gain (loss) recognized in earnings: Mortgage banking revenue (1) — (1,990 ) — — Other noninterest income 72 — — 149 Gain recognized in accumulated other comprehensive income — — 694 — Purchases, issuances, sales, and settlements: Originations — 283 — — Purchases — — — — Settlements (256 ) — (1,748 ) — Balance at March 31, 2019 $ 18,387 $ 23,407 $ 38,307 $ 11,510 ____________________________ (1) Total mortgage banking revenue includes changes in fair value due to market changes and run-off. The Company obtains fair value measurements for loans at fair value, securities available for sale and securities at fair value through income from an independent pricing service, therefore, quantitative unobservable inputs are unknown. 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 includes, but is not limited to 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. 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 other pricing sources. The third-party pricing service is subject to an annual review of internal controls in accordance with the Statement on Standards for Attestation Engagement 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 ("MSRs") The carrying amounts of the MSRs equal fair value and are valued on a discounted cash flow valuation technique. The significant assumptions used to value MSRs were as follows: March 31, 2020 December 31, 2019 Range Weighted Average (1) Weighted Average (1) Prepayment speeds 10.01% - 27.33% 16.06 % 12.46 % Discount rates 8.73% - 9.98% 9.20 9.55 __________________________ (1) The weighted average was calculated with reference to the principle balance of the underlying mortgages. 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 are 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 March 31, 2020 , and December 31, 2019 , 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. March 31, 2020 (Dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale (1) $ 46,348 $ 44,362 $ 1,986 Commercial real estate LHFI (2) 17,589 17,120 469 Securities carried at fair value through income 12,242 11,070 1,172 Total $ 76,179 $ 72,552 $ 3,627 ____________________________ (1) $840,000 of loans held for sale were designated as nonaccrual or 90 days or more past due at March 31, 2020 . Of this balance, $576,000 was guaranteed by U.S. government agencies. (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 March 31, 2020 . 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 LHFI (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, $709,000 was guaranteed by U.S. Government agencies. (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 . Changes in the fair value of assets for which the Company elected the fair value option are classified in the condensed consolidated statement of income line items reflected in the following table. (Dollars in thousands) Three Months Ended March 31, Changes in fair value included in noninterest income: 2020 2019 Mortgage banking revenue: Mortgage loans held for sale $ 1,046 $ 37 Other income: Loans at fair value held for investment 166 72 Securities carried at fair value through income 729 149 Total impact on other income (1) 895 221 Total fair value option impact on noninterest income $ 1,941 $ 258 ____________________________ (1) The fair value option impact on other income is offset by the derivative gain/loss recognized in other income. Please see Note 7 - 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 creditworthiness of each issuer. Credit spreads ranged from 83 to 227 basis points at both March 31, 2020 , and December 31, 2019 . 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. LHFI For LHFI 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 both March 31, 2020 , and December 31, 2019 . 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 $52.3 million at March 31, 2020 , and are shown on the face of the condensed consolidated balance sheet. 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 $29.0 million and $27.9 million , respectively, at March 31, 2020 , and December 31, 2019 , for Government National Mortgage Association ("GNMA") repurchase assets included in mortgage loans held for sale on the condensed consolidated balance sheet. 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 7 - Mortgage Banking for more information on the GNMA repurchase asset. Collateral Dependent Loans with Credit Losses Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms are measured to determine if any credit loss exists. Allowable methods for determining the amount of credit loss includes estimating the fair value using the fair value of the collateral for collateral-dependent loans. If the loan is identified as collateral-dependent, the fair value method of measuring the amount of credit loss is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Loans that have experienced a credit loss that are collateral-dependent are classified within Level 3 of the fair value hierarchy when the credit loss is determined using the fair value method. The fair value of loans that have experienced a credit loss with specific allocated losses was approximately $16.2 million and $1.9 million at March 31, 2020 , and December 31, 2019 , 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 credit 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 $5.2 million at March 31, 2020 , and $4.7 million at December 31, 2019 . At March 31, 2020 , the Company had $296,000 in residential mortgage loans in the process of foreclosure. Fair Values of Financial Instruments Not Recorded at Fair Value Loans The estimated fair value approximates carrying value for variable-rate loans that reprice frequently and with no significant change in credit risk. The fair value of fixed-rate loans and variable-rate loans which reprice on an infrequent basis is estimated by discounting future cash flows using exit level pricing, which combines the current interest rates at which similar loans with similar terms would be made to borrowers of similar credit quality and an estimated additional rate to reflect a liquidity premium. An overall valuation adjustment is made for specific credit risks as well as general portfolio credit risk. Deposits The estimated fair value approximates carrying value for demand deposits. The fair value of fixed-rate deposit liabilities with defined maturities is estimated by discounting future cash flows using the interest rates currently available for funding from the FHLB. The estimated fair value of deposits does not take into account the value of our long-term relationships with depositors, commonly known as core deposit intangibles, which are separate intangible assets, and not considered financial instruments. Nonetheless, we would likely realize a core deposit premium if our deposit portfolio were sold in the principal market for such deposits. Borrowed Funds The estimated fair value approximates carrying value for short-term borrowings. The fair value of long-term fixed-rate borrowings is estimated using quoted market prices, if available, or by discounting future cash flows using current interest rates for similar financial instruments. The estimated fair value approximates carrying value for variable-rate junior subordinated debentures that reprice quarterly. The carrying value and estimated fair values of financial instruments not recorded at fair value are as follows: (Dollars in thousands) March 31, 2020 December 31, 2019 Financial assets: Carrying Estimated Carrying Value Estimated Fair Value Level 1 inputs: Cash and cash equivalents $ 560,179 $ 560,179 $ 291,518 $ 291,518 Level 2 inputs: Non-marketable equity securities held in other financial institutions 52,267 52,267 39,808 39,808 Accrued interest and loan fees receivable 16,881 16,881 16,430 16,430 Level 3 inputs: Securities held to maturity 28,383 29,400 28,620 29,523 LHFI, net (1) 4,407,533 4,418,284 4,088,005 3,940,347 Financial liabilities: Level 2 inputs: Deposits 4,556,246 4,564,487 4,228,612 4,081,430 FHLB advances and other borrowings 716,909 701,555 417,190 425,318 Subordinated debentures 78,539 76,521 9,671 10,717 Accrued interest payable 3,062 3,062 2,822 2,822 ____________________________ (1) LHFI, net does not include loans for which the fair value option had been elected at March 31, 2020 , or December 31, 2019 , as these loans are carried at fair value on a recurring basis.

Goodwill and Other Intangible A

Goodwill and Other Intangible Assets	3 Months Ended
	Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Note 6 - Goodwill and Other Intangible Assets During March 2020, the Company experienced a triggering event related to the price of the Company's common stock. As a result, the Company evaluated its goodwill and other intangible assets for impairment. The Company's evaluation indicated no impairment was necessary on either its goodwill or other intangible assets.

Mortgage Banking

Mortgage Banking	3 Months Ended
	Mar. 31, 2020
Mortgage Banking [Abstract]
Mortgage Banking	Note 7 - Mortgage Banking The following table presents the Company's revenue from mortgage banking operations: (Dollars in thousands) Three Months Ended March 31, Mortgage banking revenue 2020 2019 Origination $ 275 $ 130 Gain on sale of loans held for sale 1,873 1,097 Servicing 1,601 1,699 Total gross mortgage revenue 3,749 2,926 Mortgage HFS and pipeline fair value adjustment 1,266 210 MSR valuation adjustment, net of amortization (5,228 ) (1,990 ) MSR hedge impact 2,982 1,460 Mortgage banking revenue $ 2,769 $ 2,606 Management uses forward contracts on mortgage-backed securities to mitigate the impact of changes in fair value of MSRs. See Note 9 - Derivative Financial Instruments for further information. Mortgage Servicing Rights Activity in MSRs was as follows: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Balance at beginning of period $ 20,697 $ 25,114 Addition of servicing rights 653 283 Valuation adjustment, net of amortization (5,228 ) (1,990 ) Balance at end of period $ 16,122 $ 23,407 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 violated representations or warranties made by the Company and/or the borrower 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 $2,000 in mortgage loan servicing putback expense for the three months ended March 31, 2020 , and no putback expense for the quarter ended March 31, 2019. The reserve for mortgage loan servicing putback expenses totaled $231,000 and $229,000 at March 31, 2020 , and December 31, 2019 , 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, 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 totaled $29.0 million and $27.9 million at March 31, 2020 , and December 31, 2019 , respectively, and were recorded as mortgage loans held for sale, at the lower of cost or fair value with a corresponding liability in FHLB advances and other borrowings on the Company's condensed consolidated balance sheets.

Borrowings

Borrowings	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Borrowings	Note 8 - Borrowings Borrowed funds are summarized as follows: March 31, December 31, (Dollars in thousands) 2020 2019 Overnight repurchase agreements with depositors $ 15,533 $ 16,717 Short-term FHLB advances 400,000 100,000 GNMA repurchase liability 28,975 27,860 Long-term FHLB advances 272,401 272,613 Total FHLB advances and other borrowings $ 716,909 $ 417,190 Subordinated debentures, net $ 78,539 $ 9,671 Additional details of certain FHLB advances are as follows: (Dollars in thousands) Amount Interest Rate Maturity Date At March 31, 2020: Short-term FHLB advance, fixed rate $ 50,000 0.45 % 6/23/2020 Short-term FHLB advance, fixed rate 300,000 0.30 6/25/2020 Short-term FHLB advance, fixed rate 30,000 0.58 9/21/2020 Short-term FHLB advance, fixed rate 20,000 0.65 12/21/2020 Long-term FHLB advance, callable quarterly, fixed rate 250,000 1.65 8/23/2033 At December 31, 2019: Short-term FHLB advance, fixed rate 100,000 1.35 1/2/2020 Long-term FHLB advance callable quarterly, fixed rate 250,000 1.65 8/23/2033 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 March 31, 2020 , and December 31, 2019 , were $140.2 million and $601.9 million , respectively. Subordinated Debentures Origin Bank completed 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, in February 2020. 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 qualify as Tier 2 capital for regulatory capital purposes for Origin Bank and the Company. 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 "junior debentures") of the Company. The junior debentures are the sole assets of the trusts. The Company's obligations under the junior 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 junior debentures, or upon earlier redemption as provided in the respective indentures. The Company has the right to redeem the junior debentures, in whole or in part on or after specific dates, at a redemption price specified in the indentures governing the junior 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 junior subordinated debentures at March 31, 2020 : (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) 5.08 % 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 January 29, 2020. (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 junior subordinated debentures outstanding varies from the amounts carried on the consolidated balance sheets due to the remaining purchase discount of $1.1 million and $1.2 million , at March 31, 2020 , and December 31, 2019 , respectively, 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 Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 9 - 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 condensed consolidated statement of income on a recurring basis. Cash Flow Hedges of Interest Rate Risk The Company is a party to interest rate swap agreements under which the Company receives interest at a variable rate and pays at a fixed rate. The derivative instruments represented by the swap agreements are designated as cash flow hedges of the Company's forecasted variable cash flows under its junior subordinated debentures. During the term of the swap agreements, the effective portion of changes in the fair value of the derivative instruments 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 changes in fair value of the derivatives recognized directly in earnings. The entire swap fair values will be reclassified into earnings before the respective expiration dates of the swap agreements. 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 contracts 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 condensed consolidated balance sheets at March 31, 2020 , and December 31, 2019 , as well as the effect of these derivative instruments on the Company's condensed consolidated statements of income for the three months ended March 31, 2020 and 2019 : (Dollars in thousands) Notional Amounts (1) Fair Values Derivatives designated as cash flow hedging instruments: March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 Interest rate swaps included in other assets (liabilities) $ 21,000 $ 10,500 $ (803 ) $ (101 ) Derivatives not designated as hedging instruments: Interest rate swaps included in other assets $ 266,081 $ 217,633 $ 23,463 $ 8,425 Interest rate swaps included in other liabilities 294,600 246,397 (25,001 ) (9,278 ) Forward commitments to purchase mortgage-backed securities included in other assets 155,000 200,000 1,188 242 Forward commitments to sell residential mortgage loans included in other liabilities 126,700 60,600 (2,573 ) (109 ) Interest rate-lock commitments on residential mortgage loans included in other assets 145,088 37,382 3,401 717 $ 987,469 $ 762,012 $ 478 $ (3 ) ____________________________ (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 condensed consolidated balance sheets. The weighted-average interest rates paid and received for interest rate swaps at March 31, 2020 , were as follows: Weighted-Average Interest rate swaps: Interest Rate Paid Interest Rate Received Cash flow hedges 4.81 % 4.11 % Non-hedging interest rate swaps - financial institution counterparties 4.93 3.45 Non-hedging interest rate swaps - customer counterparties 3.52 4.93 Gains and losses recognized on derivative instruments not designated as hedging instruments were as follows: (Dollars in thousands) Three Months Ended March 31, Derivatives not designated as hedging instruments: 2020 2019 Amount of gain (loss) recognized in mortgage banking revenue (1) $ 2,513 $ 1,311 Amount of (loss) gain recognized in other non-interest income (685 ) (225 ) ____________________________ (1) Gains and losses on these instruments are largely offset by market fluctuations in MSRs. See Note 7 - 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 condensed consolidated balance sheets, and any impact of netting these amounts would not be significant. At March 31, 2020 , and December 31, 2019 , the Company had cash collateral on deposit with swap counterparties totaling $27.7 million and $15.3 million , respectively. These amounts are included in interest-bearing deposits in banks in the condensed consolidated balance sheets and are considered restricted cash until such time as the underlying swaps are settled.

