Origin Bancorp (OBK) 10-Q/A 18 Jun 18 2018 Q1 Quarterly report (amended) Financial data

Document and Entity Information

Document and Entity Information Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 29, 2018
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Trading Symbol	OBNK
Entity Registrant Name	ORIGIN BANCORP, INC.
Entity CIK	1,516,912
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		22,570,508

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Assets
Cash and due from banks	$ 52,989	$ 78,489
Interest-bearing deposits in banks	194,268	108,698
Total cash and cash equivalents	247,257	187,187
Available for sale	414,157	404,532
Securities:
Held to maturity (fair value: March 31, 2018 - $19,858, December 31, 2017 - $20,265)	19,860	20,188
Securities carried at fair value through income	11,723	12,033
Total securities	445,740	436,753
Non-marketable equity securities held in other financial institutions	22,995	22,967
Loans held for sale ($19,301 and $32,768 at fair value, respectively)	48,988	65,343
Loans, net of allowance for loan losses of $34,132 and $37,083, respectively ($25,934 and $26,611 at fair value, respectively)	3,211,860	3,203,948
Premises and equipment, net	76,648	77,408
Mortgage servicing rights	25,999	24,182
Cash surrender value of bank-owned life insurance	28,185	27,993
Goodwill and other intangible assets, net	24,219	24,336
Other Assets	83,008	83,878
Total assets	4,214,899	4,153,995
Liabilities and Stockholders' Equity
Noninterest-bearing deposits	885,883	832,853
Interest-bearing deposits	2,071,626	2,060,068
Time deposits	623,229	619,093
Total deposits	3,580,738	3,512,014
FHLB advances and other borrowings	132,224	144,357
Junior subordinated debentures	9,625	9,619
Accrued expenses and other liabilities	29,488	32,663
Total liabilities	3,752,075	3,698,653
Commitments and contingencies	34,991	34,991
Stockholders' equity:
Common stock ($5 par value; authorized 50,000,000 shares; issued 19,525,241 and 19,518,752 shares, respectively)	97,626	97,594
Additional paid‑in capital	146,201	146,061
Retained earnings	156,498	145,122
Accumulated other comprehensive income (loss)	(2,759)	1,307
Stockholders' equity, before ESOP-owned shares	462,824	455,342
Less: ESOP-owned shares	34,991	34,991
Total stockholders' equity	427,833	420,351
Total liabilities and stockholders' equity	4,214,899	4,153,995
Preferred Stock Series SBLF
Stockholders' equity:
Preferred stock	48,260	48,260
Preferred Stock Series D
Stockholders' equity:
Preferred stock	$ 16,998	$ 16,998

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Securities held to maturity, fair value	$ 19,858	$ 20,265
Loans held for sale	19,301	32,768
Less: Allowance for loan losses	34,132	37,083
Loans at fair value	$ 25,934	$ 26,611
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)	19,525,241	19,518,752
Preferred Stock Series SBLF
Preferred stock, shares authorized (in shares)	48,260	48,260
Preferred stock, shares issued (in shares)	48,260	48,260
Preferred Stock Series D
Preferred stock, shares authorized (in shares)	950,000	950,000
Preferred stock, shares issued (in shares)	901,644	901,644

Consolidated Statements of Inco

Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Interest and dividend income
Interest and fees on loans	$ 37,474	$ 31,968
Investment securities-taxable	1,740	1,448
Investment securities-nontaxable	1,184	1,200
Interest and dividend income on assets held in other financial institutions	1,046	662
Total interest and dividend income	41,444	35,278
Interest expense
Interest-bearing deposits	5,980	4,236
FHLB advances and other borrowings	604	605
Subordinated debentures	136	135
Total interest expense	6,720	4,976
Net interest income	34,724	30,302
(Benefit) provision for credit losses	(1,524)	2,814
Net interest income after (benefit) provision for credit losses	36,248	27,488
Noninterest income
Service charges and fees	3,014	2,772
Mortgage banking revenue	2,394	4,092
Insurance commission and fee income	2,107	1,924
Loss on sales and disposals of other assets, net	(61)	(129)
Other fee income	452	679
Other income	1,894	787
Total noninterest income	9,800	10,125
Noninterest expense
Salaries and employee benefits	18,241	16,587
Occupancy and equipment, net	3,653	3,944
Data processing	1,473	1,273
Electronic banking	743	639
Communications	515	433
Advertising and marketing	657	589
Professional services	665	609
Regulatory assessments	720	681
Loan related expenses	713	785
Office and operations	1,278	1,276
Other expenses	1,199	970
Total noninterest expense	29,857	27,786
Income before income tax expense	16,191	9,827
Income tax expense	2,784	2,580
Net income	13,407	7,247
Preferred stock dividends	1,115	1,115
Net income allocated to participating stockholders	553	267
Net income available to common stockholders	$ 11,739	$ 5,865
Basic earnings per common share ($ per share)	$ 0.60	$ 0.30
Diluted earnings per common share ($ per share)	$ 0.60	$ 0.30

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 13,407	$ 7,247
Securities available for sale and transferred securities:
Net unrealized holding gains (losses) arising during the period	(5,683)	429
Net losses realized as a yield adjustment in interest on investment securities	(3)	(2)
Change in the net unrealized gain (loss) on investment securities, before tax	(5,686)	427
Income tax expense (benefit) related to net unrealized gains (losses) arising during the period	(1,194)	149
Change in the net unrealized gain (loss) on investment securities, net of tax	(4,492)	278
Cash flow hedges:
Net unrealized gains arising during the period	165	2
Reclassification adjustment for losses included in net income	17	31
Change in the net unrealized gain on cash flow hedges, before tax	182	33
Income tax expense related to net unrealized gains on cash flow hedges	38	12
Change in the net unrealized gain on cash flow hedges, net of tax	144	21
Other comprehensive income (loss), net of tax	(4,348)	299
Comprehensive income	$ 9,059	$ 7,546

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock Series D	Preferred Stock Series SBLF	Common Stock	Preferred StockPreferred Stock Series D	Preferred StockPreferred Stock Series SBLF	Additional Paid-In Capital	Retained Earnings	Retained EarningsPreferred Stock Series D	Retained EarningsPreferred Stock Series SBLF	Accumulated Other Comprehensive Income (loss)	Less: ESOP-Owned Shares
Common shares outstanding, beginning balance at Dec. 31, 2016				19,483,718
Stockholders' equity, beginning balance at Dec. 31, 2016	$ 420,093			$ 97,419	$ 16,998	$ 48,260	$ 145,068	$ 137,449			$ 3,463	$ (28,564)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	7,247							7,247
Other comprehensive income (loss), net of tax	299										299
Recognition of stock compensation, net (in shares)				(5,200)
Recognition of stock compensation, net	155			$ (26)			181
Net change in fair value of ESOP shares	28											28
Dividends declared - preferred stock		$ (29)	$ (1,086)						$ (29)	$ (1,086)
Dividends declared - common stock	(633)							(633)
Common shares outstanding, ending balance at Mar. 31, 2017				19,478,518
Stockholders' equity, ending balance at Mar. 31, 2017	426,074			$ 97,393	16,998	48,260	145,249	142,948			3,762	(28,536)
Common shares outstanding, beginning balance at Dec. 31, 2017				19,518,752
Stockholders' equity, beginning balance at Dec. 31, 2017	420,351			$ 97,594	16,998	48,260	146,061	145,122			1,307	(34,991)
Reclassification of tax effects related to the adoption of ASU 2018-02 at Dec. 31, 2017	0							(282)			282
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	13,407							13,407
Other comprehensive income (loss), net of tax	(4,348)										(4,348)
Recognition of stock compensation, net (in shares)				6,489
Recognition of stock compensation, net	172			$ 32			140
Dividends declared - preferred stock		$ (29)	$ (1,086)						$ (29)	$ (1,086)
Dividends declared - common stock	(634)							(634)
Common shares outstanding, ending balance at Mar. 31, 2018				19,525,241
Stockholders' equity, ending balance at Mar. 31, 2018	$ 427,833			$ 97,626	$ 16,998	$ 48,260	$ 146,201	$ 156,498			$ (2,759)	$ (34,991)

Consolidated Statements of Cha7

Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Statement of Stockholders' Equity [Abstract]
Common stock dividends declared ($ per share)	$ 0.0325	$ 0.0325

Statement of Cash Flows

Statement of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 13,407	$ 7,247
Adjustments to reconcile net income to net cash provided by operating activities:
(Benefit) provision for credit losses	(1,524)	2,814
Depreciation and amortization	1,342	1,515
Net amortization on securities	353	360
Amortization of investments in tax credit funds	488	516
Deferred income tax expense	533	37
Stock-based compensation expense	194	217
Originations of mortgage loans held for sale	(74,938)	(102,723)
Proceeds from mortgage loans held for sale	84,528	114,563
Originations of mortgage servicing rights	(543)	(628)
Net loss on disposals of premises and equipment	26	17
Increase in the cash surrender value of life insurance	(192)	(168)
Write downs and net losses on sales of other real estate owned	35	112
Net increase in accrued interest and other assets	2,179	3,969
Net increase (decrease) in accrued expenses and other liabilities	(6,098)	9,545
Other operating activities, net	6,611	1,309
Net cash provided by operating activities	26,401	38,702
Cash flows from investing activities:
Purchases of securities available for sale	(118,334)	(126,064)
Maturities, paydowns and calls of securities available for sale	102,671	103,509
Maturities, paydowns and calls of securities held to maturity	327	149
Originations of mortgage warehouse loans	(943,243)	(784,671)
Proceeds from pay-offs of mortgage warehouse loans	1,007,133	757,482
Net (increase)/decrease in loans, excluding mortgage warehouse and loans held for sale	(70,945)	34,017
Return of capital on limited partnership investments	144	520
Capital calls on limited partnership investments	(1,450)	(1,000)
Purchases of premises and equipment	(544)	(1,088)
Proceeds from sales of premises and equipment	53	171
Proceeds from sales of other real estate owned	148	628
Net cash used in investing activities	(24,040)	(16,347)
Cash flows from financing activities:
Net increase in deposits	68,724	27,510
Net decrease in other borrowed funds	(248)	(237)
Net decrease in securities sold under agreements to repurchase	(8,996)	(6,110)
Dividends paid	(1,749)	(1,748)
Taxes paid related to net share settlement of equity awards	(22)	(62)
Net cash provided by financing activities	57,709	19,353
Net increase in cash and cash equivalents	60,070	41,708
Cash and cash equivalents at beginning of period	187,187	259,883
Cash and cash equivalents at end of period	247,257	301,591
Income taxes paid	1	12
Significant non-cash transactions:
Real estate acquired in settlement of loans	$ 405	$ 119

Significant Accounting Policies

Significant Accounting Policies	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Significant Accounting Policies	Note 1 - Significant Accounting Policies Nature of Operations : Origin Bancorp, Inc. (the "Company") is a financial holding company headquartered in Ruston, Louisiana. The Company's wholly owned bank subsidiary, Origin Bank (the "Bank"), provides a broad range of financial services to businesses, municipalities, high net worth individuals and retail clients. The Company currently operates 41 banking centers located in North Louisiana, Central Mississippi, Dallas/Fort Worth and Houston, Texas. Consolidation : The condensed consolidated financial statements include the accounts of the Company and all other entities in which the Company has a controlling financial interest, including the Bank and Davison Insurance Agency, LLC ("Davison Insurance"), and Davison Insurance’s wholly owned subsidiary, Thomas & Farr Agency, LLC (“T&F”). These condensed consolidated interim financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("US GAAP") and with the rules and regulations of the Securities and Exchange Commission for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. In the opinion of management, all normal and recurring adjustments which are considered necessary to fairly present the results for the interim periods presented have been included. These unaudited statements should be read in conjunction with the consolidated financial statements and notes thereto for the year ended December 31, 2017, included in the Company's prospectus filed with the Securities and Exchange Commission on May 9, 2018 pursuant to Section 424(b) of the Securities Act of 1933, as amended. Interim results are not necessarily indicative of results for a full year. Certain prior year amounts have been reclassified to conform to the current year financial statement presentations. These changes and reclassifications did not impact previously reported net income or comprehensive income. The Company’s significant accounting policies are described in Note 1 of the Notes to Consolidated Financial Statements in the 2017 financial statements included in the Company's prospectus filed with the Securities and Exchange Commission on May 9, 2018. There were no new accounting policies or changes to existing policies adopted during the first three months of 2018 that had a significant effect on the Company’s results of operations or financial condition. For interim reporting purposes, the Company follows the same basic 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 US GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates. Revenue Recognition: On January 1, 2018, the Company adopted Accounting Standards Update "ASU" No. 2014-09, " Revenue from Contracts with Customers " ( Topic 606 ), which outlines a single comprehensive revenue recognition model for entities to follow in accounting for revenue from contracts with customers. The implementation of this new guidance did not have a material impact on the measurement or recognition of revenue and no cumulative effect adjustment was recorded to opening retained earnings. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company's historic accounting under Topic 605. The majority of the Company's revenue is generated from sources outside the scope of Topic 606. Interest and fees on loans, income from investment securities and mortgage banking revenue are all outside the scope of Topic 606 and are recorded in adherence with US GAAP. Service charges and fees on deposit accounts, credit card interchange insurance commission and fee income, as well as gains and losses on the sale of other assets including other real estate owned (“OREO”) are within the scope of Topic 606; however, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Descriptions of the Company's revenue generating activities that are within the scope of Topic 606 are described below. Service charges and fees on deposit accounts Service charges and fees on deposit accounts are primarily comprised of maintenance fees, service fees, stop payment and non-sufficient funds fees. The Company's performance obligation for service fees or other fees covering a period of time are generally satisfied, and related revenue recognized, over the period in which the service is provided. The Company's performance obligation for transactional-based fees are generally satisfied, and related revenue recognized, at a point in time. Insurance commission and fee income The Company earns commission income through production on behalf of insurance carriers and also earns fee income by providing complementary services such as collection of premiums. In most instances the Company considers the performance obligation to be complete at the time the service was rendered. Credit card interchange income The Company records credit card interchange income at a point in time as card transactions occur. The Company's performance obligation for these transactions is deemed to have occurred upon completion of each transaction. The amounts are included as a component of other income in the consolidated statements of income. Gain or loss on sale of other assets and OREO In the normal course of business, the Company recognizes the sale on other assets and OREO, along with any gain or loss, when control of the property transfers to the buyer through an executed contractual agreement. The transaction price is fixed, and on occasion the Company will finance a portion of the purchase price of the transferred asset.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Earnings Per Share	Note 2 - Earnings Per Share Three months ended March 31, (Dollars in thousands, except per share data) 2018 2017 Basic earnings per common share Net income $ 13,407 $ 7,247 Less: Dividends to preferred stock 1,115 1,115 Net income allocated to participating stockholders (1) 553 267 Net income available to common stockholders $ 11,739 $ 5,865 Weighted average common shares outstanding (2) 19,459,278 19,404,491 Basic earnings per common share $ 0.60 $ 0.30 Diluted earnings per common share Diluted earnings applicable to common stockholders (3) $ 11,771 $ 5,886 Weighted average diluted common shares outstanding: Weighted average common shares outstanding (2) 19,459,278 19,404,491 Dilutive effect of common stock options 216,195 190,782 Weighted average diluted common shares outstanding 19,675,473 19,595,273 Diluted earnings per common share $ 0.60 $ 0.30 ____________________________ (1) Participating stockholders include those that hold certain share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents. Such shares or units are considered participating securities (i.e., nonvested restricted stock grants). Additionally, Series D preferred stockholders are participating stockholders as those shares participate in dividends with common shares on a one for one basis. Net income allocated to participating stockholders does not include dividends paid for preferred stock. (2) Weighted average common shares outstanding exclude average unearned restricted shares in the computation of basic earnings per share. Under the two-class method, unearned restricted shares are included in the computation of diluted earnings per share; however, depending on nuances of the computation, they may or may not affect the number of weighted average diluted common shares outstanding. Unearned restricted shares are considered issued and therefore included as part of total issued shares disclosed on the consolidated balance sheets. (3) Net income allocated to common stockholders for basic and diluted earnings per share may differ under the two-class method as a result of adding common stock equivalents for options to dilutive shares outstanding, which alters the ratio used to allocate earnings to common stockholders and participating securities for the purposes of calculating diluted earnings per share.