Stock and Incentive Compensatio

Stock and Incentive Compensation Plans	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Stock and Incentive Compensation Plans	Note 10 - 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 (the "2012 Plan"). Additionally, awards have been issued prior to the establishment of the 2012 Plan, some of which are still outstanding at March 31, 2020 . 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 March 31, 2020 , the maximum number of shares of the Company's common stock available for issuance under the 2012 Plan was 951,612 shares. Share-based compensation cost charged to income for the three months ended March 31, 2020 and 2019 , is presented below: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Restricted stock $ 537 $ 470 Related tax benefits recognized in net income 113 99 Restricted Stock Grants The Company's restricted stock grants are time-vested awards and are granted to the Company's 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 expensed on a straight-line basis over the requisite service period, with forfeitures recognized as they occur. The following table summarizes the Company's time-vested award activity: Three Months Ended March 31, 2020 2019 Shares Weighted Average Grant-Date Fair Value Shares Weighted Average Grant-Date Fair Value Nonvested shares, January 1, 149,449 $ 35.15 174,407 $ 35.01 Granted — — 976 35.91 Vested (2,073 ) 25.81 (3,568 ) 25.25 Forfeited (4,129 ) 37.14 (1,550 ) 23.64 Nonvested shares, March 31, 143,247 35.23 170,265 35.32 At March 31, 2020 , there was $3.5 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 2.43 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 . Vesting periods range from immediate to ten years from the date of grant or merger. 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 rates, 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 three months ended March 31, 2020 and 2019 . (Dollars in thousands, except per share amounts) Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value Three Months Ended March 31, 2019 Outstanding at January 1, 2019 274,000 $ 10.38 6.75 $ 6,493 Exercised (20,000 ) 8.25 — — Outstanding and exercisable at March 31, 2019 254,000 10.55 6.56 5,969 Three Months Ended March 31, 2020 Outstanding at January 1, 2020 254,000 $ 10.55 5.81 $ 6,932 Exercised (30,000 ) 8.25 — — Outstanding and exercisable at March 31, 2020 224,000 10.86 5.67 2,104

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Note 11 - Income Taxes The provision for income taxes was as follows: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Federal income taxes: Current $ 3,376 $ 3,167 Deferred (3,995 ) (336 ) State income taxes: Current 319 268 Deferred (127 ) (10 ) Income tax (benefit) expense $ (427 ) $ 3,089 Effective income tax rate (130.98 )% 17.91 % The effective income tax rates differed from the U.S. statutory federal income tax rates of 21% during 2020 and 2019, primarily due to the effect of tax-exempt income from securities, low income housing and qualified school construction bond tax credits, tax-exempt income from life insurance policies and income tax effects associated with stock-based compensation. Because of these items, the Company expects its effective income tax rate to continue to remain below the U.S. statutory rate. These tax-exempt items can have a larger than proportional effect on the Company's effective income tax rate as net income decreases. The Company's quarterly provision for income taxes has historically been calculated using the annual effective tax rate method (“AETR method”), which applies an estimated annual effective tax rate to pre-tax income or loss. However, the Company recorded its interim income tax provision using the actual effective tax rate as of March 31, 2020, as allowed under ASC 740-270, Accounting for Income Taxes - Interim Reporting. The Company utilized the actual effective rate to record tax expense, rather than the AETR method, as a reliable estimate of ordinary income and significant permanent items are not able to be made at this time, which results in significant variations in income tax expense, primarily driven by the COVID-19 crisis. This would have resulted in a disproportionate and unreliable effective tax rate under the AETR method. The Company determined current and deferred income tax expense as if the interim period were an annual period. A reconciliation of income tax expense at the statutory rate to the Company's actual income tax expense is below: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Income taxes computed at statutory rate 21.00 % 21.00 % Tax exempt revenue, net of nondeductible interest (45.46 ) (0.98 ) Low-income housing tax credits, net of amortization (38.15 ) (0.75 ) Other tax credits, net of add-backs (93.08 ) (1.74 ) Bank-owned life insurance income (35.69 ) (0.22 ) State income taxes, net of federal benefit 41.57 1.16 Stock-based compensation (7.79 ) (0.62 ) Nondeductible expenses and other 26.62 0.06 Total income tax expense (130.98 )% 17.91 % 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

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income	Note 12 - Accumulated Other Comprehensive Income Accumulated other comprehensive income includes the after-tax change in unrealized gains and losses on available for sale ("AFS") securities and cash flow hedging activities. (Dollars in thousands) Unrealized (Losses) Gains on AFS Securities Unrealized Gains (Losses) on Cash Flow Hedges Accumulated Other Comprehensive Income Balance at January 1, 2019 $ (2,601 ) $ 121 $ (2,480 ) Net change 4,078 (74 ) 4,004 Balance at March 31, 2019 $ 1,477 $ 47 $ 1,524 Balance at January 1, 2020 $ 6,412 $ (79 ) $ 6,333 Net change 10,044 (555 ) 9,489 Balance at March 31, 2020 $ 16,456 $ (634 ) $ 15,822

Capital and Regulatory Matters

Capital and Regulatory Matters	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Capital and Regulatory Matters	Note 13 - 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 March 31, 2020 , and December 31, 2019 , that the Company and the Bank met all capital adequacy requirements to which they are subject, including the capital buffer requirement. At March 31, 2020 , and December 31, 2019 , 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 below. A final rule adopted by the federal banking agencies in February 2019 provides banking organizations with the option to phase in, over a three-year period, the adverse day-one regulatory capital effects of the adoption of CECL. In addition, on March 27, 2020, the federal banking agencies issued an interim final rule that gives banking organizations that implement CECL before the end of 2020 the option to delay for two years CECL’s adverse effects on regulatory capital. Origin has elected to adopt CECL as planned in the first quarter of 2020 and to exercise the option to delay the estimated impact of the adoption of CECL on our regulatory capital for two years, which resulted in a ten basis point benefit to the common equity tier 1 capital to risk-weighted assets capital ratio at March 31, 2020. This two-year delay is in addition to the three-year transition period the banking agencies have already made available. The actual capital amounts and ratios of the Company and Bank at March 31, 2020 , and December 31, 2019 , are presented in the following table: (Dollars in thousands) Actual Minimum Capital Required - Basel III To be Well Capitalized Under Prompt Corrective Action Provisions March 31, 2020 Amount Ratio Amount Ratio Amount Ratio Common Equity Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. $ 565,017 10.86 % $ 364,191 7.00 % N/A N/A Origin Bank 554,119 10.68 363,187 7.00 $ 337,245 6.50 % Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. 574,370 11.04 442,223 8.50 N/A N/A Origin Bank 554,119 10.68 441,012 8.50 415,070 8.00 Total Capital to Risk-Weighted Assets Origin Bancorp, Inc. 695,633 13.38 545,900 10.50 N/A N/A Origin Bank 675,382 13.02 544,663 10.50 518,727 10.00 Leverage Ratio Origin Bancorp, Inc. 574,370 10.71 214,517 4.00 N/A N/A Origin Bank 554,119 10.36 213,946 4.00 267,432 5.00 December 31, 2019 Common Equity Tier 1 Capital to Risk-Weighted Assets 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 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. Under the foregoing dividend restrictions and while maintaining its "well capitalized" status, management believes that at March 31, 2020 , the Bank could pay aggregate dividends of up to $37.7 million to the Company without prior regulatory approval.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 14 - 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 condensed 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: (Dollars in thousands) March 31, 2020 December 31, 2019 Commitments to extend credit $ 1,355,644 $ 1,374,055 Standby letters of credit 49,118 39,344 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 March 31, 2020 , and December 31, 2019 , these credit card guarantees totaled $399,000 and $489,000 , 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. As of March 31, 2020 , the Company held 28 unfunded letters of credit from the FHLB totaling $424.9 million with expiration dates ranging from April 13, 2020, to October 26, 2021. 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. Management establishes an asset-specific allowance for certain lending-related commitments 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 $1.6 million and $1.8 million at March 31, 2020 , and December 31, 2019 , respectively, and is included in other liabilities in the accompanying condensed 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.

Significant Accounting Polici_2

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation . The condensed consolidated financial statements in this quarterly report on Form 10-Q 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, doing business as Thomas & Farr Agency and Reeves, Coon and Funderburg. All significant intercompany balances and transactions have been eliminated in consolidation. The condensed consolidated financial statements in this quarterly report on Form 10-Q have not been audited by an independent registered public accounting firm, excluding the figures as of December 31, 2019, but in the opinion of management, reflect all adjustments necessary for a fair presentation of the Company's financial position and results of operations for the periods presented. These condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("U.S. GAAP") and with the rules and regulations of the Securities and Exchange Commission (the "SEC") for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by U.S. GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2019, included in the Company's annual report on Form 10-K ("2019 Form 10-K") filed with the SEC. Operating results for the interim periods disclosed herein are not necessarily indicative of results that may be expected for a full year. Certain prior year amounts have been reclassified to conform to the current year financial statement presentations. These reclassifications did not impact previously reported net income or comprehensive income. The Company's significant accounting policies, including those for loans and allowance for loan and lease losses, are described in Note 1 of the Notes to Consolidated Financial Statements for the year ended December 31, 2019, included in the Company's 2019 Form 10-K ("Note 1"). Due to the adoption of ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments ("CECL") the significant accounting policies for loans and the allowance for credit losses have changed since December 31, 2019, as described below. Except for the changes related to CECL, there have been no changes to the Company's significant accounting policies since December 31, 2019. While federal legislators have allowed for the option to defer implementation of the CECL methodology, effective January 1, 2020, the Company adopted CECL resulting in a change to the Company's reporting of credit losses for assets held at amortized cost basis and available for sale debt securities. See the discussion below titled "Effect of Recently Adopted Accounting Standards" for a description of policy revisions resulting from the Company's adoption of ASU 2016-13. For interim reporting purposes, the Company follows the same accounting policies and considers each interim period as an integral part of an annual period.
Use of Estimates	Use of Estimates . The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions based on available information that affect the amounts reported in the financial statements and disclosures provided, including the accompanying notes, and actual results could differ. Material estimates that are particularly susceptible to change include the allowance for credit losses for loans and available for sale securities; fair value measurements of assets and liabilities; and income taxes. Estimates and assumptions are reviewed periodically and the effects of revisions are reflected in the Company's consolidated financial statements in the period they are deemed necessary. While management uses its best judgment, actual results could differ from those estimates.
Earnings Per Share	Earnings Per Share . Basic and diluted earnings per common share 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.
Effect of Recently Adopted Accounting Standards and Effect of Newly Issued But Not Yet Effective Accounting Standards	Effect of Recently Adopted Accounting Standards ASC Topic 326, Financial Instruments - Credit Losses introduces 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 that are not unconditionally cancellable by the Company. Expected credit losses related to off-balance sheet exposures are presented as a liability. The allowance for loan credit losses represents the estimated losses for financial assets accounted for on an amortized cost basis. Expected losses are calculated using relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The Company evaluates loans held for investment ("LHFI") on a pool basis with pools of loans characterized by loan type, collateral, industry, internal credit risk rating and FICO score. The Company applied a probability of default, loss given default loss methodology to the loan pools at January 1 and March 31, 2020. Historical loss rates for each pool are calculated based on charge-off and recovery data beginning with the second quarter of 2012. These loss rates are adjusted for differences between current period conditions and the conditions existing during the historical loss period. Historical losses are additionally adjusted for the effects of certain economic variables forecast over a one-year period. Subsequent to the forecast effects, historical loss rates are used to estimate losses over the estimated remaining lives of the loans. The estimated remaining lives consist of the contractual lives, adjusted for estimated prepayments. Loans that exhibit characteristics different from their pool characteristics are evaluated on an individual basis. Certain of these loans are considered to be collateral dependent with the borrower experiencing financial difficulty. For these loans, the fair value of collateral practical expedient is elected whereby the allowance is calculated as the amount by which the amortized cost exceeds the fair value of collateral, less costs to sell (if applicable). Those individual loans that are not collateral dependent are evaluated based on a discounted cash flow methodology. 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 more likely to default and impact management's estimates of loss factors used in determining the amount of the allowance for loan credit losses. Internal risk ratings are updated on a regular basis. Troubled debt restructurings ("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. The allowance for off-balance sheet exposures was determined using the same methodology that is applied to LHFI. Utilization rates are determined based on historical usage. The allowance for credit losses for held-to-maturity securities is calculated using a probability of default, loss given default methodology. Credit losses are estimated over the lives of the securities using historical loss rates, adjusted for current conditions and reasonable and supportable forecasts. Third party data are used for the historical loss rates and probability of default statistics. A weighted average of three possible economic scenarios is used to calculate the forecast effect. The forecast effect is applied over the estimated lives of the securities. Credit losses related to available for sale debt securities are recorded through an allowance for credit losses. The amount of the allowance for credit losses is limited to the amount by which fair value is below amortized cost. Discounted cash flow analysis is required for determining credit losses for available for sale securities. In determining whether or not a credit loss exists, such factors as extent of the loss, adverse conditions related to the entity, industry or geographic region, security structure, ratings and changes by a rating agency and past performance are considered. The length of time a security has been in an unrealized loss position is not a factor in determining whether a credit loss exists. The accounting for credit losses for available for sale securities is prospective, and therefore requires no transition effect. The Company made the following policy elections related to the adoption of the guidance in Topic 326: • Accrued interest will be written off against interest income when financial assets are placed into nonaccrual status. Therefore, accrued interest will be excluded from the amortized cost basis for purposes of calculating the allowance for credit losses. Accrued interest receivable is presented with other assets in a separate line item in the consolidated balance sheet. • The fair value of collateral practical expedient has been elected on certain loans, in determining the allowance for credit losses, for which the repayment is expected to be provided substantially through the operation or sale of the collateral when the borrower is experiencing financial difficulty. • For credit loss estimates calculated using a discounted cash flow approach, the entire change in present value is reported in credit loss expense rather than being attributed to interest income. The adoption of ASC Topic 326 has been recorded as a cumulative effect adjustment to retained earnings. The adjustment that was recorded as of January 1, 2020 is shown below. (Dollars in thousands) December 31, 2019 ALLL Balance Transition Adjustment January 1, 2020 ACL Balance LHFI: Loans secured by real estate: Commercial real estate $ 10,013 $ (5,052 ) $ 4,961 Construction/land/land development 3,711 1,141 4,852 Residential real estate 6,332 (2,526 ) 3,806 Total real estate 20,056 (6,437 ) 13,619 Commercial and industrial 16,960 7,296 24,256 Mortgage warehouse lines of credit 262 29 291 Consumer 242 360 602 Total allowance for credit losses on loans $ 37,520 $ 1,248 $ 38,768 (Dollars in thousands) December 31, 2019 Liability Balance Transition Adjustment January 1, 2020 ACL Balance Reserve for off-balance sheet exposures $ 1,810 $ (381 ) $ 1,429 Held-to-Maturity Securities: Municipal securities $ 96 $ 96 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 were effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company implemented these amendments as of January 1, 2020. Effect of Newly Issued But Not Yet Effective Accounting Standards There are no newly issued but not yet effective accounting standards, except for minor clarifications, that impact the Company as of March 31, 2020.
Loans, Nonaccrual Status	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.
Loans, Held-for-Sale	The Company elects the fair value option for recording certain residential mortgage loans held for sale, as well as certain commercial real estate loans in accordance with U.S. GAAP.
Fair Value of Financial Instruments	Derivatives Fair values for interest rate swap agreements are based upon the amounts that are 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. 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 creditworthiness of each issuer. Credit spreads ranged from 83 to 227 basis points at both March 31, 2020 , and December 31, 2019 . 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. LHFI For LHFI 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 both March 31, 2020 , and December 31, 2019 . 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 $52.3 million at March 31, 2020 , and are shown on the face of the condensed consolidated balance sheet. 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 $29.0 million and $27.9 million , respectively, at March 31, 2020 , and December 31, 2019 , for Government National Mortgage Association ("GNMA") repurchase assets included in mortgage loans held for sale on the condensed consolidated balance sheet. 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 7 - Mortgage Banking for more information on the GNMA repurchase asset. Collateral Dependent Loans with Credit Losses Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms are measured to determine if any credit loss exists. Allowable methods for determining the amount of credit loss includes estimating the fair value using the fair value of the collateral for collateral-dependent loans. If the loan is identified as collateral-dependent, the fair value method of measuring the amount of credit loss is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Loans that have experienced a credit loss that are collateral-dependent are classified within Level 3 of the fair value hierarchy when the credit loss is determined using the fair value method. The fair value of loans that have experienced a credit loss with specific allocated losses was approximately $16.2 million and $1.9 million at March 31, 2020 , and December 31, 2019 , respectively. Non-Financial Assets Fair value is the exchange price that is expected to be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants ("exit price") on the measurement date. Certain assets and liabilities are recorded in the Company's condensed 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; and • 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. 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 includes, but is not limited to 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. 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 other pricing sources. The third-party pricing service is subject to an annual review of internal controls in accordance with the Statement on Standards for Attestation Engagement 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 ("MSRs")
Derivative Financial Instruments	Note 9 - 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 condensed consolidated statement of income on a recurring basis. Cash Flow Hedges of Interest Rate Risk The Company is a party to interest rate swap agreements under which the Company receives interest at a variable rate and pays at a fixed rate. The derivative instruments represented by the swap agreements are designated as cash flow hedges of the Company's forecasted variable cash flows under its junior subordinated debentures. During the term of the swap agreements, the effective portion of changes in the fair value of the derivative instruments 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 changes in fair value of the derivatives recognized directly in earnings. The entire swap fair values will be reclassified into earnings before the respective expiration dates of the swap agreements. 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 contracts 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. 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 condensed consolidated balance sheets, and any impact of netting these amounts would not be significant.

Significant Accounting Polici_3

Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Adjustment Recorded as a Result of the Adoption of ASC Topic 326	The adoption of ASC Topic 326 has been recorded as a cumulative effect adjustment to retained earnings. The adjustment that was recorded as of January 1, 2020 is shown below. (Dollars in thousands) December 31, 2019 ALLL Balance Transition Adjustment January 1, 2020 ACL Balance LHFI: Loans secured by real estate: Commercial real estate $ 10,013 $ (5,052 ) $ 4,961 Construction/land/land development 3,711 1,141 4,852 Residential real estate 6,332 (2,526 ) 3,806 Total real estate 20,056 (6,437 ) 13,619 Commercial and industrial 16,960 7,296 24,256 Mortgage warehouse lines of credit 262 29 291 Consumer 242 360 602 Total allowance for credit losses on loans $ 37,520 $ 1,248 $ 38,768 (Dollars in thousands) December 31, 2019 Liability Balance Transition Adjustment January 1, 2020 ACL Balance Reserve for off-balance sheet exposures $ 1,810 $ (381 ) $ 1,429 Held-to-Maturity Securities: Municipal securities $ 96 $ 96

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	(Dollars in thousands, except per share amounts) Three Months Ended March 31, 2020 2019 Numerator: Net income (basic and diluted) $ 753 $ 14,155 Denominator: Weighted average common shares outstanding 23,353,601 23,569,576 Dilutive effect of stock-based awards 176,611 206,773 Weighted average diluted common shares outstanding 23,530,212 23,776,349 Basic earnings per common share $ 0.03 $ 0.60 Diluted earnings per common share $ 0.03 $ 0.60

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Summary of Amortized Cost and Estimated Fair Value of Securities	The following table is a summary of the amortized cost and estimated fair value, including the allowance for credit losses and 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) Amortized Allowance for Credit Losses Net Carrying Amount Gross Gross Fair March 31, 2020 Available for sale: State and municipal securities $ 160,828 $ — $ 160,828 $ 7,592 $ (458 ) $ 167,962 Corporate bonds 18,943 — 18,943 555 (39 ) 19,459 U.S. government and agency securities 4,522 — 4,522 250 (7 ) 4,765 Commercial mortgage-backed securities 11,781 — 11,781 378 — 12,159 Residential mortgage-backed securities 221,766 — 221,766 7,953 — 229,719 Commercial collateralized mortgage obligations 12,356 — 12,356 123 — 12,479 Residential collateralized mortgage obligations 150,714 — 150,714 4,380 — 155,094 Total $ 580,910 $ — $ 580,910 $ 21,231 $ (504 ) $ 601,637 Held to maturity: State and municipal securities $ 28,479 $ (96 ) $ 28,383 $ 921 $ — $ 29,400 Securities carried at fair value through income: State and municipal securities (1) $ 11,070 $ — $ 11,070 $ — $ — $ 12,242 (Dollars in thousands) Amortized Gross Gross Fair December 31, 2019 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 ____________________________ (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 condensed consolidated statements of income. See Note 5 - Fair Value of Financial Instruments for more information.
Schedule of Securities with Unrealized Loss	Securities with unrealized losses at March 31, 2020 , and December 31, 2019 , 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: (Dollars in thousands) Less than 12 Months 12 Months or More Total March 31, 2020 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available for sale: State and municipal securities $ 13,402 $ (458 ) $ — $ — $ 13,402 $ (458 ) Corporate bonds 2,961 (39 ) — — 2,961 (39 ) U.S. government and agency securities — — 622 (7 ) 622 (7 ) Total $ 16,363 $ (497 ) $ 622 $ (7 ) $ 16,985 $ (504 ) December 31, 2019 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 )
Schedule of Allowance for Credit Losses for Held-to-maturity Securities	The following table details activity in the allowance for credit losses for held-to-maturity debt securities. (Dollars in thousands) Municipal Securities Allowance for credit losses: Balance at January 1, 2020 $ — Impact of adopting ASC 326 96 Credit loss expense — Balance at March 31, 2020 $ 96
Schedule of Proceeds from Sales of Securities Available for Sale and Gross Gains	Proceeds from sales and calls of securities available for sale and gross gains for the period indicated are shown below. There were no sales of securities available for sale for the three months ended March 31, 2019. (Dollars in thousands) Three Months Ended March 31, 2020 Proceeds from sales/calls $ 22,375 Gross realized gains 103 Gross realized losses (49 ) Tax expense related to securities gains/losses 11
Securities Classified by Contractual Maturity	The following table presents the amortized cost and fair value of securities available for sale and held to maturity at March 31, 2020 , 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 March 31, 2020 Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ — $ — $ 3,485 $ 3,517 Due after one year through five years 13,276 13,483 44,155 46,082 Due after five years through ten years 15,203 15,917 54,978 57,246 Due after ten years — — 81,675 85,341 Commercial mortgage-backed securities — — 11,781 12,159 Residential mortgage-backed securities — — 221,766 229,719 Commercial collateralized mortgage obligations — — 12,356 12,479 Residential collateralized mortgage obligations — — 150,714 155,094 Total $ 28,479 $ 29,400 $ 580,910 $ 601,637
Securities Pledged as Collateral	The following table presents carrying amounts of securities pledged as collateral for public deposits and repurchase agreements as of the dates presented. (Dollars in thousands) March 31, 2020 December 31, 2019 Carrying value of securities pledged to secure public deposits $ 171,262 $ 285,552 Carrying value of securities pledged to repurchase agreements 19,664 20,356

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2020
Receivables [Abstract]
Schedule of Loans	Loans consisted of the following: (Dollars in thousands) March 31, 2020 December 31, 2019 Loans held for sale $ 75,322 $ 64,837 LHFI: Loans secured by real estate: Commercial real estate $ 1,284,931 $ 1,279,177 Construction/land/land development 563,820 517,688 Residential real estate 703,263 689,555 Total real estate 2,552,014 2,486,420 Commercial and industrial 1,455,497 1,343,475 Mortgage warehouse lines of credit 437,257 274,659 Consumer 18,828 20,971 Total loans accounted for at amortized cost 4,463,596 4,125,525 Loan accounted for at fair value 17,589 17,670 Total LHFI (1) 4,481,185 4,143,195 Less: allowance for credit losses 56,063 37,520 Net LHFI $ 4,425,122 $ 4,105,675 ____________________________ (1) Includes net deferred loan fees of $4.0 million and $3.6 million at March 31, 2020 , and December 31, 2019 , respectively.
Recorded Investment in Loans by Credit Quality Indicator	The following table reflects recorded investments in loans by credit quality indicator and origination year at March 31, 2020 , excluding loans held for sale and loans accounted for at fair value. The Company had an immaterial amount of revolving loans converted to terms loans at March 31, 2020 . Term Loans Amortized Cost Basis by Origination Year 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Commercial real estate: (1) Risk rating: Pass $ 101,330 $ 302,613 $ 349,746 $ 193,121 $ 82,816 $ 197,807 $ 23,046 $ 1,250,479 Special mention — — 416 — — 11,907 350 12,673 Classified — 1,019 5,196 13,277 242 1,970 75 21,779 Total commercial real estate loans $ 101,330 $ 303,632 $ 355,358 $ 206,398 $ 83,058 $ 211,684 $ 23,471 $ 1,284,931 Current-period gross writeoffs $ — $ — $ — $ 150 $ — $ 22 $ — $ 172 Current-period recoveries — — — — — 2 — 2 Current period net writeoffs $ — $ — $ — $ 150 $ — $ 20 $ — $ 170 (1) Excludes $17.6 million of commercial real estate loans at fair value, which are not included in the loss estimation methodology due to the fair value option election. Construction/land/land development: Risk rating: Pass $ 45,874 $ 203,582 $ 210,678 $ 69,863 $ 9,583 $ 2,191 $ 16,447 $ 558,218 Special mention 336 146 — — — — — 482 Classified — 1,232 384 3,220 98 186 — 5,120 Total construction/land/land development loans $ 46,210 $ 204,960 $ 211,062 $ 73,083 $ 9,681 $ 2,377 $ 16,447 $ 563,820 Current-period gross writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Current-period recoveries — — — — — — — — Current period net writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Residential real estate: Risk rating: Pass $ 40,894 $ 196,502 $ 115,661 $ 122,452 $ 59,959 $ 108,855 $ 50,656 $ 694,979 Special mention 198 — 30 1,061 — — — 1,289 Classified 11 2,579 1,699 365 890 1,249 202 6,995 Total residential real estate loans $ 41,103 $ 199,081 $ 117,390 $ 123,878 $ 60,849 $ 110,104 $ 50,858 $ 703,263 Current-period gross writeoffs $ — $ 42 $ — $ 7 $ — $ — $ — $ 49 Current-period recoveries — — — — — 149 — 149 Current period net writeoffs (recoveries) $ — $ 42 $ — $ 7 $ — $ (149 ) $ — $ (100 ) Term Loans Amortized Cost Basis by Origination Year 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Total Commercial and industrial: Risk rating: Pass $ 126,922 $ 253,195 $ 185,905 $ 70,454 $ 23,380 $ 42,005 $ 683,276 $ 1,385,137 Special mention 300 297 1,568 954 6,196 18,737 1,700 29,752 Classified 608 11,415 2,031 2,472 9,769 5,226 9,087 40,608 Total commercial and industrial loans $ 127,830 $ 264,907 $ 189,504 $ 73,880 $ 39,345 $ 65,968 $ 694,063 $ 1,455,497 Current-period gross writeoffs $ — $ — $ 63 $ 56 $ 108 $ 131 $ 822 $ 1,180 Current-period recoveries — 12 20 55 47 29 6 169 Current period net (recoveries) writeoffs $ — $ (12 ) $ 43 $ 1 $ 61 $ 102 $ 816 $ 1,011 Mortgage Warehouse Lines of Credit: Risk rating: Pass $ — $ — $ — $ — $ — $ — $ 437,257 $ 437,257 Current-period gross writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Current-period recoveries — — — — — — — — Current period net writeoffs $ — $ — $ — $ — $ — $ — $ — $ — Consumer: Risk rating: Pass $ 1,588 $ 6,844 $ 3,029 $ 607 $ 281 $ 156 $ 6,142 $ 18,647 Classified 1 17 72 23 11 36 21 181 Total consumer loans $ 1,589 $ 6,861 $ 3,101 $ 630 $ 292 $ 192 $ 6,163 $ 18,828 Current-period gross writeoffs $ — $ 6 $ 4 $ 10 $ — $ 4 $ — $ 24 Current-period recoveries — — — — 1 2 1 4 Current period net writeoffs (recoveries) $ — $ 6 $ 4 $ 10 $ (1 ) $ 2 $ (1 ) $ 20 The recorded investment in loans by credit quality indicator at December 31, 2019, excluding loans held for sale, were as follows: December 31, 2019 (Dollars in thousands) Pass Special Mention Substandard Doubtful Loss Total Loans secured by real estate: 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 LHFI $ 4,035,471 $ 42,664 $ 65,060 $ — $ — $ 4,143,195
Loan Portfolio Aging Analysis	The following tables present the Company's loan portfolio aging analysis at the dates indicated: March 31, 2020 (Dollars in thousands) 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 Loans secured by real estate: Commercial real estate $ 7,890 $ 665 $ 6,427 $ 14,982 $ 1,287,538 $ 1,302,520 $ — Construction/land/land development 9,612 26 — 9,638 554,182 563,820 — Residential real estate 5,135 126 621 5,882 697,381 703,263 — Total real estate 22,637 817 7,048 30,502 2,539,101 2,569,603 — Commercial and industrial 6,902 312 13,073 20,287 1,435,210 1,455,497 — Mortgage warehouse lines of credit — — — — 437,257 437,257 — Consumer 165 53 11 229 18,599 18,828 — Total LHFI $ 29,704 $ 1,182 $ 20,132 $ 51,018 $ 4,430,167 $ 4,481,185 $ — December 31, 2019 (Dollars in thousands) 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 Loans secured by real estate: 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 LHFI $ 8,412 $ 3,123 $ 18,445 $ 29,980 $ 4,113,215 $ 4,143,195 $ —
Allowance for Loan Losses by Portfolio Segment	The following tables detail activity in the allowance for credit losses by portfolio segment. Accrued interest of $12.6 million was not included in the book value for the purposes of calculating the allowance at March 31, 2020 . Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Three Months Ended March 31, 2020 (Dollars in thousands) Beginning Balance Impact of Adopting ASC 326 Charge-offs Recoveries Provision (1) Ending Balance Loans secured by real estate: Commercial real estate $ 10,013 $ (5,052 ) $ 172 $ 2 $ 4,463 $ 9,254 Construction/land/land development 3,711 1,141 — — 202 5,054 Residential real estate 6,332 (2,526 ) 49 149 589 4,495 Commercial and industrial 16,960 7,296 1,180 169 12,578 35,823 Mortgage warehouse lines of credit 262 29 — — 488 779 Consumer 242 360 24 4 76 658 Total $ 37,520 $ 1,248 $ 1,425 $ 324 $ 18,396 $ 56,063 ____________________________ (1) The $18.5 million provision for credit losses on the condensed consolidated statements of income includes a $18.4 million net loan loss provision and a $135,000 provision for off-balance sheet commitments for the three months ended March 31, 2020 . The provision for loan credit losses for the first quarter of 2020 was driven by a significant increase in uncertainty related to the economic impact of the current COVID-19 pandemic. Based upon the requirement of CECL, economic forecasts are essential for estimating the life of loan losses. For periods prior to January 1, 2020, the incurred loss model did not require a life of loan loss estimation. The increased risk, as reflected in current and forecast adjustments, resulted in approximately $11.2 million in provision expense across the Company’s risk pools. An additional $6.0 million in provision expense was due to the current and forecast effects of individually evaluated loans. The provision for commercial real estate loans includes approximately $3.0 million in increased credit allowances related to individually evaluated loans. The provision for commercial and industrial loans includes $5.4 million related to current and forecast factors as well as approximately $3.0 million related to individually evaluated loans. The only significant charge-off in commercial and industrial loans during the first quarter of 2020 was for $732,000 on an operating loan secured by equipment. Three Months Ended March 31, 2019 (Dollars in thousands) Beginning Balance Charge-offs Recoveries Provision (Benefit) (1) Ending Balance Loans secured by real estate: Commercial real estate $ 8,999 $ 89 $ 51 $ 297 $ 9,258 Construction/land/land development 3,331 — 1 347 3,679 Residential real estate 5,705 — 27 (155 ) 5,577 Commercial and industrial 15,616 511 1,074 296 16,475 Mortgage warehouse lines of credit 316 — — 49 365 Consumer 236 8 7 (11 ) 224 Total $ 34,203 $ 608 $ 1,160 $ 823 $ 35,578 ____________________________ (1) The $1.0 million provision for credit losses on the condensed consolidated statements of income includes a $823,000 net loan loss provision and a $182,000 release of provision for off-balance sheet commitments for the three months ended March 31, 2019 .
Impaired Loans	The following tables present the balance of loans receivable by method of impairment evaluation at December 31, 2019 : (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. The following table present impaired loans at December 31, 2019 . No mortgage warehouse lines of credit were impaired at December 31, 2019 . (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
Non-performing (Nonaccrual) Loans Held for Investment	Nonaccrual LHFI were as follows: March 31, 2020 December 31, 2019 (Dollars in thousands) Nonaccrual With No Allowance for Credit Loss Nonaccrual Nonaccrual Loans secured by real estate: Commercial real estate $ 2,164 $ 11,306 $ 6,994 Construction/land/land development 3,661 3,850 4,337 Residential real estate 3,148 4,076 5,132 Total real estate 8,973 19,232 16,463 Commercial and industrial 746 13,619 14,520 Consumer 18 181 163 Total $ 9,737 $ 33,032 $ 31,146
Loans Classified as Troubled Debt Restructurings (TDRs)	The following is a summary of loans classified as TDRs. (Dollars in thousands) March 31, 2020 December 31, 2019 TDRs Nonaccrual TDRs $ 6,034 $ 6,609 Performing TDRs 1,885 1,843 Total $ 7,919 $ 8,452 Three Months Ended March 31, 2020 (Dollars in thousands) Number of Loans Restructured Pre-Modification Recorded Balance Term Concessions Interest Rate Concessions Combination of Term and Rate Concessions Total Modifications Commercial and industrial 2 $ 128 $ 127 $ — $ 127 Total 2 $ 128 $ 127 $ — $ — $ 127 Three Months Ended March 31, 2019 (Dollars in thousands) Number of Loans Restructured Pre-Modification Recorded Balance Term Concessions Interest Rate Concessions Combination of Term and Rate Concessions Total Modifications Loans secured by real estate: Construction/land/land development 1 $ 361 $ — $ — $ 360 $ 360 Commercial and industrial 1 19 18 — 18 Total 2 $ 380 $ 18 $ — $ 360 $ 378