Securities

Securities	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities	Note 3 - Securities The following table is a summary of the amortized cost and estimated fair value, including gross unrealized gains and losses, of available for sale, held to maturity and securities carried at fair value through income for the dates indicated: (Dollars in thousands) Amortized Gross Gross Unrealized Losses Fair March 31, 2018 Available for sale: State and municipal securities $ 124,889 $ 2,621 $ (289 ) $ 127,221 Corporate bonds 3,000 115 — 3,115 Residential mortgage-backed securities 105,456 189 (2,204 ) 103,441 Residential collateralized mortgage obligations 184,648 67 (4,335 ) 180,380 Total $ 417,993 $ 2,992 $ (6,828 ) $ 414,157 Held to maturity: State and municipal securities $ 19,860 $ — $ (2 ) $ 19,858 Securities carried at fair value through income: State and municipal securities (1) $ 11,918 $ — $ — $ 11,723 December 31, 2017 Available for sale: State and municipal securities $ 125,909 $ 4,104 $ (35 ) $ 129,978 Corporate bonds 3,000 136 — 3,136 Residential mortgage-backed securities 105,132 492 (595 ) 105,029 Residential collateralized mortgage obligations 168,645 262 (2,518 ) 166,389 Total $ 402,686 $ 4,994 $ (3,148 ) $ 404,532 Held to maturity: State and municipal securities $ 20,188 $ 77 $ — $ 20,265 Securities carried at fair value through income: State and municipal securities (1) $ 11,918 $ — $ — $ 12,033 ____________________________ (1) Securities carried at fair value through income have no unrealized gains of losses at the balance sheet date as all changes in value have been recognized in the consolidated statements of income. See Note 5 - Fair Value of Financial Instruments for more information. Securities with unrealized losses at March 31, 2018 and December 31, 2017, aggregated by investment category and those individual securities have been in a continuous unrealized loss position under and over 12 months were as follows: (Dollars in thousands) Less than 12 Months 12 Months or More Total March 31, 2018 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available for sale: State and municipal securities $ 29,828 $ (247 ) $ 1,190 $ (42 ) $ 31,018 $ (289 ) Residential mortgage-backed securities 68,433 (1,435 ) 19,072 (769 ) 87,505 (2,204 ) Residential collateralized mortgage obligations 113,359 (1,772 ) 57,473 (2,563 ) 170,832 (4,335 ) Total $ 211,620 $ (3,454 ) $ 77,735 $ (3,374 ) $ 289,355 $ (6,828 ) Held to maturity: State and municipal securities $ 14,635 $ (2 ) $ — $ — $ 14,635 $ (2 ) December 31, 2017 Available for sale: State and municipal securities $ 2,114 $ (5 ) $ 1,210 $ (30 ) $ 3,324 $ (35 ) Residential mortgage-backed securities 46,018 (198 ) 20,233 (397 ) 66,251 (595 ) Residential collateralized mortgage obligations 70,788 (641 ) 60,622 (1,877 ) 131,410 (2,518 ) Total $ 118,920 $ (844 ) $ 82,065 $ (2,304 ) $ 200,985 $ (3,148 ) Held to maturity: State and municipal securities $ — $ — $ — $ — $ — $ — At March 31, 2018, the Company had 114 securities that were in an unrealized loss position. The unrealized losses for each of the securities relate to market interest rate changes. The Company has considered the current market for the securities in an unrealized loss position, as well as the severity and duration of the impairments, and expects that the value will recover. Management does not intend to sell these investments until the fair value exceeds amortized cost and it is more likely than not that the Company will not be required to sell debt securities before the anticipated recovery of the amortized cost basis of the security; thus, the impairment is determined not to be other-than-temporary. The following table presents the amortized cost and fair value of securities available for sale and held to maturity at March 31, 2018, 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, 2018 Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ — $ — $ 2,905 $ 2,920 Due after one year through five years 14,637 14,635 27,718 28,271 Due after five years through ten years — — 84,633 86,216 Due after ten years 5,223 5,223 12,633 12,929 Residential mortgage-backed securities — — 105,456 103,441 Residential collateralized mortgage obligations — — 184,648 180,380 Total $ 19,860 $ 19,858 $ 417,993 $ 414,157 The following table presents carrying amounts of securities pledged as collateral for deposits and repurchase agreements for the period ends presented. (Dollars in thousands) March 31, 2018 December 31, 2017 Carrying value of securities pledged to secure public deposits $ 256,224 $ 276,319 Carrying value of securities pledged to repurchase agreements $ 35,669 $ 36,685