Fair Value of Financial Instr_2

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value 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 March 31, 2020 , and December 31, 2019 , segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2020 (Dollars in thousands) Level 1 Level 2 Level 3 Total State and municipal securities $ — $ 131,537 $ 36,425 $ 167,962 Corporate bonds — 19,459 — 19,459 U.S. government and agency securities — 4,765 — 4,765 Commercial mortgage-backed securities — 12,159 — 12,159 Residential mortgage-backed securities — 229,719 — 229,719 Commercial collateralized mortgage obligations — 12,479 — 12,479 Residential collateralized mortgage obligations — 155,094 — 155,094 Securities available for sale — 565,212 36,425 601,637 Securities carried at fair value through income — — 12,242 12,242 Loans held for sale — 46,348 — 46,348 Loans at fair value — — 17,589 17,589 Mortgage servicing rights — — 16,122 16,122 Other assets - derivatives — 28,052 — 28,052 Total recurring fair value measurements - assets $ — $ 639,612 $ 82,378 $ 721,990 Other liabilities - derivatives $ — $ (28,377 ) $ — $ (28,377 ) Total recurring fair value measurements - liabilities $ — $ (28,377 ) $ — $ (28,377 ) 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 and 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 )
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 three months ended March 31, 2020 and 2019 , 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, 2020 $ 17,670 $ 20,697 $ 38,173 $ 11,513 Gain (loss) recognized in earnings: Mortgage banking revenue (1) — (5,228 ) — — Other noninterest income 166 — — 729 Gain recognized in accumulated other comprehensive income — — 160 — Purchases, issuances, sales and settlements: Originations — 653 — — Purchases — — — — Sales — (1,908 ) — Settlements (247 ) — — — Balance at March 31, 2020 $ 17,589 $ 16,122 $ 36,425 $ 12,242 Balance at January 1, 2019 $ 18,571 $ 25,114 $ 39,361 $ 11,361 Gain (loss) recognized in earnings: Mortgage banking revenue (1) — (1,990 ) — — Other noninterest income 72 — — 149 Gain recognized in accumulated other comprehensive income — — 694 — Purchases, issuances, sales, and settlements: Originations — 283 — — Purchases — — — — Settlements (256 ) — (1,748 ) — Balance at March 31, 2019 $ 18,387 $ 23,407 $ 38,307 $ 11,510 ____________________________ (1) Total 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: March 31, 2020 December 31, 2019 Range Weighted Average (1) Weighted Average (1) Prepayment speeds 10.01% - 27.33% 16.06 % 12.46 % Discount rates 8.73% - 9.98% 9.20 9.55 __________________________ (1) The weighted average was calculated with reference to the principle balance of the underlying mortgages.
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. March 31, 2020 (Dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale (1) $ 46,348 $ 44,362 $ 1,986 Commercial real estate LHFI (2) 17,589 17,120 469 Securities carried at fair value through income 12,242 11,070 1,172 Total $ 76,179 $ 72,552 $ 3,627 ____________________________ (1) $840,000 of loans held for sale were designated as nonaccrual or 90 days or more past due at March 31, 2020 . Of this balance, $576,000 was guaranteed by U.S. government agencies. (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 March 31, 2020 . 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 LHFI (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, $709,000 was guaranteed by U.S. Government agencies. (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 . Changes in the fair value of assets for which the Company elected the fair value option are classified in the condensed consolidated statement of income line items reflected in the following table. (Dollars in thousands) Three Months Ended March 31, Changes in fair value included in noninterest income: 2020 2019 Mortgage banking revenue: Mortgage loans held for sale $ 1,046 $ 37 Other income: Loans at fair value held for investment 166 72 Securities carried at fair value through income 729 149 Total impact on other income (1) 895 221 Total fair value option impact on noninterest income $ 1,941 $ 258 ____________________________ (1) The fair value option impact on other income is offset by the derivative gain/loss recognized in other income. Please see Note 7 - 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) March 31, 2020 December 31, 2019 Financial assets: Carrying Estimated Carrying Value Estimated Fair Value Level 1 inputs: Cash and cash equivalents $ 560,179 $ 560,179 $ 291,518 $ 291,518 Level 2 inputs: Non-marketable equity securities held in other financial institutions 52,267 52,267 39,808 39,808 Accrued interest and loan fees receivable 16,881 16,881 16,430 16,430 Level 3 inputs: Securities held to maturity 28,383 29,400 28,620 29,523 LHFI, net (1) 4,407,533 4,418,284 4,088,005 3,940,347 Financial liabilities: Level 2 inputs: Deposits 4,556,246 4,564,487 4,228,612 4,081,430 FHLB advances and other borrowings 716,909 701,555 417,190 425,318 Subordinated debentures 78,539 76,521 9,671 10,717 Accrued interest payable 3,062 3,062 2,822 2,822 ____________________________ (1) LHFI, net does not include loans for which the fair value option had been elected at March 31, 2020 , or December 31, 2019 , as these loans are carried at fair value on a recurring basis.

Mortgage Banking (Tables)

Mortgage Banking (Tables)	3 Months Ended
	Mar. 31, 2020
Mortgage Banking [Abstract]
Mortgage Banking Operations	The following table presents the Company's revenue from mortgage banking operations: (Dollars in thousands) Three Months Ended March 31, Mortgage banking revenue 2020 2019 Origination $ 275 $ 130 Gain on sale of loans held for sale 1,873 1,097 Servicing 1,601 1,699 Total gross mortgage revenue 3,749 2,926 Mortgage HFS and pipeline fair value adjustment 1,266 210 MSR valuation adjustment, net of amortization (5,228 ) (1,990 ) MSR hedge impact 2,982 1,460 Mortgage banking revenue $ 2,769 $ 2,606
Schedule of Activity in Mortgages Servicing Rights (MSRs)	Activity in MSRs was as follows: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Balance at beginning of period $ 20,697 $ 25,114 Addition of servicing rights 653 283 Valuation adjustment, net of amortization (5,228 ) (1,990 ) Balance at end of period $ 16,122 $ 23,407

Borrowings (Tables)

Borrowings (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Summary of Borrowed Funds	Borrowed funds are summarized as follows: March 31, December 31, (Dollars in thousands) 2020 2019 Overnight repurchase agreements with depositors $ 15,533 $ 16,717 Short-term FHLB advances 400,000 100,000 GNMA repurchase liability 28,975 27,860 Long-term FHLB advances 272,401 272,613 Total FHLB advances and other borrowings $ 716,909 $ 417,190 Subordinated debentures, net $ 78,539 $ 9,671 Additional details of certain FHLB advances are as follows: (Dollars in thousands) Amount Interest Rate Maturity Date At March 31, 2020: Short-term FHLB advance, fixed rate $ 50,000 0.45 % 6/23/2020 Short-term FHLB advance, fixed rate 300,000 0.30 6/25/2020 Short-term FHLB advance, fixed rate 30,000 0.58 9/21/2020 Short-term FHLB advance, fixed rate 20,000 0.65 12/21/2020 Long-term FHLB advance, callable quarterly, fixed rate 250,000 1.65 8/23/2033 At December 31, 2019: Short-term FHLB advance, fixed rate 100,000 1.35 1/2/2020 Long-term FHLB advance callable quarterly, fixed rate 250,000 1.65 8/23/2033
Summary of Terms of Current Debentures	The following table is a summary of the terms of the current junior subordinated debentures at March 31, 2020 : (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) 5.08 % 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 January 29, 2020. (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.

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Values of Derivative Instruments on the Balance Sheet	The following tables disclose the fair value of derivative instruments in the Company's condensed consolidated balance sheets at March 31, 2020 , and December 31, 2019 , as well as the effect of these derivative instruments on the Company's condensed consolidated statements of income for the three months ended March 31, 2020 and 2019 : (Dollars in thousands) Notional Amounts (1) Fair Values Derivatives designated as cash flow hedging instruments: March 31, 2020 December 31, 2019 March 31, 2020 December 31, 2019 Interest rate swaps included in other assets (liabilities) $ 21,000 $ 10,500 $ (803 ) $ (101 ) Derivatives not designated as hedging instruments: Interest rate swaps included in other assets $ 266,081 $ 217,633 $ 23,463 $ 8,425 Interest rate swaps included in other liabilities 294,600 246,397 (25,001 ) (9,278 ) Forward commitments to purchase mortgage-backed securities included in other assets 155,000 200,000 1,188 242 Forward commitments to sell residential mortgage loans included in other liabilities 126,700 60,600 (2,573 ) (109 ) Interest rate-lock commitments on residential mortgage loans included in other assets 145,088 37,382 3,401 717 $ 987,469 $ 762,012 $ 478 $ (3 ) ____________________________ (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 condensed consolidated balance sheets.
Weighted-Average Interest Rates Paid and Received for Interest Rate Swaps	The weighted-average interest rates paid and received for interest rate swaps at March 31, 2020 , were as follows: Weighted-Average Interest rate swaps: Interest Rate Paid Interest Rate Received Cash flow hedges 4.81 % 4.11 % Non-hedging interest rate swaps - financial institution counterparties 4.93 3.45 Non-hedging interest rate swaps - customer counterparties 3.52 4.93
Gains and Losses Recognized on Derivative Instruments Not Designated as Hedging Instruments	Gains and losses recognized on derivative instruments not designated as hedging instruments were as follows: (Dollars in thousands) Three Months Ended March 31, Derivatives not designated as hedging instruments: 2020 2019 Amount of gain (loss) recognized in mortgage banking revenue (1) $ 2,513 $ 1,311 Amount of (loss) gain recognized in other non-interest income (685 ) (225 ) ____________________________ (1) Gains and losses on these instruments are largely offset by market fluctuations in MSRs. See Note 7 - Mortgage Banking for more information on components of mortgage banking revenue.

Stock and Incentive Compensat_2

Stock and Incentive Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Share-based Compensation Cost Charged to Income	Share-based compensation cost charged to income for the three months ended March 31, 2020 and 2019 , is presented below: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Restricted stock $ 537 $ 470 Related tax benefits recognized in net income 113 99
Time-vested Award Activity	The following table summarizes the Company's time-vested award activity: Three Months Ended March 31, 2020 2019 Shares Weighted Average Grant-Date Fair Value Shares Weighted Average Grant-Date Fair Value Nonvested shares, January 1, 149,449 $ 35.15 174,407 $ 35.01 Granted — — 976 35.91 Vested (2,073 ) 25.81 (3,568 ) 25.25 Forfeited (4,129 ) 37.14 (1,550 ) 23.64 Nonvested shares, March 31, 143,247 35.23 170,265 35.32
Stock Option Activity	The table below summarizes the status of the Company's stock options and changes during the three months ended March 31, 2020 and 2019 . (Dollars in thousands, except per share amounts) Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value Three Months Ended March 31, 2019 Outstanding at January 1, 2019 274,000 $ 10.38 6.75 $ 6,493 Exercised (20,000 ) 8.25 — — Outstanding and exercisable at March 31, 2019 254,000 10.55 6.56 5,969 Three Months Ended March 31, 2020 Outstanding at January 1, 2020 254,000 $ 10.55 5.81 $ 6,932 Exercised (30,000 ) 8.25 — — Outstanding and exercisable at March 31, 2020 224,000 10.86 5.67 2,104

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes was as follows: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Federal income taxes: Current $ 3,376 $ 3,167 Deferred (3,995 ) (336 ) State income taxes: Current 319 268 Deferred (127 ) (10 ) Income tax (benefit) expense $ (427 ) $ 3,089 Effective income tax rate (130.98 )% 17.91 %
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: Three Months Ended March 31, (Dollars in thousands) 2020 2019 Income taxes computed at statutory rate 21.00 % 21.00 % Tax exempt revenue, net of nondeductible interest (45.46 ) (0.98 ) Low-income housing tax credits, net of amortization (38.15 ) (0.75 ) Other tax credits, net of add-backs (93.08 ) (1.74 ) Bank-owned life insurance income (35.69 ) (0.22 ) State income taxes, net of federal benefit 41.57 1.16 Stock-based compensation (7.79 ) (0.62 ) Nondeductible expenses and other 26.62 0.06 Total income tax expense (130.98 )% 17.91 %

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income includes the after-tax change in unrealized gains and losses on available for sale ("AFS") securities and cash flow hedging activities. (Dollars in thousands) Unrealized (Losses) Gains on AFS Securities Unrealized Gains (Losses) on Cash Flow Hedges Accumulated Other Comprehensive Income Balance at January 1, 2019 $ (2,601 ) $ 121 $ (2,480 ) Net change 4,078 (74 ) 4,004 Balance at March 31, 2019 $ 1,477 $ 47 $ 1,524 Balance at January 1, 2020 $ 6,412 $ (79 ) $ 6,333 Net change 10,044 (555 ) 9,489 Balance at March 31, 2020 $ 16,456 $ (634 ) $ 15,822

Capital and Regulatory Matters

Capital and Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Actual Capital Amounts and Ratios	The actual capital amounts and ratios of the Company and Bank at March 31, 2020 , and December 31, 2019 , are presented in the following table: (Dollars in thousands) Actual Minimum Capital Required - Basel III To be Well Capitalized Under Prompt Corrective Action Provisions March 31, 2020 Amount Ratio Amount Ratio Amount Ratio Common Equity Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. $ 565,017 10.86 % $ 364,191 7.00 % N/A N/A Origin Bank 554,119 10.68 363,187 7.00 $ 337,245 6.50 % Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. 574,370 11.04 442,223 8.50 N/A N/A Origin Bank 554,119 10.68 441,012 8.50 415,070 8.00 Total Capital to Risk-Weighted Assets Origin Bancorp, Inc. 695,633 13.38 545,900 10.50 N/A N/A Origin Bank 675,382 13.02 544,663 10.50 518,727 10.00 Leverage Ratio Origin Bancorp, Inc. 574,370 10.71 214,517 4.00 N/A N/A Origin Bank 554,119 10.36 213,946 4.00 267,432 5.00 December 31, 2019 Common Equity Tier 1 Capital to Risk-Weighted Assets 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

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Off-Balance Sheet Financial Instruments	These off-balance sheet financial instruments are summarized below: (Dollars in thousands) March 31, 2020 December 31, 2019 Commitments to extend credit $ 1,355,644 $ 1,374,055 Standby letters of credit 49,118 39,344

Significant Accounting Polici_4

Significant Accounting Policies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)centersegment	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	$ 56,063		$ 37,520	$ 35,578	$ 34,203
Reserve for off-balance sheet exposures			1,810
Municipal securities	$ 96		0
Number of banking centers | center	43
Number of segments | segment	1
Real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses			20,056
Real estate | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	$ 9,254		10,013	9,258	8,999
Real estate | Construction/land/land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	5,054		3,711	3,679	3,331
Real estate | Residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	4,495		6,332	5,577	5,705
Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	35,823		16,960	16,475	15,616
Mortgage warehouse lines of credit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	779		262	365	316
Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses	$ 658		242	$ 224	$ 236
Transition Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		$ 1,248	1,248
Reserve for off-balance sheet exposures		(381)
Municipal securities		96	96
Transition Adjustment | Real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		(6,437)
Transition Adjustment | Real estate | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		(5,052)	(5,052)
Transition Adjustment | Real estate | Construction/land/land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		1,141	1,141
Transition Adjustment | Real estate | Residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		(2,526)	(2,526)
Transition Adjustment | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		7,296	7,296
Transition Adjustment | Mortgage warehouse lines of credit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		29	29
Transition Adjustment | Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		360	$ 360
ACL Balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		38,768
Reserve for off-balance sheet exposures		1,429
Municipal securities		96
ACL Balance | Real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		13,619
ACL Balance | Real estate | Commercial real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		4,961
ACL Balance | Real estate | Construction/land/land development
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		4,852
ACL Balance | Real estate | Residential real estate
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		3,806
ACL Balance | Commercial and industrial
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		24,256
ACL Balance | Mortgage warehouse lines of credit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		291
ACL Balance | Consumer
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans, allowance for credit losses		$ 602

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Numerator:
Net income (basic and diluted)	$ 753	$ 14,155
Denominator:
Weighted average common shares outstanding (in shares)	23,353,601	23,569,576
Dilutive effect of stock-based awards (in shares)	176,611	206,773
Weighted average diluted common shares outstanding (in shares)	23,530,212	23,776,349
Basic earnings per common share ($ per share)	$ 0.03	$ 0.60
Diluted earnings per common share ($ per share)	$ 0.03	$ 0.60

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available for sale
Available for sale, amortized cost	$ 580,910	$ 493,058
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	580,910
Available for sale, gross unrealized gains	21,231	8,628
Available for sale, gross unrealized losses	(504)	(616)
Available for sale, fair value	601,637	501,070
Held to maturity
Held to maturity, net of allowance for credit losses of $96 at March 31, 2020 (fair value of $29,400 and $29,523 at March 31, 2020, and December 31, 2019, respectively)	28,479
Held to maturity, allowance for credit losses	(96)	0
Held to maturity, net carrying amount	28,383	28,620
Securities held to maturity, fair value	29,400	29,523
Securities carried at fair value through income, fair value	12,242	11,513
State and municipal securities
Available for sale
Available for sale, amortized cost	160,828	96,180
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	160,828
Available for sale, gross unrealized gains	7,592	3,039
Available for sale, gross unrealized losses	(458)	(35)
Available for sale, fair value	167,962	99,184
Held to maturity
Held to maturity, net of allowance for credit losses of $96 at March 31, 2020 (fair value of $29,400 and $29,523 at March 31, 2020, and December 31, 2019, respectively)	28,479	28,620
Held to maturity, allowance for credit losses	(96)
Held to maturity, net carrying amount	28,383
Held to maturity, gross unrealized gains	921	903
Held to maturity, gross unrealized losses	0	0
Securities held to maturity, fair value	29,400	29,523
Securities carried at fair value through income, amortized cost	11,070	11,070
Securities carried at fair value through income, fair value	12,242	11,513
Corporate bonds
Available for sale
Available for sale, amortized cost	18,943	16,037
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	18,943
Available for sale, gross unrealized gains	555	780
Available for sale, gross unrealized losses	(39)	0
Available for sale, fair value	19,459	16,817
U.S. Government and agency securities
Available for sale
Available for sale, amortized cost	4,522	5,063
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	4,522
Available for sale, gross unrealized gains	250	183
Available for sale, gross unrealized losses	(7)	(8)
Available for sale, fair value	4,765	5,238
Commercial mortgage-backed securities
Available for sale
Available for sale, amortized cost	11,781	11,882
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	11,781
Available for sale, gross unrealized gains	378	262
Available for sale, gross unrealized losses	0	0
Available for sale, fair value	12,159	12,144
Residential mortgage-backed securities
Available for sale
Available for sale, amortized cost	221,766	204,650
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	221,766
Available for sale, gross unrealized gains	7,953	3,105
Available for sale, gross unrealized losses	0	(249)
Available for sale, fair value	229,719	207,506
Commercial collateralized mortgage obligations
Available for sale
Available for sale, amortized cost	12,356	4,321
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	12,356
Available for sale, gross unrealized gains	123	73
Available for sale, gross unrealized losses	0	0
Available for sale, fair value	12,479	4,394
Residential collateralized mortgage obligations
Available for sale
Available for sale, amortized cost	150,714	154,925
Available for sale, allowance for credit losses	0
Available-for-sale, net carrying amount	150,714
Available for sale, gross unrealized gains	4,380	1,186
Available for sale, gross unrealized losses	0	(324)
Available for sale, fair value	$ 155,094	$ 155,787

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value
Less than 12 Months	$ 16,363	$ 56,446
12 Months or More	622	39,855
Total	16,985	96,301
Unrealized Loss
Less than 12 Months	(497)	(304)
12 Months or More	(7)	(312)
Total	(504)	(616)
State and municipal securities
Fair Value
Less than 12 Months	13,402	6,996
12 Months or More	0	0
Total	13,402	6,996
Unrealized Loss
Less than 12 Months	(458)	(35)
12 Months or More	0	0
Total	(458)	(35)
Corporate bonds
Fair Value
Less than 12 Months	2,961
12 Months or More	0
Total	2,961
Unrealized Loss
Less than 12 Months	(39)
12 Months or More	0
Total	(39)
U.S. Government and agency securities
Fair Value
Less than 12 Months	0	0
12 Months or More	622	663
Total	622	663
Unrealized Loss
Less than 12 Months	0	0
12 Months or More	(7)	(8)
Total	$ (7)	(8)
Residential mortgage-backed securities
Fair Value
Less than 12 Months		29,184
12 Months or More		14,917
Total		44,101
Unrealized Loss
Less than 12 Months		(151)
12 Months or More		(98)
Total		(249)
Residential collateralized mortgage obligations
Fair Value
Less than 12 Months		20,266
12 Months or More		24,275
Total		44,541
Unrealized Loss
Less than 12 Months		(118)
12 Months or More		(206)
Total		$ (324)

Securities - Narrative (Details

Securities - Narrative (Details)	Mar. 31, 2020USD ($)security
Investments, Debt and Equity Securities [Abstract]
Number of securities in an unrealized loss positions (in security) | security	24
Available for sale, allowance for credit losses	$ 0
Held-to-maturity securities, accrued interest	2,700,000
Held-to-maturity securities past due	0
Held-to-maturity securities nonaccrual status	$ 0

Securities - Allowance for Cred

Securities - Allowance for Credit Losses for Held-to-maturity Securities (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance at January 1, 2020	$ 0
Credit loss expense	0
Balance at March 31, 2020	96
Transition Adjustment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Balance at January 1, 2020	$ 96

Securities - Proceeds from Sale

Securities - Proceeds from Sales of Securities Available for Sale and Gross Gains (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales/calls	$ 22,375	$ 0
Gross realized gains	103
Gross realized losses	(49)
Tax expense related to securities gains/losses	$ 11

Securities - Contractual Maturi

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Amortized Cost
Due in one year or less	$ 3,485
Due after one year through five years	44,155
Due after five years through ten years	54,978
Due after ten years	81,675
Available for sale, amortized cost	580,910	$ 493,058
Fair Value
Due in one year or less	3,517
Due after one year through five years	46,082
Due after five years through ten years	57,246
Due after ten years	85,341
Fair Value	601,637	501,070
Amortized Cost
Due in one year or less	0
Due after one year through five years	13,276
Due after five years through ten years	15,203
Due after ten years	0
Held to maturity, amortized cost	28,479
Fair Value
Due in one year or less	0
Due after one year through five years	13,483
Due after five years through ten years	15,917
Due after ten years	0
Fair Value	29,400	29,523
Commercial mortgage-backed securities
Amortized Cost
Without single maturity date	11,781
Available for sale, amortized cost	11,781	11,882
Fair Value
Without single maturity date	12,159
Fair Value	12,159	12,144
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	0
Residential mortgage-backed securities
Amortized Cost
Without single maturity date	221,766
Available for sale, amortized cost	221,766	204,650
Fair Value
Without single maturity date	229,719
Fair Value	229,719	207,506
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	0
Commercial collateralized mortgage obligations
Amortized Cost
Without single maturity date	12,356
Available for sale, amortized cost	12,356	4,321
Fair Value
Without single maturity date	12,479
Fair Value	12,479	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	150,714
Available for sale, amortized cost	150,714	154,925
Fair Value
Without single maturity date	155,094
Fair Value	155,094	$ 155,787
Amortized Cost
Without single maturity date	0
Fair Value
Without single maturity date	$ 0

Securities - Securities Pledged

Securities - Securities Pledged as Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Carrying value of securities pledged to secure public deposits
Schedule of Held-to-maturity Securities [Line Items]
Securities pledged as collateral	$ 171,262	$ 285,552
Carrying value of securities pledged to repurchase agreements
Schedule of Held-to-maturity Securities [Line Items]
Securities pledged as collateral	$ 19,664	$ 20,356

Loans - Schedule of Loans (Deta

Loans - Schedule of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Loans and Leases Receivable Disclosure [Line Items]
Loans held for sale	$ 75,322	$ 64,837
Loans held for investment	4,463,596	4,125,525
Loans at fair value	17,589	17,670
Total	4,481,185	4,143,195
Less: allowance for credit losses	56,063	37,520	$ 35,578	$ 34,203
Net LHFI	4,425,122	4,105,675
Net deferred loan fees	4,000	3,600
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	2,552,014	2,486,420
Total	2,569,603	2,504,090
Less: allowance for credit losses		20,056
Real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	1,284,931	1,279,177
Loans at fair value	17,600	17,700
Total	1,302,520	1,296,847
Less: allowance for credit losses	9,254	10,013	9,258	8,999
Real estate | Construction/land/land development
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	563,820	517,688
Total	563,820	517,688
Less: allowance for credit losses	5,054	3,711	3,679	3,331
Real estate | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	703,263	689,555
Total	703,263	689,555
Less: allowance for credit losses	4,495	6,332	5,577	5,705
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	1,455,497	1,343,475
Total	1,455,497	1,343,475
Less: allowance for credit losses	35,823	16,960	16,475	15,616
Mortgage warehouse lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	437,257	274,659
Total	437,257	274,659
Less: allowance for credit losses	779	262	365	316
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	18,828	20,971
Total	18,828	20,971
Less: allowance for credit losses	$ 658	$ 242	$ 224	$ 236

Loans - Narrative (Details)

Loans - Narrative (Details)	3 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)	Apr. 30, 2020USD ($)	Dec. 31, 2019USD ($)
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value	$ 17,589,000			$ 17,670,000
Accrued interest	12,600,000
Provision expense as a result of COVID-19	11,200,000
Provision expense as a result of COVID-19 due to effects of individually evaluated loans	6,000,000
Nonaccrual mortgage loans held for sale recorded at fair value	$ 840,000			927,000
Number of loans that defaulted | loan	2
Nonperforming Financial Instruments
Loans and Leases Receivable Disclosure [Line Items]
Gross interest income that would have been recorded	$ 354,000	$ 355,000
Interest income on non-accrual loans	0	$ 0
Outstanding principal balance	2,300,000
Real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value	17,600,000			$ 17,700,000
Provision expense as a result of COVID-19	3,000,000
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Provision expense as a result of COVID-19	5,400,000
Provision expense as a result of COVID-19 due to effects of individually evaluated loans	3,000,000
Charge-off as a result of COVID-19	$ 732,000
Subsequent Event
Loans and Leases Receivable Disclosure [Line Items]
Number of loans in COVID-19 related forbearance			1,242
Loans in COVID-19 related forbearance			$ 880,200,000