Loans

Loans	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Loans	Note 4 - Loans Loans consist of the following: (Dollars in thousands) March 31, 2018 December 31, 2017 Loans held for sale $ 48,988 $ 65,343 Loans held for investment: Loans secured by real estate: Commercial real estate $ 1,096,948 $ 1,083,275 Construction/land/land development 340,684 322,404 Residential real estate 583,461 570,583 Total real estate 2,021,093 1,976,262 Commercial and industrial 1,012,760 989,220 Mortgage warehouse lines of credit 191,154 255,044 Consumer 20,985 20,505 Total loans held for investment (1) 3,245,992 3,241,031 Less: Allowance for loan losses 34,132 37,083 Net loans held for investment $ 3,211,860 $ 3,203,948 ____________________________ (1) Presented net of net deferred loan fees of $1.5 million and $1.0 million at March 31, 2018 and December 31, 2017, respectively. Included in total loans held for investment are $20.4 million and $5.5 million of commercial real estate loans and commercial and industrial loans, respectively, for which the fair value option has been elected at March 31, 2018. At December 31, 2017, the Company held $21.0 million and $5.6 million of commercial real estate loans and commercial and industrial loans, respectively, at fair value. 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. Risk ratings are continually evaluated to ensure they are appropriate based on currently available information. These risk ratings are the primary indicator of credit quality for its loan portfolio. The following is a summary description of the Company's internal risk ratings: • Pass (1-6) Loans within this risk rating are further categorized as follows: Minimal risk (1) Well-collateralized by cash equivalent instruments held by the Bank. Moderate risk (2) Borrowers with excellent asset quality and liquidity. Borrowers' capitalization and liquidity exceed industry norms. Borrowers in this category have significant levels of liquid assets and have a low level of leverage. Better than average risk (3) Borrowers with strong financial strength and excellent liquidity that consistently demonstrate strong operating performance. Borrowers in this category generally have a sizable net worth that can be converted into liquid assets within 12 months. Average risk (4) Borrowers with sound credit quality and financial performance, including liquidity. Borrowers are supported by sufficient cash flow coverage generated through operations across the full business cycle. Marginally acceptable risk (5) Loans generally meet minimum requirements for an acceptable loan in accordance with lending policy, but possess one or more attributes that cause the overall risk profile to be higher than the majority of newly approved loans. Watch (6) A passing loan with one or more factors that identify a potential weakness in the overall ability of the borrower to repay the loan. These weaknesses are generally mitigated by other factors that reduce the risk of delinquency or loss. • Special Mention (7) This grade is intended to be temporary and includes borrowers whose credit quality have deteriorated and is at risk of further decline. • Substandard (8) This grade includes "Substandard" loans, in accordance with 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, in accordance with 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 in accordance with regulatory guidelines. Loss loans are charged-off or written-down when repayment is not expected. The recorded investment in loans by credit quality indicator at March 31, 2018 and December 31, 2017, excluding loans held for sale, were as follows: March 31, 2018 (Dollars in thousands) Pass Special mention Substandard Doubtful Loss Total Loans secured by real estate: Commercial real estate $ 1,070,984 $ 5,348 $ 20,616 $ — $ — $ 1,096,948 Construction/land/land development 337,148 165 3,371 — — 340,684 Residential real estate 574,470 33 8,958 — — 583,461 Total real estate 1,982,602 5,546 32,945 — — 2,021,093 Commercial and industrial 945,417 9,652 57,691 — — 1,012,760 Mortgage warehouse lines of credit 191,154 — — — — 191,154 Consumer 20,636 — 349 — — 20,985 Total loans held for investment $ 3,139,809 $ 15,198 $ 90,985 $ — $ — $ 3,245,992 December 31, 2017 (Dollars in thousands) Pass Special mention Substandard Doubtful Loss Total Loans secured by real estate: Commercial real estate $ 1,055,911 $ 7,798 $ 19,566 $ — $ — $ 1,083,275 Construction/land/land development 318,488 170 3,746 — — 322,404 Residential real estate 560,945 778 8,860 — — 570,583 Total real estate 1,935,344 8,746 32,172 — — 1,976,262 Commercial and industrial 915,111 15,332 58,777 — — 989,220 Mortgage warehouse lines of credit 255,044 — — — — 255,044 Consumer 20,223 — 279 3 — 20,505 Total loans held for investment $ 3,125,722 $ 24,078 $ 91,228 $ 3 $ — $ 3,241,031 The following tables present the Company’s loan portfolio aging analysis at the dates indicated: March 31, 2018 (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 $ 8,940 $ — $ 844 $ 9,784 $ 1,087,164 $ 1,096,948 $ — Construction/land/land development 1,534 — 558 2,092 338,592 340,684 — Residential real estate 2,917 653 3,428 6,998 576,463 583,461 — Total real estate 13,391 653 4,830 18,874 2,002,219 2,021,093 — Commercial and industrial 1,877 355 7,905 10,137 1,002,623 1,012,760 — Mortgage warehouse lines of credit — — — — 191,154 191,154 — Consumer 136 64 68 268 20,717 20,985 — Total loans held for investment $ 15,404 $ 1,072 $ 12,803 $ 29,279 $ 3,216,713 $ 3,245,992 $ — December 31, 2017 (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 $ 8,427 $ 2,791 $ 1,150 $ 12,368 $ 1,070,907 $ 1,083,275 $ — Construction/land/land development 1,488 172 464 2,124 320,280 322,404 — Residential real estate 2,630 347 3,910 6,887 563,696 570,583 — Total real estate 12,545 3,310 5,524 21,379 1,954,883 1,976,262 — Commercial and industrial 1,517 9,922 8,074 19,513 969,707 989,220 — Mortgage warehouse lines of credit — — — — 255,044 255,044 — Consumer 178 128 74 380 20,125 20,505 — Total loans held for investment $ 14,240 $ 13,360 $ 13,672 $ 41,272 $ 3,199,759 $ 3,241,031 $ — The following tables detail activity in the allowance for loan losses by portfolio segment. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Three months ended March 31, 2018 (Dollars in thousands) Beginning balance Charge-offs Recoveries Provision (Benefit) (1) Ending balance Loans secured by real estate: Commercial real estate $ 8,998 $ 9 $ 127 $ 1,028 $ 10,144 Construction/land/land development 2,950 — 1 (244 ) 2,707 Residential real estate 5,807 9 19 (346 ) 5,471 Commercial and industrial 18,831 1,703 174 (1,965 ) 15,337 Mortgage warehouse lines of credit 214 — — (56 ) 158 Consumer 283 17 24 25 315 Total $ 37,083 $ 1,738 $ 345 $ (1,558 ) $ 34,132 ____________________________ (1) The $1.5 million benefit for credit losses on the consolidated statements of income includes a $1.6 million net loan loss benefit and a $34,000 provision for off-balance sheet commitments for the three months ended March 31, 2018. Three months ended March 31, 2017 (Dollars in thousands) Beginning balance Charge-offs Recoveries Provision (Benefit) (1) Ending balance Loans secured by real estate: Commercial real estate $ 8,718 $ — $ 2 $ 250 $ 8,970 Construction/land/land development 2,805 — 1 (320 ) 2,486 Residential real estate 5,003 13 37 856 5,883 Commercial and industrial 33,590 813 149 878 33,804 Mortgage warehouse lines of credit 139 — — (11 ) 128 Consumer 276 22 6 84 344 Total $ 50,531 $ 848 $ 195 $ 1,737 $ 51,615 ____________________________ (1) The $2.8 million provision for credit losses on the consolidated statements of income includes a $1.7 million net loan loss provision and a $1.1 million provision for off-balance sheet commitments for the three months ended March 31, 2017. The following tables present the balance of loans receivable by method of impairment evaluation at the dates indicated: March 31, 2018 (Dollars in thousands) 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 ended loan balance collectively evaluated for impairment (1) Loans secured by real estate: Commercial real estate $ 1,448 $ 8,696 $ 10,236 $ 1,066,284 Construction/land/land development 4 2,703 1,421 339,263 Residential real estate 28 5,443 7,498 575,963 Commercial and industrial 1,680 13,657 13,349 993,905 Mortgage warehouse lines of credit — 158 — 191,154 Consumer 97 218 264 20,721 Total $ 3,257 $ 30,875 $ 32,768 $ 3,187,290 ____________________________ (1) Excludes $20.4 million and $5.5 million of commercial real estate loans and commercial and industrial loans, respectively, at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information. December 31, 2017 (Dollars in thousands) 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 ended loan balance collectively evaluated for impairment (1) Loans secured by real estate: Commercial real estate $ 312 $ 8,686 $ 4,945 $ 1,057,330 Construction/land/land development 4 2,946 1,963 320,441 Residential real estate 72 5,735 7,915 562,668 Commercial and industrial 4,356 14,475 24,598 959,011 Mortgage warehouse lines of credit — 214 — 255,044 Consumer 63 220 237 20,268 Total $ 4,807 $ 32,276 $ 39,658 $ 3,174,762 ____________________________ (1) Excludes $21.0 million and $5.6 million of commercial real estate loans and commercial and industrial loans, respectively, at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information. The following tables present impaired loans at the dates indicated. No mortgage warehouse lines of credit were impaired at either March 31, 2018 or December 31, 2017. March 31, 2018 (Dollars in thousands) Unpaid contractual principal balance Recorded investment with no allowance Recorded investment with an allowance Total recorded investment Allocation of allowance for loan losses Loans secured by real estate: Commercial real estate $ 11,166 $ 1,973 $ 8,263 $ 10,236 $ 1,448 Construction/land/land development 1,740 1,272 149 1,421 4 Residential real estate 9,656 6,636 862 7,498 28 Total real estate 22,562 9,881 9,274 19,155 1,480 Commercial and industrial 13,815 5,587 7,762 13,349 1,680 Consumer 289 123 141 264 97 Total impaired loans $ 36,666 $ 15,591 $ 17,177 $ 32,768 $ 3,257 December 31, 2017 (Dollars in thousands) Unpaid contractual principal balance Recorded investment with no allowance Recorded investment with an allowance Total recorded investment Allocation of allowance for loan losses Loans secured by real estate: Commercial real estate $ 6,047 $ 1,782 $ 3,163 $ 4,945 $ 312 Construction/land/land development 2,268 1,813 150 1,963 4 Residential real estate 10,024 6,750 1,165 7,915 72 Total real estate 18,339 10,345 4,478 14,823 388 Commercial and industrial 25,212 6,161 18,437 24,598 4,356 Consumer 259 141 96 237 63 Total impaired loans $ 43,810 $ 16,647 $ 23,011 $ 39,658 $ 4,807 The average recorded investment and interest recognized on impaired loans while classified as impaired for the three months ended March 31, 2018 and 2017 were as follows: March 31, 2018 March 31, 2017 (Dollars in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Loans secured by real estate: Commercial real estate $ 9,864 $ 27 $ 6,377 $ 33 Construction/land/land development 1,847 9 1,032 3 Residential real estate 7,665 24 10,065 20 Total real estate 19,376 60 17,474 56 Commercial and industrial 17,717 88 61,183 14 Consumer 256 3 251 2 Total impaired loans $ 37,349 $ 151 $ 78,908 $ 72 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. Troubled debt restructurings are included in certain loan categories within impaired loans. At March 31, 2018, the Company has committed to advance $423,000 in connection with impaired loans. Non-performing (nonaccrual) loans held for investment were as follows: (Dollars in thousands) March 31, 2018 December 31, 2017 Loans secured by real estate: Commercial real estate $ 8,851 $ 1,745 Construction/land/land development 1,272 1,097 Residential real estate 7,226 7,166 Total real estate 17,349 10,008 Commercial and industrial 9,312 13,512 Consumer 349 282 Total nonaccrual loans $ 27,010 $ 23,802 For the three months ended March 31, 2018 and 2017, gross interest income which would have been recorded had the nonaccruing loans been current in accordance with their original terms was $430,000 and $904,000 , respectively. No interest income was recorded on these loans while they were considered nonaccrual during the three months ended March 31, 2018 or 2017. The Company elects the fair value option for recording residential mortgage loans held for sale, and certain commercial real estate and commercial and industrial loans, in accordance with US GAAP. The Company had no loans on nonaccrual that were recorded using the fair value option election at March 31, 2018 or December 31, 2017. The following is a summary of loans classified as troubled debt restructurings ("TDRs"). (Dollars in thousands) March 31, 2018 December 31, 2017 TDRs Nonaccrual TDRs $ 2,158 $ 2,622 Performing TDRs 6,051 14,234 Total $ 8,209 $ 16,856 The following table presents the pre and post-modification balances of TDR modifications that occurred during the March 31, 2018 period. There were no loans modified as a TDR during the three months ended March 31, 2017. Three months ended March 31, 2018 (Dollars in thousands) Number of loans restructured Pre-modification recorded balance Term Concessions Interest Rate Concessions Combination Total Modifications Loans secured by real estate: Residential real estate 1 $ 94 $ — $ — $ 91 $ 91 During the three months ended March 31, 2018 and 2017, there were no payment defaults for loans restructured as TDR's within the previous 12 months, respectively. 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, 2018 did not significantly impact the Company's determination of the allowance for loan losses. On an ongoing basis, the Company monitors the performance of the modified loans to their restructured terms. In the event of a subsequent default, the allowance for loan losses continues to be reassessed on the basis of an individual evaluation of the loan.

Fair Value of Financial Instrum

Fair Value of Financial Instruments	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value of Financial Instruments	Note 5 - Fair Value of Financial Instruments Fair value is the exchange price that is expected to be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Certain assets and liabilities are recorded in the Company's 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 which are generally determined based on a single price for each financial instrument provided to the Company by an unrelated third-party pricing service and is based on one or more of the following: • Quoted prices for similar, but not identical, assets or liabilities in active markets; • Quoted prices for identical or similar assets or liabilities in markets that are not active; • Inputs other than quoted prices that are observable, such as interest rate and yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates; • Other inputs derived from or corroborated by observable market inputs. Level 3 - Prices or valuation techniques that require inputs that are both significant and unobservable in the market. These instruments are valued using the best information available, some of which is internally developed, and reflects the Company's own assumptions about the risk premiums that market participants would generally require and the assumptions they would use. There were no transfers between fair value reporting levels for any period presented. Fair Values of Assets and Liabilities Recorded on a Recurring Basis The following tables summarize financial assets and financial liabilities recorded at fair value on a recurring basis at March 31, 2018 and December 31, 2017, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value. There were no changes in the valuation techniques during either period. March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Total State and municipal securities $ — $ 87,260 $ 39,961 $ 127,221 Corporate bonds — 3,115 — 3,115 Residential mortgage-backed securities — 103,441 — 103,441 Residential collateralized mortgage obligations — 180,380 — 180,380 Securities available for sale — 374,196 39,961 414,157 Securities carried at fair value through income — — 11,723 11,723 Loans held for sale — 19,301 — 19,301 Loans at fair value — — 25,934 25,934 Mortgage servicing rights — — 25,999 25,999 Other assets - derivatives — 2,716 — 2,716 Total recurring fair value measurements - assets $ — $ 396,213 $ 103,617 $ 499,830 Other liabilities - derivatives $ — $ (1,898 ) $ — $ (1,898 ) Total recurring fair value measurements - liabilities $ — $ (1,898 ) $ — $ (1,898 ) December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Total State and municipal securities $ — $ 87,963 $ 42,015 $ 129,978 Corporate bonds — 3,136 — 3,136 Residential mortgage-backed securities — 105,029 — 105,029 Residential collateralized mortgage obligations — 166,389 — 166,389 Securities available for sale — 362,517 42,015 404,532 Securities carried at fair value through income — — 12,033 12,033 Loans held for sale — 32,768 — 32,768 Loans at fair value — — 26,611 26,611 Mortgage servicing rights — — 24,182 24,182 Other assets - derivatives — 3,146 — 3,146 Total recurring fair value measurements - assets $ — $ 398,431 $ 104,841 $ 503,272 Other liabilities - derivatives $ — $ (3,320 ) $ — $ (3,320 ) Total recurring fair value measurements - liabilities $ — $ (3,320 ) $ — $ (3,320 ) The changes in Level 3 assets and liabilities measured at fair value on a recurring basis for the three months ended March 31, 2018 and 2017 are summarized as follows: (Dollars in thousands) Loans at Fair Value MSRs Securities Available for Sale Securities at FV Through Income Balance at January 1, 2018 $ 26,611 $ 24,182 $ 42,015 $ 12,033 Gain (loss) recognized in earnings: Mortgage banking revenue — 1,274 — — Other noninterest income (295 ) — — (310 ) Gain (loss) recognized in AOCI — — (727 ) — Purchases, issuances, sales and settlements: Originations 543 Purchases — — 259 — Settlements (382 ) — (1,586 ) — Balance at March 31, 2018 $ 25,934 $ 25,999 $ 39,961 $ 11,723 Balance at January 1, 2017 $ 33,693 $ 29,385 $ 43,858 $ 12,511 Gain (loss) recognized in earnings: Mortgage banking revenue — (1,131 ) — — Other noninterest income (165 ) — — (97 ) Gain (loss) recognized in AOCI — — 2,151 — Purchases, issuances, sales, and settlements: Originations — 628 — — Purchases — — 190 — Sales (2,516 ) — — — Settlements (1,481 ) — (1,524 ) — Balance at March 31, 2017 $ 29,531 $ 28,882 $ 44,675 $ 12,414 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 2 or Level 3 inputs. For Level 2 securities, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, market consensus prepayment speeds, credit information and the security's terms and conditions, among other things. In order to ensure the fair values are consistent with ASC 820, Fair Value Measurements and Disclosures, the Company periodically checks the fair value by comparing them to another pricing source, such as Bloomberg. The third -party pricing service is subject to an annual review of internal controls (SSAE 16), which is 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 The carrying amounts of the mortgage servicing rights equal fair value. Mortgage servicing rights are valued on a discounted cash flow valuation technique; see Note 6 - Mortgage Banking for more information on inputs. Derivatives Fair values for interest rate swap agreements are based upon the amounts that would be required to settle the contracts. Fair values for derivative loan commitments and forward loan sale commitments are based on fair values of the underlying mortgage loans and the probability of such commitments being exercised. Significant management judgment and estimation is required in determining these fair value measurements. Fair Values of Assets Recorded on a Recurring Basis for which the Fair Value Option has been Elected Certain assets are measured at fair value on a recurring basis due to the Company's election to adopt fair value accounting treatment for those assets. This election allows for a more effective offset of the changes in fair values of the assets and the derivative instruments used to economically hedge them without the burden of complying with the requirements for hedge accounting under ASC 815, Derivatives and Hedging. For assets for which the fair value has been elected, the earned current contractual interest payment is recognized in interest income, loan origination costs and fees on fair value option loans are recognized in earnings as incurred and not deferred. At March 31, 2018 and 2017, 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, 2018 (Dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale (1) $ 19,301 $ 19,073 $ 228 Commercial and industrial loans held for investment (2) 5,506 5,506 — Commercial real estate loans held for investment (2) 20,428 20,155 273 Securities carried at fair value through income 11,723 11,918 (195 ) Total $ 56,958 $ 56,652 $ 306 ____________________________ (1) $246,000 of loans were past due 90 days or more at March 31, 2018, and the Company had guarantees receivable from U.S. Government agencies for 100% of this amount. (2) There were no commercial and industrial loans or commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or past due 90 days or more at March 31, 2018. December 31, 2017 (Dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale (1) $ 32,768 $ 32,216 $ 552 Commercial and industrial loans held for investment (2) 5,611 5,591 20 Commercial real estate loans held for investment (2) 21,000 20,451 549 Securities carried at fair value through income 12,033 11,918 115 Total $ 71,412 $ 70,176 $ 1,236 ____________________________ (1) $2.4 million of loans were past due 90 days or more at December 31, 2017. Of this balance, the Company had guarantees receivable from U.S. government agencies totaling $1.8 million . (2) There were no commercial and industrial loans or commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or past due 90 days or more at December 31, 2017. Changes in the fair value of assets for which the Company elected the fair value option are classified in the income statement line items reflected in the following table: Three months ended March 31, (Dollars in thousands) 2018 2017 Changes in fair value included in noninterest income: Mortgage banking revenue $ (324 ) $ 91 Other income: Loans at fair value held for investment $ (295 ) $ (165 ) Securities carried at fair value through income (310 ) (97 ) Total impact on other income (605 ) (262 ) Total fair value option impact on noninterest income $ (929 ) $ (171 ) The following methodologies were used to measure the fair value of financial assets valued on a recurring basis for which the fair value option was elected: Securities at Fair Value through Income Securities carried at fair value through income are valued using a discounted cash flow with a credit spread applied to each instrument based on the credit worthiness of each issuer. Credit spreads ranged from 126 to 227 basis points at March 31, 2018 and December 31, 2017. The Company believes the fair value approximates an exit price. Loans Held for Sale Fair values for loans held for sale are established using anticipated sale prices for loans allocated to a sale commitment, and those unallocated to a commitment are valued based on the interest rate and term for similar loans allocated. The Company believes the fair value approximates an exit price. Loans Held for Investment For loans held for investment for which the fair value option has been elected, fair values are calculated using a discounted cash flow model with inputs including observable interest rate curves and unobservable credit adjustment spreads based on credit risk inherent in the loan. Credit spreads ranged from 283 to 413 basis points at March 31, 2018 and December 31, 2017. The Company believes the fair value approximates an exit price. Fair Value of Assets Recorded on a Nonrecurring Basis Government National Mortgage Association Repurchase Asset The Company recorded $29.7 million and $32.6 million , respectively, at March 31, 2018 and December 31, 2017 for Government National Mortgage Association ("GNMA") repurchase assets included in mortgage loans held for sale on the 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 6 - Mortgage Banking for more information on the GNMA repurchase asset. Collateral Dependent Impaired Loans Loans for which it is probable that the Company will not collect all principal and interest due according to contractual terms are measured for impairment. Allowable methods for determining the amount of impairment include estimating fair value using the fair value of the collateral for collateral-dependent loans. If the impaired loan is identified as collateral-dependent, the fair value method of measuring the amount of impairment is utilized. This method requires obtaining a current independent appraisal of the collateral and applying a discount factor to the value. Impaired loans that are collateral-dependent are classified within Level 3 of the fair value hierarchy when impairment is determined using the fair value method. The fair value of impaired loans with specific allocated losses was $13.9 million and $18.2 million at March 31, 2018 and December 31, 2017, respectively. Non-Financial Assets Foreclosed assets held for sale are the only non-financial assets valued on a non-recurring basis which are initially recorded by the Company at fair value, less estimated costs to sell. At foreclosure, if the fair value, less estimated costs to sell, of the real estate acquired is less than the Company’s recorded investment in the related loan, a write-down is recognized through a charge to the allowance for loan losses. Additionally, valuations are periodically performed by management and any subsequent reduction in value is recognized by a charge to income. The carrying value and fair value of foreclosed assets held for sale is estimated using Level 3 inputs based on observable market data and was $722,000 and $499,000 at March 31, 2018 and December 31, 2017, respectively. At March 31, 2018, the Company had $163,000 in residential mortgage loans in the process of foreclosure. Fair Values of Financial Instruments Not Recorded at Fair Value The carrying value and estimated fair values of financial instruments not recorded at fair value are as follows: March 31, 2018 December 31, 2017 (Dollars in thousands) Financial assets: Carrying Estimated Carrying Value Estimated Fair Value Level 1 inputs: Cash and cash equivalents $ 247,257 $ 247,257 $ 187,187 $ 187,187 Level 2 inputs: Securities held to maturity 19,860 19,858 20,188 20,265 Non-marketable equity securities held in other financial institutions 22,995 22,995 22,967 22,967 Accrued interest and loan fees receivable 11,956 11,956 10,719 10,719 Level 3 inputs: Loans held for investment, net (1) 3,220,058 3,144,110 3,177,337 3,238,872 Financial liabilities: Level 2 inputs: Deposits 3,580,738 3,376,985 3,512,014 3,352,213 FHLB advances and other borrowings 132,224 132,661 144,357 145,330 Junior subordinated debentures 9,625 14,476 9,619 14,132 Accrued interest payable 2,265 2,265 2,424 2,424 ____________________________ (1) Loans held for investment, net does not include $25.9 million or $26.6 million of loans held at fair value at March 31, 2018 or December 31, 2017, respectively.