Loans - Loans by Credit Quality

Loans - Loans by Credit Quality Indicator (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 4,463,596,000		$ 4,125,525,000
Total	4,481,185,000		4,143,195,000
Total, Current-period gross writeoffs	1,425,000	$ 608,000
Total, Current-period recoveries	324,000	1,160,000
Loans at fair value	17,589,000		17,670,000
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total			4,035,471,000
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total			42,664,000
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			65,060,000
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Total	2,552,014,000		2,486,420,000
Total	2,569,603,000		2,504,090,000
Real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Total			2,462,440,000
Real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total			14,186,000
Real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			27,464,000
Real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2020	101,330,000
2019	303,632,000
2018	355,358,000
2017	206,398,000
2016	83,058,000
Prior	211,684,000
Revolving Loans Amortized Cost Basis	23,471,000
Total	1,284,931,000		1,279,177,000
Total	1,302,520,000		1,296,847,000
2020, Current-period gross writeoffs	0
2019, Current-period gross writeoffs	0
2018, Current-period gross writeoffs	0
2017, Current-period gross writeoffs	150,000
2016, Current-period gross writeoffs	0
Prior, Current-period gross writeoffs	22,000
Revolving Loans Amortized Cost Basis, Current-period gross writeoffs	0
Total, Current-period gross writeoffs	172,000	89,000
2020, Current-period recoveries	0
2019, Current-period recoveries	0
2018, Current-period recoveries	0
2017, Current-period recoveries	0
2016, Current-period recoveries	0
Prior, Current-period recoveries	2,000
Revolving Loans Amortized Cost Basis, Current-period recoveries	0
Total, Current-period recoveries	2,000	51,000
2020, Current period net writeoffs	0
2019, Current period net writeoffs	0
2018, Current period net writeoffs	0
2017, Current period net writeoffs	150,000
2016, Current period net writeoffs	0
Prior, Current period net writeoffs	20,000
Revolving Loans Amortized Cost Basis, Current period net writeoffs	0
Total, Current period net writeoffs	170,000
Loans at fair value	17,600,000		17,700,000
Real estate | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	101,330,000
2019	302,613,000
2018	349,746,000
2017	193,121,000
2016	82,816,000
Prior	197,807,000
Revolving Loans Amortized Cost Basis	23,046,000
Total	1,250,479,000
Total			1,269,493,000
Real estate | Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	416,000
2017	0
2016	0
Prior	11,907,000
Revolving Loans Amortized Cost Basis	350,000
Total	12,673,000
Total			12,479,000
Real estate | Commercial real estate | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	1,019,000
2018	5,196,000
2017	13,277,000
2016	242,000
Prior	1,970,000
Revolving Loans Amortized Cost Basis	75,000
Total	21,779,000
Real estate | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			14,875,000
Real estate | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Commercial real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Construction/land/land development
Financing Receivable, Credit Quality Indicator [Line Items]
2020	46,210,000
2019	204,960,000
2018	211,062,000
2017	73,083,000
2016	9,681,000
Prior	2,377,000
Revolving Loans Amortized Cost Basis	16,447,000
Total	563,820,000		517,688,000
Total	563,820,000		517,688,000
2020, Current-period gross writeoffs	0
2019, Current-period gross writeoffs	0
2018, Current-period gross writeoffs	0
2017, Current-period gross writeoffs	0
2016, Current-period gross writeoffs	0
Prior, Current-period gross writeoffs	0
Revolving Loans Amortized Cost Basis, Current-period gross writeoffs	0
Total, Current-period gross writeoffs	0	0
2020, Current-period recoveries	0
2019, Current-period recoveries	0
2018, Current-period recoveries	0
2017, Current-period recoveries	0
2016, Current-period recoveries	0
Prior, Current-period recoveries	0
Revolving Loans Amortized Cost Basis, Current-period recoveries	0
Total, Current-period recoveries	0	1,000
2020, Current period net writeoffs	0
2019, Current period net writeoffs	0
2018, Current period net writeoffs	0
2017, Current period net writeoffs	0
2016, Current period net writeoffs	0
Prior, Current period net writeoffs	0
Revolving Loans Amortized Cost Basis, Current period net writeoffs	0
Total, Current period net writeoffs	0
Real estate | Construction/land/land development | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	45,874,000
2019	203,582,000
2018	210,678,000
2017	69,863,000
2016	9,583,000
Prior	2,191,000
Revolving Loans Amortized Cost Basis	16,447,000
Total	558,218,000		512,901,000
Real estate | Construction/land/land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	336,000
2019	146,000
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	482,000		149,000
Real estate | Construction/land/land development | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	1,232,000
2018	384,000
2017	3,220,000
2016	98,000
Prior	186,000
Revolving Loans Amortized Cost Basis	0
Total	5,120,000
Real estate | Construction/land/land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			4,638,000
Real estate | Construction/land/land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Construction/land/land development | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
2020	41,103,000
2019	199,081,000
2018	117,390,000
2017	123,878,000
2016	60,849,000
Prior	110,104,000
Revolving Loans Amortized Cost Basis	50,858,000
Total	703,263,000		689,555,000
Total	703,263,000		689,555,000
2020, Current-period gross writeoffs	0
2019, Current-period gross writeoffs	42,000
2018, Current-period gross writeoffs	0
2017, Current-period gross writeoffs	7,000
2016, Current-period gross writeoffs	0
Prior, Current-period gross writeoffs	0
Revolving Loans Amortized Cost Basis, Current-period gross writeoffs	0
Total, Current-period gross writeoffs	49,000	0
2020, Current-period recoveries	0
2019, Current-period recoveries	0
2018, Current-period recoveries	0
2017, Current-period recoveries	0
2016, Current-period recoveries	0
Prior, Current-period recoveries	149,000
Revolving Loans Amortized Cost Basis, Current-period recoveries	0
Total, Current-period recoveries	149,000	27,000
2020, Current period net writeoffs	0
2019, Current period net writeoffs	42,000
2018, Current period net writeoffs	0
2017, Current period net writeoffs	7,000
2016, Current period net writeoffs	0
Prior, Current period net writeoffs	(149,000)
Revolving Loans Amortized Cost Basis, Current period net writeoffs	0
Total, Current period net writeoffs	(100,000)
Real estate | Residential real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	40,894,000
2019	196,502,000
2018	115,661,000
2017	122,452,000
2016	59,959,000
Prior	108,855,000
Revolving Loans Amortized Cost Basis	50,656,000
Total	694,979,000		680,046,000
Real estate | Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	198,000
2019	0
2018	30,000
2017	1,061,000
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Total	1,289,000		1,558,000
Real estate | Residential real estate | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	11,000
2019	2,579,000
2018	1,699,000
2017	365,000
2016	890,000
Prior	1,249,000
Revolving Loans Amortized Cost Basis	202,000
Total	6,995,000
Real estate | Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			7,951,000
Real estate | Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Real estate | Residential real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2020	127,830,000
2019	264,907,000
2018	189,504,000
2017	73,880,000
2016	39,345,000
Prior	65,968,000
Revolving Loans Amortized Cost Basis	694,063,000
Total	1,455,497,000		1,343,475,000
Total	1,455,497,000		1,343,475,000
2020, Current-period gross writeoffs	0
2019, Current-period gross writeoffs	0
2018, Current-period gross writeoffs	63,000
2017, Current-period gross writeoffs	56,000
2016, Current-period gross writeoffs	108,000
Prior, Current-period gross writeoffs	131,000
Revolving Loans Amortized Cost Basis, Current-period gross writeoffs	822,000
Total, Current-period gross writeoffs	1,180,000	511,000
2020, Current-period recoveries	0
2019, Current-period recoveries	12,000
2018, Current-period recoveries	20,000
2017, Current-period recoveries	55,000
2016, Current-period recoveries	47,000
Prior, Current-period recoveries	29,000
Revolving Loans Amortized Cost Basis, Current-period recoveries	6,000
Total, Current-period recoveries	169,000	1,074,000
2020, Current period net writeoffs	0
2019, Current period net writeoffs	(12,000)
2018, Current period net writeoffs	43,000
2017, Current period net writeoffs	1,000
2016, Current period net writeoffs	61,000
Prior, Current period net writeoffs	102,000
Revolving Loans Amortized Cost Basis, Current period net writeoffs	816,000
Total, Current period net writeoffs	1,011,000
Commercial and industrial | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	126,922,000
2019	253,195,000
2018	185,905,000
2017	70,454,000
2016	23,380,000
Prior	42,005,000
Revolving Loans Amortized Cost Basis	683,276,000
Total	1,385,137,000		1,277,564,000
Commercial and industrial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2020	300,000
2019	297,000
2018	1,568,000
2017	954,000
2016	6,196,000
Prior	18,737,000
Revolving Loans Amortized Cost Basis	1,700,000
Total	29,752,000		28,478,000
Commercial and industrial | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	608,000
2019	11,415,000
2018	2,031,000
2017	2,472,000
2016	9,769,000
Prior	5,226,000
Revolving Loans Amortized Cost Basis	9,087,000
Total	40,608,000
Commercial and industrial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			37,433,000
Commercial and industrial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Commercial and industrial | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Mortgage warehouse lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Total	437,257,000		274,659,000
Total	437,257,000		274,659,000
2020, Current-period gross writeoffs	0
2019, Current-period gross writeoffs	0
2018, Current-period gross writeoffs	0
2017, Current-period gross writeoffs	0
2016, Current-period gross writeoffs	0
Prior, Current-period gross writeoffs	0
Revolving Loans Amortized Cost Basis, Current-period gross writeoffs	0
Total, Current-period gross writeoffs	0	0
2020, Current-period recoveries	0
2019, Current-period recoveries	0
2018, Current-period recoveries	0
2017, Current-period recoveries	0
2016, Current-period recoveries	0
Prior, Current-period recoveries	0
Revolving Loans Amortized Cost Basis, Current-period recoveries	0
Total, Current-period recoveries	0	0
2020, Current period net writeoffs	0
2019, Current period net writeoffs	0
2018, Current period net writeoffs	0
2017, Current period net writeoffs	0
2016, Current period net writeoffs	0
Prior, Current period net writeoffs	0
Revolving Loans Amortized Cost Basis, Current period net writeoffs	0
Total, Current period net writeoffs	0
Mortgage warehouse lines of credit | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	437,257,000
Total	437,257,000		274,659,000
Mortgage warehouse lines of credit | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Mortgage warehouse lines of credit | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Mortgage warehouse lines of credit | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Mortgage warehouse lines of credit | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,589,000
2019	6,861,000
2018	3,101,000
2017	630,000
2016	292,000
Prior	192,000
Revolving Loans Amortized Cost Basis	6,163,000
Total	18,828,000		20,971,000
Total	18,828,000		20,971,000
2020, Current-period gross writeoffs	0
2019, Current-period gross writeoffs	6,000
2018, Current-period gross writeoffs	4,000
2017, Current-period gross writeoffs	10,000
2016, Current-period gross writeoffs	0
Prior, Current-period gross writeoffs	4,000
Revolving Loans Amortized Cost Basis, Current-period gross writeoffs	0
Total, Current-period gross writeoffs	24,000	8,000
2020, Current-period recoveries	0
2019, Current-period recoveries	0
2018, Current-period recoveries	0
2017, Current-period recoveries	0
2016, Current-period recoveries	1,000
Prior, Current-period recoveries	2,000
Revolving Loans Amortized Cost Basis, Current-period recoveries	1,000
Total, Current-period recoveries	4,000	$ 7,000
2020, Current period net writeoffs	0
2019, Current period net writeoffs	6,000
2018, Current period net writeoffs	4,000
2017, Current period net writeoffs	10,000
2016, Current period net writeoffs	(1,000)
Prior, Current period net writeoffs	2,000
Revolving Loans Amortized Cost Basis, Current period net writeoffs	(1,000)
Total, Current period net writeoffs	20,000
Consumer | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,588,000
2019	6,844,000
2018	3,029,000
2017	607,000
2016	281,000
Prior	156,000
Revolving Loans Amortized Cost Basis	6,142,000
Total	18,647,000		20,808,000
Consumer | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Consumer | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
2020	1,000
2019	17,000
2018	72,000
2017	23,000
2016	11,000
Prior	36,000
Revolving Loans Amortized Cost Basis	21,000
Total	$ 181,000
Consumer | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Total			163,000
Consumer | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Total			0
Consumer | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Total			$ 0

Loans - Loan Portfolio Aging An

Loans - Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 51,018	$ 29,980
Current Loans	4,430,167	4,113,215
Total	4,481,185	4,143,195
Accruing Loans 90 or More Days Past Due	0	0
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	29,704	8,412
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	1,182	3,123
Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	20,132	18,445
Real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	30,502	15,571
Current Loans	2,539,101	2,488,519
Total	2,569,603	2,504,090
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	22,637	6,660
Real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	817	2,051
Real estate | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	7,048	6,860
Real estate | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	14,982	6,808
Current Loans	1,287,538	1,290,039
Total	1,302,520	1,296,847
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	7,890	917
Real estate | Commercial real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	665	0
Real estate | Commercial real estate | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	6,427	5,891
Real estate | Construction/land/land development
Financing Receivable, Past Due [Line Items]
Total Past Due	9,638	3,758
Current Loans	554,182	513,930
Total	563,820	517,688
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	9,612	3,569
Real estate | Construction/land/land development | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	26	133
Real estate | Construction/land/land development | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	0	56
Real estate | Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	5,882	5,005
Current Loans	697,381	684,550
Total	703,263	689,555
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	5,135	2,174
Real estate | Residential real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	126	1,918
Real estate | Residential real estate | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	621	913
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Past Due	20,287	14,170
Current Loans	1,435,210	1,329,305
Total	1,455,497	1,343,475
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	6,902	1,588
Commercial and industrial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	312	1,037
Commercial and industrial | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	13,073	11,545
Mortgage warehouse lines of credit
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Current Loans	437,257	274,659
Total	437,257	274,659
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	229	239
Current Loans	18,599	20,732
Total	18,828	20,971
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	165	164
Consumer | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	53	35
Consumer | Loans Past Due 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 11	$ 40

Loans - Allowance for Loan Loss

Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 37,520	$ 34,203
Charge-offs	1,425	608
Recoveries	324	1,160
Provision (Benefit)	18,396	823
Ending Balance	56,063	35,578
Provision (benefit) for credit losses	18,531	1,005
Provision (release of provision) for off-balance sheet commitments	135	182
Real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	20,056
Real estate | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	10,013	8,999
Charge-offs	172	89
Recoveries	2	51
Provision (Benefit)	4,463	297
Ending Balance	9,254	9,258
Real estate | Construction/land/land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	3,711	3,331
Charge-offs	0	0
Recoveries	0	1
Provision (Benefit)	202	347
Ending Balance	5,054	3,679
Real estate | Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	6,332	5,705
Charge-offs	49	0
Recoveries	149	27
Provision (Benefit)	589	(155)
Ending Balance	4,495	5,577
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	16,960	15,616
Charge-offs	1,180	511
Recoveries	169	1,074
Provision (Benefit)	12,578	296
Ending Balance	35,823	16,475
Mortgage warehouse lines of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	262	316
Charge-offs	0	0
Recoveries	0	0
Provision (Benefit)	488	49
Ending Balance	779	365
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	242	236
Charge-offs	24	8
Recoveries	4	7
Provision (Benefit)	76	(11)
Ending Balance	658	$ 224
Transition Adjustment
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,248
Transition Adjustment | Real estate | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	(5,052)
Transition Adjustment | Real estate | Construction/land/land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	1,141
Transition Adjustment | Real estate | Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	(2,526)
Transition Adjustment | Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	7,296
Transition Adjustment | Mortgage warehouse lines of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	29
Transition Adjustment | Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning Balance	$ 360