Mortgage Banking

Mortgage Banking	3 Months Ended
	Mar. 31, 2018
Mortgage Banking [Abstract]
Mortgage Banking	Note 6 - Mortgage Banking The following table presents the Company's mortgage banking operations: At and for the three months ended (Dollars in thousands, unaudited) Mortgage banking revenue March 31, 2018 March 31, Origination $ 210 $ 227 Gain on sale of loans held for sale 2,024 2,294 Servicing 1,837 2,107 Total gross mortgage revenue 4,071 4,628 Mortgage derivatives gain (loss) (539 ) 506 MSR change due to payoffs and paydowns (784 ) (952 ) MSR and hedge fair value adjustment (379 ) (90 ) Gain (loss) on MSR sale (1) 25 — Mortgage banking revenue $ 2,394 $ 4,092 Origination volume $ 74,938 $ 102,723 Mortgage loans sold 84,528 114,563 Outstanding principal balance of mortgage loans serviced for others 2,167,185 2,483,423 ___________________________ (1) Amount shown during the three months ended March 31, 2018 reflects final settlement on a loan servicing portfolio sold during the three months ended December 31, 2017. Management uses mortgage-backed securities to mitigate impact of changes in fair value of MSRs. See Note 7 - Derivative Financial Instruments for further information. Changes in MSRs related to fair value are recorded in mortgage banking revenue in the consolidated statements of income. Mortgage Servicing Rights ("MSRs") Activity in MSRs was as follows: Three months ended March 31, (Dollars in thousands) 2018 2017 Balance at beginning of period $ 24,182 $ 29,385 Origination of servicing rights 543 628 Change in fair value, including amortization 1,274 (1,131 ) Balance at end of period $ 25,999 $ 28,882 The significant assumptions used to value MSRs were as follows: March 31, 2018 December 31, 2017 Prepayment speed 8.78 % 10.80 % Discount rate 9.42 % 9.33 % In recent years, there have been significant market-driven fluctuations in these 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. The Company receives annual servicing fee income approximating 0.29% of the outstanding balance of the underlying loans. In connection with the Company's activities as a servicer of mortgage loans, the investors and the securitization trusts have no recourse to the Company's assets for failure of debtors to pay when due. The Company is potentially subject to losses in its loan servicing portfolio due to loan foreclosures. The Company has obligations to either repurchase the outstanding principal balance of a loan or make the purchaser whole for the economic benefits of a loan if it is determined that the loan sold was in violation of representations or warranties made by it at the time of the sale, herein referred 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 requests may be made until the loan is paid in full. When a putback request is received, the Company evaluates the request and takes appropriate actions based on the nature of the request. The Company is required by Federal National Mortgage Association and Federal Home Loan Mortgage Corporation to provide a response to putback requests within 60 days of the date of receipt. The total mortgage loan servicing putback expenses incurred by the Company were $0 and $19,000 for the three months ended March 31, 2018 and 2017, respectively. At March 31, 2018 and December 31, 2017, the reserve for mortgage loan servicing putback expenses totaled $196,000 and $254,000 , respectively. There is inherent uncertainty in reasonably estimating the requirement for reserves against future mortgage loan servicing putback expenses. Future putback expenses are dependent on many subjective factors, including the review procedures of the purchasers and the potential refinance activity on loans sold with servicing released and the subsequent consequences under the representations and warranties. Government National Mortgage Association ("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 such a delinquent loan for an amount equal to 100 percent 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 brought back onto the balance sheet as mortgage loans held for sale, regardless of whether the Company intends to exercise the buy-back option. These loans are reported as held for sale at lower of cost or market with the offsetting liability being reported in FHLB advances and other borrowings. The balance included in mortgage loans held for sale and FHLB advances and other borrowings at March 31, 2018 and December 31, 2017 was $29.7 million and $32.6 million , respectively.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Note 7 - 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 income statement on a recurring basis. Cash Flow Hedges of Interest Rate Risk The Company is a party in interest rate swap agreements under which the Company receives interest at a variable rate and pays at a fixed rate. This derivative instrument represented by this swap agreement is designated as a cash flow hedge of the Company's forecasted variable cash flows under a variable-rate term borrowing agreement. During the term of the swap agreement, the effective portion of changes in the fair value of the derivative instrument are recorded in accumulated other comprehensive income and subsequently reclassified into earnings in the periods that the hedged forecasted variable-rate interest payments affected earnings. There was no ineffective portion of the change in fair value of the derivative recognized directly in earnings. The entire swap fair value will be reclassified into earnings before the expiration date. 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 and not significantly impacting its results of operations. Because the interest rate derivatives associated with this program do not meet hedge accounting requirements, changes in the fair value of both the customer derivatives and any offsetting derivatives are recognized directly in earnings as a component of noninterest income. Mortgage banking derivatives The Company enters into certain derivative agreements as part of its mortgage banking and related risk management activities. These agreements include interest rate lock commitments on prospective residential mortgage loans and forward commitments to sell these loans to investors on a mandatory delivery basis. The Company also economically hedges the value of MSRs by entering into a series of commitments to purchase mortgage-backed securities in the future. Fair Values of Derivative Instruments on the Balance Sheet The following tables disclose the fair value of derivative instruments in the Company's balance sheets at March 31, 2018 and December 31, 2017, 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, 2018 and 2017: Notional Amounts (1) Fair Values (Dollars in thousands) March 31, 2018 December 31, 2017 March 31, 2018 December 31, 2017 Derivatives designated as cash flow hedging instruments: Interest rate swaps included in other assets $ 10,500 $ 10,500 $ 222 $ 41 Derivatives not designated as hedging instruments: Interest rate swaps included in other assets $ 121,638 $ 132,959 $ 1,365 $ 2,314 Interest rate swaps included in other liabilities 142,398 159,479 (1,749 ) (3,221 ) Forward commitments to purchase mortgage-backed securities included in other assets (liabilities) 100,000 160,000 453 (50 ) Forward commitments to sell residential mortgage loans included in other assets (liabilities) 41,850 57,400 (149 ) (49 ) Interest rate-lock commitments on residential mortgage loans included in other assets 32,320 37,072 676 791 $ 438,206 $ 546,910 $ 596 $ (215 ) ____________________________ (1) Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the consolidated balance sheets. The weighted-average rates paid and received for interest rate swaps at March 31, 2018 were as follows: Weighted-Average Interest Rate Paid Interest Rate Received Interest rate swaps: Cash flow hedges 4.81 % 4.64 % Non-hedging interest rate swaps - financial institution counterparties 4.78 3.83 Non-hedging interest rate swaps - customer counterparties 3.78 4.76 Gains and losses recognized on derivative instruments not designated as hedging instruments are as follows: (Dollars in thousands) Three months ended March 31, Derivatives not designated as hedging instruments: 2018 2017 Amount of gain (loss) recognized in mortgage banking revenue $ (1,661 ) $ 389 Amount of gain recognized in other non-interest income 523 266 Some interest rate swaps included in other assets are 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, 2018 and December 31, 2017, the Company had cash collateral on deposit with swap counterparties totaling $500,000 and $7.0 million , respectively. These amounts are included in interest-bearing deposits in banks in the condensed consolidated balance sheets.

Stock and Incentive Compensatio

Stock and Incentive Compensation Plans	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock and Incentive Compensation Plans	Note 8 - Stock and Incentive Compensation Plans The Company has granted, and currently has outstanding, stock and incentive compensation awards subject to the provisions of the 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. 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, 2018, the maximum number of shares of the Company's common stock available for issuance under the 2012 Plan was 1,130,338 shares. Share-based compensation cost charged to income for the three months ended March 31, 2018 and 2017 is presented below: Three months ended March 31, (Dollars in thousands) 2018 2017 Restricted stock $ 194 $ 247 Stock options (1) — (30 ) Total stock compensation expense $ 194 $ 217 Related tax benefits recognized in net income $ 41 $ 76 ____________________________ (1) Stock option expense for the three months ended March 31, 2017 included expense reversal related to 5,546 common stock options forfeited during the period. All remaining stock options became fully vested during the first quarter of 2017 with no further expense incurred after February 2017. Restricted Stock Grants The Company's restricted stock grants are time-vested awards and are granted to the Company's Board of Directors, executives and senior management team. The service period in which time-vested awards are earned ranges from one to five years. Time-vested awards are valued utilizing the fair value of the Company's stock at the grant date. These awards are recognized on the straight-line method over the requisite service period, with forfeitures recognized as they occur. The following table summarizes the Company's time-vested award activity: Three months ended March 31, 2018 2017 Shares Weighted Average Grant-Date Fair Value Shares Weighted Average Grant-Date Fair Value Nonvested shares, January 1, 61,293 $ 24.61 84,019 $ 24.22 Granted 7,334 25.41 1,137 22.00 Vested (4,397 ) 24.91 (13,976 ) 21.23 Forfeited — — (3,524 ) 24.09 Nonvested shares, March 31, 64,230 $ 24.68 67,656 $ 22.95 During the three months ended March 31, 2018, award recipients surrendered 845 shares to cover taxes owed upon the vesting of restricted stock awards. During the three months ended March 31, 2017, award recipients surrendered 2,363 shares to cover taxes owed upon the vesting of restricted stock awards. At March 31, 2018, there was $1.2 million of total unrecognized compensation cost related to nonvested restricted shares awarded under the 2012 Plan. That cost is expected to be recognized over a weighted average period of 2.01 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 negotiated mergers. 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 rate, expected term of stock options, expected stock price volatility and expected dividends. Forfeitures are recognized as they occur. The table below summarizes the status of the Company's stock options and changes during the three months ended March 31, 2018 and 2017. (Dollars in thousands, except per share data) Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value Three months ended March 31, 2017 Outstanding at January 1, 2017 358,638 $ 11.37 7.79 $ 3,844 Forfeited (5,546 ) 23.89 Outstanding at March 31, 2017 353,092 $ 11.17 7.50 $ 3,923 Three months ended March 31, 2018 Outstanding at January 1, 2018 319,500 $ 10.65 7.07 $ 4,840 Outstanding at March 31, 2018 319,500 $ 10.65 6.82 $ 4,843 Exercisable at March 31, 2018 319,500 $ 10.65 6.82 $ 4,843 There were no stock options granted or exercised during the three months ended March 31, 2018 or 2017.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Note 9 - Income Taxes The provision for income taxes is as follows: Three months ended March 31, (Dollars in thousands) 2018 2017 Federal income taxes: Current $ 2,175 $ 2,382 Deferred 501 50 State income taxes: Current 76 161 Deferred 32 (13 ) Income tax expense $ 2,784 $ 2,580 Effective income tax rate 17.2 % 26.3 % The effective income tax rates differed from the U.S. statutory federal income tax rates of 21% during 2018 and 35% during 2017 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 the effective income tax rate to continue to remain below the U.S. statutory rate. These tax-exempt items can have a larger than proportional affect on the effective income tax rate as net income decreases. The Tax Cuts and Jobs Act, enacted on December 22, 2017, reduced the U.S. federal corporate tax rate from 35% to 21% effective January 1, 2018. The Company remeasured certain deferred tax assets and liabilities in the period of enactment based on the rates at which they are expected to reverse in the future, which is generally 21%. During the first quarter of 2018, the Company adopted the provisions of ASU 2018-02 which resulted in a $282,000 adjustment from accumulated other comprehensive income to retained earnings. Refer to Note 10 - Accumulated Other Comprehensive Income and Note 13 - Accounting Standards Updates for additional information. 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 2014.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Accumulated Other Comprehensive Income	Note 10 - Accumulated Other Comprehensive Income Accumulated other comprehensive income ("AOCI") 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 gains on AFS securities Cash flow hedges Accumulated other comprehensive income Balance at January 1, 2018 $ 1,280 $ 27 $ 1,307 Net change (4,492 ) 144 (4,348 ) Reclassification of tax effects related to the adoption of ASU 2018-02 (1) : Current (293 ) 17 (276 ) Deferred 569 (11 ) 558 Balance at March 31, 2018 $ (2,936 ) $ 177 $ (2,759 ) Balance at January 1, 2017 $ 3,505 $ (42 ) $ 3,463 Net change 278 21 299 Balance at March 31, 2017 $ 3,783 $ (21 ) $ 3,762 ____________________________ (1) During the first quarter of 2018 the Company adopted ASU 2018-02. The ASU was issued by the Financial Accounting Standards Board ("FASB") in February 2018 to address the issue of other comprehensive income or loss that became stranded in AOCI as a result of the re-measurement of an entity’s deferred income tax assets and liabilities following the reduction of the U.S. federal corporate tax rate from 35% to 21% pursuant to the enactment of the Tax Cuts and Jobs Act in December 2017. The Company also had certain current tax amounts stranded AOCI that resulted from a tax accounting election to tax net gains and losses on AFS securities and cash flow hedges as current items beginning in 2016. The Company reclassifies the taxes from AOCI to earnings as the individual securities and hedges are realized. Due to the change in corporate tax rates, the Company had certain net gains and losses taxed at the 35% rate reflected in AOCI. As these transactions are realized over time, they will flow through income tax expense at the 21% rate. Rather than adjusting income tax expense for the difference as each of these securities and instruments are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment.