Loans - Recorded Investment in

Loans - Recorded Investment in Loans and Allowance for Credit Losses by Loss Estimation Methodology (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		$ 4,093,051
Loan Balance Individually Evaluated		32,474
Total	$ 4,463,596	4,125,525
Allowance for Credit Losses for Loans Collectively Evaluated		37,321
Allowance for Credit Losses for Loans Individually Evaluated		199
Total	56,063	37,520	$ 35,578	$ 34,203
Loans at fair value	17,589	17,670
Real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total	2,552,014	2,486,420
Total		20,056
Real estate | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		1,271,731
Loan Balance Individually Evaluated		7,446
Total	1,284,931	1,279,177
Allowance for Credit Losses for Loans Collectively Evaluated		10,010
Allowance for Credit Losses for Loans Individually Evaluated		3
Total	9,254	10,013	9,258	8,999
Loans at fair value	17,600	17,700
Real estate | Construction/land/land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		513,359
Loan Balance Individually Evaluated		4,329
Total	563,820	517,688
Allowance for Credit Losses for Loans Collectively Evaluated		3,708
Allowance for Credit Losses for Loans Individually Evaluated		3
Total	5,054	3,711	3,679	3,331
Real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		684,618
Loan Balance Individually Evaluated		4,937
Total	703,263	689,555
Allowance for Credit Losses for Loans Collectively Evaluated		6,311
Allowance for Credit Losses for Loans Individually Evaluated		21
Total	4,495	6,332	5,577	5,705
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		1,327,813
Loan Balance Individually Evaluated		15,662
Total	1,455,497	1,343,475
Allowance for Credit Losses for Loans Collectively Evaluated		16,792
Allowance for Credit Losses for Loans Individually Evaluated		168
Total	35,823	16,960	16,475	15,616
Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		274,659
Loan Balance Individually Evaluated		0
Total	437,257	274,659
Allowance for Credit Losses for Loans Collectively Evaluated		262
Allowance for Credit Losses for Loans Individually Evaluated		0
Total	779	262	365	316
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated		20,871
Loan Balance Individually Evaluated		100
Total	18,828	20,971
Allowance for Credit Losses for Loans Collectively Evaluated		238
Allowance for Credit Losses for Loans Individually Evaluated		4
Total	658	$ 242	$ 224	$ 236
Probability of Default
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	4,429,784
Allowance for Credit Losses for Loans Collectively Evaluated	49,910
Probability of Default | Real estate | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	1,273,101
Allowance for Credit Losses for Loans Collectively Evaluated	6,290
Probability of Default | Real estate | Construction/land/land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	560,042
Allowance for Credit Losses for Loans Collectively Evaluated	5,053
Probability of Default | Real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	699,859
Allowance for Credit Losses for Loans Collectively Evaluated	4,495
Probability of Default | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	1,440,724
Allowance for Credit Losses for Loans Collectively Evaluated	32,644
Probability of Default | Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	437,257
Allowance for Credit Losses for Loans Collectively Evaluated	779
Probability of Default | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Collectively Evaluated	18,801
Allowance for Credit Losses for Loans Collectively Evaluated	649
Fair Value of Collateral
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	25,649
Allowance for Credit Losses for Loans Individually Evaluated	6,125
Fair Value of Collateral | Real estate | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	11,059
Allowance for Credit Losses for Loans Individually Evaluated	2,964
Fair Value of Collateral | Real estate | Construction/land/land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	3,405
Allowance for Credit Losses for Loans Individually Evaluated	0
Fair Value of Collateral | Real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	2,660
Allowance for Credit Losses for Loans Individually Evaluated	0
Fair Value of Collateral | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	8,498
Allowance for Credit Losses for Loans Individually Evaluated	3,152
Fair Value of Collateral | Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	0
Allowance for Credit Losses for Loans Individually Evaluated	0
Fair Value of Collateral | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	27
Allowance for Credit Losses for Loans Individually Evaluated	9
Discounted Cash Flow
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	8,163
Allowance for Credit Losses for Loans Individually Evaluated	28
Discounted Cash Flow | Real estate | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	771
Allowance for Credit Losses for Loans Individually Evaluated	0
Discounted Cash Flow | Real estate | Construction/land/land development
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	373
Allowance for Credit Losses for Loans Individually Evaluated	1
Discounted Cash Flow | Real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	744
Allowance for Credit Losses for Loans Individually Evaluated	0
Discounted Cash Flow | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	6,275
Allowance for Credit Losses for Loans Individually Evaluated	27
Discounted Cash Flow | Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	0
Allowance for Credit Losses for Loans Individually Evaluated	0
Discounted Cash Flow | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Loan Balance Individually Evaluated	0
Allowance for Credit Losses for Loans Individually Evaluated	$ 0

Loans - Loans Receivable by Met

Loans - Loans Receivable by Method of Impairment Evaluation (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment		$ 199
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		37,321
Period End Loan Balance Individually Evaluated for Impairment		32,474
Period End Loan Balance Collectively Evaluated for Impairment		4,093,051
Loans at fair value	$ 17,589	17,670
Real estate | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment		3
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		10,010
Period End Loan Balance Individually Evaluated for Impairment		7,446
Period End Loan Balance Collectively Evaluated for Impairment		1,271,731
Loans at fair value	$ 17,600	17,700
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
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		3,708
Period End Loan Balance Individually Evaluated for Impairment		4,329
Period End Loan Balance Collectively Evaluated for Impairment		513,359
Real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment		21
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		6,311
Period End Loan Balance Individually Evaluated for Impairment		4,937
Period End Loan Balance Collectively Evaluated for Impairment		684,618
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment		168
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		16,792
Period End Loan Balance Individually Evaluated for Impairment		15,662
Period End Loan Balance Collectively Evaluated for Impairment		1,327,813
Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment		0
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		262
Period End Loan Balance Individually Evaluated for Impairment		0
Period End Loan Balance Collectively Evaluated for Impairment		274,659
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Period End Allowance Allocated to Loans Individually Evaluated for Impairment		4
Period End Allowance Allocated to Loans Collectively Evaluated for Impairment		238
Period End Loan Balance Individually Evaluated for Impairment		100
Period End Loan Balance Collectively Evaluated for Impairment		$ 20,871

Loans - Impaired Loans (Details

Loans - Impaired Loans (Details) $ in Thousands	Dec. 31, 2019USD ($)
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	$ 44,293
Recorded Investment with no Allowance	30,423
Recorded Investment with an Allowance	2,051
Total Recorded Investment	32,474
Allocation of Allowance for Loan Losses	199
Real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	21,326
Recorded Investment with no Allowance	16,038
Recorded Investment with an Allowance	674
Total Recorded Investment	16,712
Allocation of Allowance for Loan Losses	27
Real estate | Commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	10,788
Recorded Investment with no Allowance	7,375
Recorded Investment with an Allowance	71
Total Recorded Investment	7,446
Allocation of Allowance for Loan Losses	3
Real estate | Construction/land/land development
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	4,692
Recorded Investment with no Allowance	4,256
Recorded Investment with an Allowance	73
Total Recorded Investment	4,329
Allocation of Allowance for Loan Losses	3
Real estate | Residential real estate
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	5,846
Recorded Investment with no Allowance	4,407
Recorded Investment with an Allowance	530
Total Recorded Investment	4,937
Allocation of Allowance for Loan Losses	21
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	22,857
Recorded Investment with no Allowance	14,385
Recorded Investment with an Allowance	1,277
Total Recorded Investment	15,662
Allocation of Allowance for Loan Losses	168
Consumer
Financing Receivable, Impaired [Line Items]
Unpaid Contractual Principal Balance	110
Recorded Investment with no Allowance	0
Recorded Investment with an Allowance	100
Total Recorded Investment	100
Allocation of Allowance for Loan Losses	$ 4

Loans - Non Performing (Nonaccr

Loans - Non Performing (Nonaccrual) Loans Held For Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	$ 9,737
Nonaccrual	33,032	$ 31,146
Real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	8,973
Nonaccrual	19,232	16,463
Real estate | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	2,164
Nonaccrual	11,306	6,994
Real estate | Construction/land/land development
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	3,661
Nonaccrual	3,850	4,337
Real estate | Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	3,148
Nonaccrual	4,076	5,132
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	746
Nonaccrual	13,619	14,520
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Nonaccrual With No Allowance for Credit Loss	18
Nonaccrual	$ 181	$ 163

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans classified as troubled debt restructurings	$ 7,919	$ 8,452
Nonaccrual TDRs
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans classified as troubled debt restructurings	6,034	6,609
Performing TDRs
Financing Receivable, Troubled Debt Restructuring [Line Items]
Loans classified as troubled debt restructurings	$ 1,885	$ 1,843

Loans - Pre-Modification Balanc

Loans - Pre-Modification Balances of TDR (Details) - Nonperforming Financial Instruments $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)loan	Mar. 31, 2019USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan	2	2
Pre-modification Recorded Balance	$ 128	$ 380
Total Modifications	$ 127	$ 378
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		$ 360
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans Restructured | loan	2	1
Pre-modification Recorded Balance	$ 128	$ 19
Total Modifications	127	18
Term Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	127	18
Term Concessions | Real estate | Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		0
Term Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	127	18
Interest Rate Concessions
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 | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0
Combination of Term and Rate Concessions
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications	0	360
Combination of Term and Rate Concessions | Real estate | Construction/land/land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		360
Combination of Term and Rate Concessions | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total Modifications		$ 0

Fair Value of Financial Instr_3

Fair Value of Financial Instruments - Fair Value of Assets and Liabilities Recorded on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 601,637	$ 501,070
Securities carried at fair value through income	12,242	11,513
Loans held for sale	46,348	36,977
Loans at fair value	17,589	17,670
Mortgage servicing rights	16,122	20,697	$ 23,407	$ 25,114
State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	167,962	99,184
Securities carried at fair value through income	12,242	11,513
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	19,459	16,817
U.S. Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	4,765	5,238
Commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	12,159	12,144
Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	229,719	207,506
Commercial collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	12,479	4,394
Residential collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	155,094	155,787
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	601,637	501,070
Securities carried at fair value through income	12,242	11,513
Loans held for sale	46,348	36,977
Loans at fair value	17,589	17,670
Mortgage servicing rights	16,122	20,697
Other assets - derivatives	28,052	9,384
Total recurring fair value measurements - assets	721,990	597,311
Other liabilities - derivatives	(28,377)	(9,488)
Total recurring fair value measurements - liabilities	(28,377)	(9,488)
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
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	0
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]
Securities available for sale	565,212	462,897
Securities carried at fair value through income	0	0
Loans held for sale	46,348	36,977
Loans at fair value	0	0
Mortgage servicing rights	0	0
Other assets - derivatives	28,052	9,384
Total recurring fair value measurements - assets	639,612	509,258
Other liabilities - derivatives	(28,377)	(9,488)
Total recurring fair value measurements - liabilities	(28,377)	(9,488)
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	36,425	38,173
Securities carried at fair value through income	12,242	11,513
Loans held for sale	0	0
Loans at fair value	17,589	17,670
Mortgage servicing rights	16,122	20,697
Other assets - derivatives	0	0
Total recurring fair value measurements - assets	82,378	88,053
Other liabilities - derivatives	0	0
Total recurring fair value measurements - liabilities	0	0
Fair Value, Measurements, Recurring | State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	167,962	99,184
Fair Value, Measurements, Recurring | State and municipal securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | State and municipal securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	131,537	61,011
Fair Value, Measurements, Recurring | State and municipal securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	36,425	38,173
Fair Value, Measurements, Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	19,459	16,817
Fair Value, Measurements, Recurring | Corporate bonds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Corporate bonds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	19,459	16,817
Fair Value, Measurements, Recurring | Corporate bonds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	4,765	5,238
Fair Value, Measurements, Recurring | U.S. Government and agency securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | U.S. Government and agency securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	4,765	5,238
Fair Value, Measurements, Recurring | U.S. Government and agency securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	12,159	12,144
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	12,159	12,144
Fair Value, Measurements, Recurring | Commercial mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	229,719	207,506
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	229,719	207,506
Fair Value, Measurements, Recurring | Residential mortgage-backed securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Commercial collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	12,479	4,394
Fair Value, Measurements, Recurring | Commercial collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Commercial collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	12,479	4,394
Fair Value, Measurements, Recurring | Commercial collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Residential collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	155,094	155,787
Fair Value, Measurements, Recurring | Residential collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Fair Value, Measurements, Recurring | Residential collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	155,094	155,787
Fair Value, Measurements, Recurring | Residential collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 0	$ 0

Fair Value of Financial Instr_4

Fair Value of Financial Instruments - Changes in Level 3 Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Loans at Fair Value
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	$ 17,670	$ 18,571
Gain (loss) recognized in accumulated other comprehensive income	0	0
Purchases, issuances, sales and settlements:
Originations	0	0
Purchases	0	0
Sales	0
Settlements	(247)	(256)
Balance at end of period	17,589	18,387
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	166	72
MSRs
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	20,697	25,114
Gain (loss) recognized in accumulated other comprehensive income	0	0
Purchases, issuances, sales and settlements:
Originations	653	283
Purchases	0	0
Settlements	0	0
Balance at end of period	16,122	23,407
MSRs | Mortgage banking revenue
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	(5,228)	(1,990)
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	38,173	39,361
Gain (loss) recognized in accumulated other comprehensive income	160	694
Purchases, issuances, sales and settlements:
Originations	0	0
Purchases	0	0
Sales	(1,908)
Settlements	0	(1,748)
Balance at end of period	36,425	38,307
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	11,513	11,361
Gain (loss) recognized in accumulated other comprehensive income	0	0
Purchases, issuances, sales and settlements:
Originations	0	0
Purchases	0	0
Sales	0
Settlements	0	0
Balance at end of period	12,242	11,510
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	$ 729	$ 149

Fair Value of Financial Instr_5

Fair Value of Financial Instruments - Assumptions Used to Value Mortgage Servicing Rights (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Servicing Assets at Fair Value [Line Items]
Prepayment speeds		12.46%
Discount rates		9.55%
Minimum
Servicing Assets at Fair Value [Line Items]
Prepayment speeds	10.01%
Discount rates	8.73%
Maximum
Servicing Assets at Fair Value [Line Items]
Prepayment speeds	27.33%
Discount rates	9.98%
Weighted Average
Servicing Assets at Fair Value [Line Items]
Prepayment speeds	16.06%
Discount rates	9.20%

Fair Value of Financial Instr_6

Fair Value of Financial Instruments - Difference Between Fair Value and Unpaid Principal Balance (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 76,179,000	$ 66,160,000
Aggregate Unpaid Principal Balance	72,552,000	64,473,000
Difference	3,627,000	1,687,000
Nonaccrual mortgage loans held for sale recorded at fair value	840,000	927,000
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	46,348,000	36,977,000
Aggregate Unpaid Principal Balance	44,362,000	36,037,000
Difference	1,986,000	940,000
Commercial real estate LHFI
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	17,589,000	17,670,000
Aggregate Unpaid Principal Balance	17,120,000	17,366,000
Difference	469,000	304,000
Securities carried at fair value through income
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	12,242,000	11,513,000
Aggregate Unpaid Principal Balance	11,070,000	11,070,000
Difference	1,172,000	443,000
US Government Agencies Debt Securities
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, 90 days or more past due	$ 576,000	$ 709,000

Fair Value of Financial Instr_7

Fair Value of Financial Instruments - Changes in Fair Value of Assets Classified in the Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Mortgage banking revenue
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	$ 1,046	$ 37
Other income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	895	221
Noninterest income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	1,941	258
Loans at fair value held for investment | Other income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	166	72
Securities carried at fair value through income | Other income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	$ 729	$ 149

Fair Value of Financial Instr_8

Fair Value of Financial Instruments - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities without readily determinable fair value	$ 52,267,000	$ 39,808,000
Impairment recorded on investments in equity securities that do not have readily determinable fair values	0
Liability to repurchase past due GNMA loans	29,000,000	27,900,000
Fair value of impaired loans		32,474,000
Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans		16,712,000
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	16,200,000	1,900,000
Foreclosed assets	5,200,000	$ 4,700,000
Residential real estate | Fair Value, Measurements, Nonrecurring | 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	$ 296,000
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%	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%	2.27%
Credit spread, loans held-for-investment	4.13%	4.13%

Fair Value of Financial Instr_9

Fair Value of Financial Instruments - Carrying Value and Estimated Fair Values of Financial Instruments Not Measured at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	$ 29,400	$ 29,523
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Subordinated debentures	78,539
Carrying Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	560,179	291,518
Carrying Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-marketable equity securities held in other financial institutions	52,267	39,808
Accrued interest and loan fees receivable	16,881	16,430
Deposits	4,556,246	4,228,612
FHLB advances and other borrowings	716,909	417,190
Subordinated debentures		9,671
Accrued interest payable	3,062	2,822
Carrying Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	28,383	28,620
LHFI, net	4,407,533	4,088,005
Estimated Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	560,179	291,518
Estimated Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Non-marketable equity securities held in other financial institutions	52,267	39,808
Accrued interest and loan fees receivable	16,881	16,430
Deposits	4,564,487	4,081,430
FHLB advances and other borrowings	701,555	425,318
Subordinated debentures	76,521	10,717
Accrued interest payable	3,062	2,822
Estimated Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	29,400	29,523
LHFI, net	$ 4,418,284	$ 3,940,347

Goodwill and Other Intangible_2

Goodwill and Other Intangible Assets (Details)	1 Months Ended
	Mar. 31, 2020USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of goodwill and other intangible assets	$ 0

Mortgage Banking - Mortgage Ban

Mortgage Banking - Mortgage Banking Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Mortgage Banking [Abstract]
Origination	$ 275	$ 130
Gain on sale of loans held for sale	1,873	1,097
Servicing	1,601	1,699
Total gross mortgage revenue	3,749	2,926
MSR valuation adjustment, net of amortization	(5,228)	(1,990)
MSR hedge impact	1,266	210
MSR hedge impact	2,982	1,460
Mortgage banking revenue	$ 2,769	$ 2,606

Mortgage Banking - Activity in

Mortgage Banking - Activity in Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 20,697	$ 25,114
Addition of servicing rights	653	283
Valuation adjustment, net of amortization	(5,228)	(1,990)
Balance at end of period	$ 16,122	$ 23,407

Mortgage Banking - Narrative (D

Mortgage Banking - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Mortgage Banking [Abstract]
Annual servicing fee income rate	0.28%
Mortgage loan servicing putback expenses	$ 2,000	$ 0
Reserve for mortgage loan servicing putback expenses	231,000		$ 229,000
Liability to repurchase past due GNMA loans	$ 29,000,000		$ 27,900,000

Borrowings - Summary of Borrowe

Borrowings - Summary of Borrowed Funds (Details) - USD ($)	Mar. 31, 2020	Feb. 29, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	$ 716,909,000		$ 417,190,000
FHLB Advance, Maturities of 15 Years
Debt Instrument [Line Items]
Advance			$ 250,000,000
FHLB Advances One
Debt Instrument [Line Items]
Fixed interest rate			1.65%
GNMA repurchase liability
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	28,975,000		$ 27,860,000
Long-term FHLB advances
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	272,401,000		272,613,000
Junior subordinated debentures, net
Debt Instrument [Line Items]
Junior subordinated debentures, net	78,539,000		9,671,000
Advance		$ 70,000,000
Fixed interest rate		4.25%
Overnight repurchase agreements with depositors
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	15,533,000		16,717,000
Long-term FHLB advances
Debt Instrument [Line Items]
Total FHLB advances and other borrowings	400,000,000		100,000,000
FHLB advances maturing June 23, 2020
Debt Instrument [Line Items]
Advance	$ 50,000,000
Fixed interest rate	0.45%
FHLB advances maturing June 25, 2020
Debt Instrument [Line Items]
Advance	$ 300,000,000
Fixed interest rate	0.30%
FHLB advances maturing September 21, 2020
Debt Instrument [Line Items]
Advance	$ 30,000,000
Fixed interest rate	0.58%
FHLB advances maturing June Through December 2020
Debt Instrument [Line Items]
Advance	$ 20,000,000
Fixed interest rate	0.65%
FHLB advances maturing January 2, 2020
Debt Instrument [Line Items]
Advance			$ 100,000,000
Fixed interest rate			1.35%

Borrowings - Narrative (Details

Borrowings - Narrative (Details)	1 Months Ended
	Feb. 29, 2020USD ($)	Mar. 31, 2020USD ($)trust	Dec. 31, 2019USD ($)
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		$ 140,200,000	$ 601,900,000
Junior subordinated debentures, net
Debt Instrument [Line Items]
Fixed interest rate	4.25%
Principal amount	$ 70,000,000
Remaining purchase discount		$ 1,100,000	$ 1,200,000
Junior subordinated debentures, net | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.82%

Borrowings - Summary of Terms o

Borrowings - Summary of Terms of Current Debentures (Details) - Junior subordinated debentures, net - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Feb. 29, 2020	Dec. 31, 2019	Mar. 31, 2020
Debt Instrument [Line Items]
Amount Outstanding			$ 10,826
Maximum Rate	4.25%
LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate	2.82%
CTB Statutory Trust I
Debt Instrument [Line Items]
Amount Outstanding			$ 6,702
Current Rate			5.08%
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 Instrume_3

Derivative Financial Instruments - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash collateral on deposit	$ 27.7	$ 15.3

Derivative Financial Instrume_4

Derivative Financial Instruments - Fair Value of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Notional Amounts	$ 987,469	$ 762,012
Fair Values	478	(3)
Not Designated as Hedging Instrument | Interest Rate Swap | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	266,081	217,633
Fair Values	23,463	8,425
Not Designated as Hedging Instrument | Interest Rate Swap | Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Amounts	294,600	246,397
Fair Values	(25,001)	(9,278)
Not Designated as Hedging Instrument | Forward Commitment to Purchase | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	155,000	200,000
Fair Values	1,188	242
Not Designated as Hedging Instrument | Forward Commitment to Sell | Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Amounts	126,700	60,600
Fair Values	(2,573)	(109)
Not Designated as Hedging Instrument | Interest Rate Lock Commitments | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	145,088	37,382
Fair Values	3,401	717
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amounts	21,000	10,500
Fair Values	$ (803)	$ (101)

Derivative Financial Instrume_5

Derivative Financial Instruments - Weighted-Average Interest Rates Paid and Received (Details) - Interest Rate Swap	Mar. 31, 2020
Designated as Hedging Instrument | Interest Rate Paid
Derivative [Line Items]
Weighted-average rates	4.81%
Designated as Hedging Instrument | Interest Rate Received
Derivative [Line Items]
Weighted-average rates	4.11%
Not Designated as Hedging Instrument | Interest Rate Paid | Financial Institution
Derivative [Line Items]
Weighted-average rates	4.93%
Not Designated as Hedging Instrument | Interest Rate Paid | Customer
Derivative [Line Items]
Weighted-average rates	3.52%
Not Designated as Hedging Instrument | Interest Rate Received | Financial Institution
Derivative [Line Items]
Weighted-average rates	3.45%
Not Designated as Hedging Instrument | Interest Rate Received | Customer
Derivative [Line Items]
Weighted-average rates	4.93%

Derivative Financial Instrume_6

Derivative Financial Instruments - Gains and Losses Recognized on Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Mortgage banking revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives not designated as hedging instruments	$ 2,513	$ 1,311
Noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives not designated as hedging instruments	$ (685)	$ (225)

Stock and Incentive Compensat_3

Stock and Incentive Compensation Plans - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)shares
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]
Unrecognized compensation cost | $	$ 3.5
Unrecognized compensation cost weighted average period for recognition	2 years 5 months 4 days
2012 Plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Maximum number of common stock available for issuance (in shares) | shares	951,612
Minimum
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Vesting period from the date of grant or merger	0 years
Minimum | Restricted Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Service period	1 year
Maximum
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Vesting period from the date of grant or merger	10 years
Maximum | Restricted Stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Service period	5 years

Stock and Incentive Compensat_4

Stock and Incentive Compensation Plans - Share-based Compensation Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Payment Arrangement [Abstract]
Restricted stock	$ 537	$ 470
Related tax benefits recognized in net income	$ 113	$ 99

Stock and Incentive Compensat_5

Stock and Incentive Compensation Plans - Time-vested Award Activity (Details) - Restricted Stock - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Shares
Nonvested shares, beginning balance (in shares)	149,449	174,407
Granted (in shares)	0	976
Vested (in shares)	(2,073)	(3,568)
Forfeited (in shares)	(4,129)	(1,550)
Nonvested shares, ending balance (in shares)	143,247	170,265
Weighted Average Grant-Date Fair Value
Nonvested shares, ending balance ($ per share)	$ 35.15	$ 35.01
Granted ($ per share)	0	35.91
Vested ($ per share)	25.81	25.25
Forfeited ($ per share)	37.14	23.64
Nonvested shares, beginning balance ($ per share)	$ 35.23	$ 35.32

Stock and Incentive Compensat_6

Stock and Incentive Compensation Plans - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Number of Shares
Outstanding, beginning of period (in shares)	254,000	274,000	274,000
Exercised (in shares)	(30,000)	(20,000)
Outstanding, end of period (in shares)	224,000	254,000	254,000	274,000
Exercisable (in shares)	224,000	254,000
Weighted Average Exercise Price
Outstanding, beginning of period ($ per share)	$ 10.55	$ 10.38	$ 10.38
Exercised ($ per share)	8.25	8.25
Outstanding, end of period ($ per share)	10.86	10.55	$ 10.55	$ 10.38
Exercisable ($ per share)	$ 10.86	$ 10.55
Weighted average remaining contractual term (in years)	5 years 8 months 1 day	6 years 6 months 21 days	5 years 9 months 21 days	6 years 9 months
Exercisable, weighted average remaining contractual term (in years)	5 years 8 months	6 years 6 months 21 days
Aggregate intrinsic value	$ 2,104	$ 5,969	$ 6,932	$ 6,493
Exercisable, aggregate intrinsic value	$ 1,858	$ 5,969

Income Taxes - Provision for In

Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Federal income taxes:
Current	$ 3,376	$ 3,167
Deferred	(3,995)	(336)
State income taxes:
Current	319	268
Deferred	(127)	(10)
Income tax (benefit) expense	$ (427)	$ 3,089
Effective income tax rate	(130.98%)	17.91%

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Tax Expense (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Income taxes computed at statutory rate	21.00%	21.00%
Tax exempt revenue, net of nondeductible interest	(45.46%)	(0.98%)
Low-income housing tax credits, net of amortization	(38.15%)	(0.75%)
Other tax credits, net of add-backs	(93.08%)	(1.74%)
Bank-owned life insurance income	(35.69%)	(0.22%)
State income taxes, net of federal benefit	41.57%	1.16%
Stock-based compensation	(7.79%)	(0.62%)
Nondeductible expenses and other	26.62%	0.06%
Total income tax expense	(130.98%)	17.91%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	$ 599,262	$ 549,779
Net change	9,489	4,004
Stockholders' equity, ending balance	606,631	568,122
Unrealized (Losses) Gains on AFS Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	6,412	(2,601)
Net change	10,044	4,078
Stockholders' equity, ending balance	16,456	1,477
Unrealized Gains (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	(79)	121
Net change	(555)	(74)
Stockholders' equity, ending balance	(634)	47
Accumulated Other Comprehensive Income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	6,333	(2,480)
Net change	9,489	4,004
Stockholders' equity, ending balance	$ 15,822	$ 1,524

Capital and Regulatory Matter_2

Capital and Regulatory Matters (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Origin Bancorp, Inc.
Common Equity Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 565,017	$ 561,630
Actual, ratio	10.86%	11.74%
Minimum capital required, amount	$ 364,191	$ 334,785
Minimum capital required, ratio	7.00%	7.00%
Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 574,370	$ 570,975
Actual, ratio	11.04%	11.94%
Minimum capital required, amount	$ 442,223	$ 406,524
Minimum capital required, ratio	8.50%	8.50%
Total Capital to Risk-Weighted Assets
Actual, amount	$ 695,633	$ 610,305
Actual, ratio	13.38%	12.76%
Minimum capital required, amount	$ 545,900	$ 502,175
Minimum capital required, ratio	10.50%	10.50%
Leverage Ratio
Actual, amount	$ 574,370	$ 570,975
Actual, ratio	10.71%	10.91%
Minimum capital required, amount	$ 214,517	$ 209,298
Minimum capital required, ratio	4.00%	4.00%
Origin Bank | Origin Bank
Common Equity Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 554,119	$ 551,060
Actual, ratio	10.68%	11.55%
Minimum capital required, amount	$ 363,187	$ 333,924
Minimum capital required, ratio	7.00%	7.00%
Well capitalized, amount	$ 337,245	$ 310,072
Well capitalized, ratio	6.50%	6.50%
Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 554,119	$ 551,060
Actual, ratio	10.68%	11.55%
Minimum capital required, amount	$ 441,012	$ 405,479
Minimum capital required, ratio	8.50%	8.50%
Well capitalized, amount	$ 415,070	$ 381,627
Well capitalized, ratio	8.00%	8.00%
Total Capital to Risk-Weighted Assets
Actual, amount	$ 675,382	$ 590,390
Actual, ratio	13.02%	12.38%
Minimum capital required, amount	$ 544,663	$ 500,888
Minimum capital required, ratio	10.50%	10.50%
Well capitalized, amount	$ 518,727	$ 477,037
Well capitalized, ratio	10.00%	10.00%
Leverage Ratio
Actual, amount	$ 554,119	$ 551,060
Actual, ratio	10.36%	10.56%
Minimum capital required, amount	$ 213,946	$ 208,774
Minimum capital required, ratio	4.00%	4.00%
Well capitalized, amount	$ 267,432	$ 260,968
Well capitalized, ratio	5.00%	5.00%
Aggregate dividends without prior regulatory approval	$ 37,700

Commitments and Contingencies -

Commitments and Contingencies - Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instrument	$ 1,355,644	$ 1,374,055
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instrument	$ 49,118	$ 39,344

Commitments and Contingencies_2

Commitments and Contingencies - Narrative (Details)	Mar. 31, 2020USD ($)instrument	Dec. 31, 2019USD ($)instrument
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Credit card guarantees	$ 399,000	$ 489,000
Lending-related Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Reserve for lending related commitments	$ 1,600,000	$ 1,800,000
Letter of Credit | FHLB
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Number of unfunded letters of credit held | instrument	28	21
Line of credit, maximum borrowing capacity	$ 424,900,000	$ 241,300,000

Uncategorized Items - a03312020

Label	Element	Value
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ 321,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (760,000)
Federal Home Loan Bank Advances, Maturing August 23, 2033 [Member]
Debt Instrument, Interest Rate, Stated Percentage	us-gaap_DebtInstrumentInterestRateStatedPercentage	1.65%
Debt Instrument, Interest Rate, Stated Percentage	us-gaap_DebtInstrumentInterestRateStatedPercentage	1.65%
Debt Instrument, Face Amount	us-gaap_DebtInstrumentFaceAmount	$ 250,000,000
Debt Instrument, Face Amount	us-gaap_DebtInstrumentFaceAmount	250,000,000
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	321,000
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (760,000)