Capital and Regulatory Matters

Capital and Regulatory Matters	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Capital and Regulatory Matters	Note 11 - 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 (the "Basel III Capital Rules"). Starting in January 2016, the implementation of the capital conservation buffer was effective for the Company starting at the 0.625% level and increasing 0.625% each year thereafter, until it reaches 2.5% on 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, including 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, 2018 and December 31, 2017, the Company and the Bank meet all capital adequacy requirements to which they are subject, including the capital buffer requirement. At March 31, 2018 and December 31, 2017, 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. There are no conditions or events since that notification that management believes have changed the Bank’s category. The actual capital amounts and ratios of the Company and Bank at March 31, 2018 and December 31, 2017, are presented in the following table: (Dollars in thousands) Actual Minimum Capital Required - Basel III Fully Phased-In To be Well Capitalized Under Prompt Corrective Action Provisions March 31, 2018 Amount Ratio Amount Ratio Amount Ratio Common Equity Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. $ 371,112 9.68 % $ 268,319 7.00 % N/A N/A Origin Bank 426,583 11.16 267,688 7.00 $ 248,567 6.50 % Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. 444,246 11.59 325,817 8.50 N/A N/A Origin Bank 426,583 11.16 325,049 8.50 305,929 8.00 Total Capital to Risk-Weighted Assets Origin Bancorp, Inc. 480,428 12.53 402,481 10.50 N/A N/A Origin Bank 462,765 12.10 401,530 10.50 382,409 10.00 Leverage Ratio Origin Bancorp, Inc. 444,246 10.65 166,790 4.00 N/A N/A Origin Bank 426,583 10.25 166,478 4.00 208,097 5.00 December 31, 2017 Common Equity Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. $ 360,069 9.35 % $ 269,570 7.00 % N/A N/A Origin Bank 416,175 10.82 269,244 7.00 $ 250,012 6.50 % Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. 433,338 11.25 327,411 8.50 N/A N/A Origin Bank 416,175 10.82 326,940 8.50 307,708 8.00 Total Capital to Risk-Weighted Assets Origin Bancorp, Inc. 472,437 12.26 404,616 10.50 N/A N/A Origin Bank 455,274 11.84 403,748 10.50 384,522 10.00 Leverage Ratio Origin Bancorp, Inc. 433,338 10.53 164,611 4.00 N/A N/A Origin Bank 416,175 10.13 164,334 4.00 205,418 5.00 In the ordinary course of business, the Company is dependent upon 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. Management believes under the foregoing dividend restrictions and while maintaining its “well capitalized” status, at March 31, 2018, the Bank could pay aggregate dividends of up to $18.1 million to the Company without prior regulatory approval.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 12 - Commitments and Contingencies Credit Related Commitments In the normal course of business, the Company enters into financial instruments, such as commitments to extend credit and letters of credit, to meet the financing needs of its customers. Such instruments are not reflected in the accompanying consolidated financial statements until they are funded, although they expose the Company to varying degrees of credit risk and interest rate risk in much the same way as funded loans. Commitments to extend credit include revolving commercial credit lines, nonrevolving loan commitments issued mainly to finance the acquisition and development or construction of real property or equipment, and credit card and personal credit lines. The availability of funds under commercial credit lines and loan commitments generally depends on whether the borrower continues to meet credit standards established in the underlying contract and has not violated other contractual conditions. Loan commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee by the borrower. Credit card and personal credit lines are generally subject to cancellation if the borrower’s credit quality deteriorates. A number of commercial and personal credit lines are used only partially or, in some cases, not at all before they expire, and the total commitment amounts do not necessarily represent future cash requirements of the Company. A substantial majority of the letters of credit are standby agreements that obligate the Company to fulfill a customer’s financial commitments to a third party if the customer is unable to perform. The Company issues standby letters of credit primarily to provide credit enhancement to its customers’ other commercial or public financing arrangements and to help them demonstrate financial capacity to vendors of essential goods and services. The contract amounts of these instruments reflect the Company’s exposure to credit risk. The Company undertakes the same credit evaluation in making loan commitments and assuming conditional obligations as it does for on-balance sheet instruments and may require collateral or other credit support. These off-balance sheet financial instruments are summarized below: (Dollars in thousands) March 31, 2018 December 31, 2017 Commitments to extend credit $ 1,047,196 $ 1,068,088 Standby letters of credit 80,991 79,893 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, 2018 and December 31, 2017, these credit card guarantees totaled $1.1 million and $1.0 million , respectively. This amount represents the maximum potential amount of future payments under the guarantee, which the Company is responsible for in the event of customer non-payment. At March 31, 2018 and December 31, 2017, the Company had FHLB letters of credit totaling $135 million and $185 million , respectively, available to secure public deposits, and for other purposes required or permitted by law. Management establishes an asset-specific allowance for lending-related commitments that are considered impaired and computes a formula-based allowance for performing consumer and commercial lending-related commitments. These are computed using a methodology similar to that used for the commercial loan portfolio, modified for expected maturities and probabilities of drawdown. The reserve for lending-related commitments was $2.0 million at both March 31, 2018 and December 31, 2017, respectively, and is included in other liabilities in the accompanying consolidated balance sheets. Loss Contingencies From time to time the Company is also party to various legal proceedings arising in the ordinary course of business. Management does not believe that loss contingencies, if any, arising from any such pending litigation and regulatory matters will have a material adverse effect on the consolidated financial position or liquidity of the Company.

Accounting Standards Update Acc

Accounting Standards Update Accounting Standards Update	3 Months Ended
	Mar. 31, 2018
Accounting Changes and Error Corrections [Abstract]
Accounting Standards Update	Note 13 - Accounting Standards Updates Effect of Newly Issued But Not Yet Effective Accounting Standards ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Since these amendments only relate to the reclassification of the income tax effects of the Tax Cuts and Jobs Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. These amendments require that an entity disclose a description of the accounting policy for releasing income tax effects from accumulated other comprehensive income. These amendments are effective for fiscal years beginning after December 15, 2018, and interim periods within those years. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. These amendments should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. Rather than adjusting income tax expense for the differences as the effect of the change in the U.S. federal corporate income tax rates are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment. The Company adopted this guidance during the first quarter of 2018, which resulted in a reclassification of $282,000 from Accumulated Other Comprehensive Income to Retained Earnings. The Company's policy is to release material stranded tax effects on a specific identification basis. ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 permits hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk. It also changes the guidance for designating fair value hedges of interest rate risk and for measuring the change in fair value of the hedged item in fair value hedges of interest rate risk. In addition to the amendments to the designation and measurement guidance for qualifying hedging relationships, the amendments in this ASU also align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. For public entities, these amendments are effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early application is permitted. The Company has analyzed its hedges and determined that the amendments in this ASU are currently not applicable to any hedge relationships in effect and therefore, no transition adjustment is necessary. The Company has adopted this ASU during the first quarter of 2018 and will apply the updates to hedging instruments on a go forward basis. ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 amends 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 probable initial recognition threshold in current GAAP 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. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however Topic 326 will require that credit losses be presented as an allowance rather than as a write-down. This Accounting Standards Update affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. The Company anticipates a significant change in the processes and procedures to calculate the loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The Company expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses at the beginning of the first reporting period in which the new standard is effective, but cannot yet determine the magnitude of any such one-time adjustment or the overall impact on our results of operations, financial position or disclosures. However, the Company has begun developing processes and procedures to ensure we are fully compliant at the required adoption date. Among other things, the Company has initiated data gathering and assessment to support forecasting of asset quality, loan balances, and portfolio net charge-offs and developing asset quality forecast models in preparation for the implementation of this standard. For public business entities that are Securities and Exchange Commission filers, the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company continues to evaluate the impact of this ASU on the consolidated financial statements and disclosures. ASU No. 2016-02, Leases (Topic 842). ASU 2016-02 requires lessees to put most leases on their balance sheets but recognize expenses in the income statement in a manner similar to current accounting treatment. This ASU changes the guidance on sale-leaseback transactions, initial direct costs and lease execution costs, and, for lessors, modifies the classification criteria and the accounting for sales-type and direct financing leases. For public business entities, this ASU is effective for annual periods beginning after December 15, 2018, and interim periods therein. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The Company is evaluating the impact of this ASU on the consolidated financial statements and disclosures.

Subsequent Events

Subsequent Events	3 Months Ended
	Mar. 31, 2018
Subsequent Events [Abstract]
Subsequent Events	Note 14 - Subsequent Events On April 2, 2018, together with Thomas & Farr Agency, LLC, the Company's indirect wholly-owned insurance agency subsidiary, the Company entered into a definitive agreement to purchase substantially all of the assets of a general insurance agency headquartered in Monroe, Louisiana at an estimated cost of $9.5 million . If completed, the acquisition would expand the existing footprint served by the Company's insurance agency platform and provide greater service to customers in all of its markets. On May 10, 2018, the Company completed the initial public offering of its common stock at a price to the public of $34.00 per share. The Company issued 3,045,426 shares in the offering, including 545,426 shares sold at the option of the underwriters, and certain selling shareholders sold 1,136,176 shares in the offering. The Company received net proceeds of approximately $95.2 million in the offering. The Company's common stock became eligible for trading on May 9, 2018 on the NASDAQ Global Select Market under the symbol “OBNK.”

Significant Accounting Polici23

Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Consolidation	The condensed consolidated financial statements include the accounts of the Company and all other entities in which the Company has a controlling financial interest, including the Bank and Davison Insurance Agency, LLC ("Davison Insurance"), and Davison Insurance’s wholly owned subsidiary, Thomas & Farr Agency, LLC (“T&F”). These condensed consolidated interim financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("US GAAP") and with the rules and regulations of the Securities and Exchange Commission for interim financial reporting. Accordingly, they do not include all of the information and footnotes required by US GAAP for complete financial statements. In the opinion of management, all normal and recurring adjustments which are considered necessary to fairly present the results for the interim periods presented have been included.
Use of Estimates	Use of Estimates : The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from those estimates.
Revenue Recognition	Revenue Recognition: On January 1, 2018, the Company adopted Accounting Standards Update "ASU" No. 2014-09, " Revenue from Contracts with Customers " ( Topic 606 ), which outlines a single comprehensive revenue recognition model for entities to follow in accounting for revenue from contracts with customers. The implementation of this new guidance did not have a material impact on the measurement or recognition of revenue and no cumulative effect adjustment was recorded to opening retained earnings. Results for reporting periods beginning after January 1, 2018 are presented under Topic 606, while prior period amounts were not adjusted and continue to be reported in accordance with the Company's historic accounting under Topic 605. The majority of the Company's revenue is generated from sources outside the scope of Topic 606. Interest and fees on loans, income from investment securities and mortgage banking revenue are all outside the scope of Topic 606 and are recorded in adherence with US GAAP. Service charges and fees on deposit accounts, credit card interchange insurance commission and fee income, as well as gains and losses on the sale of other assets including other real estate owned (“OREO”) are within the scope of Topic 606; however, the recognition of these revenue streams did not change significantly upon adoption of Topic 606. Descriptions of the Company's revenue generating activities that are within the scope of Topic 606 are described below. Service charges and fees on deposit accounts Service charges and fees on deposit accounts are primarily comprised of maintenance fees, service fees, stop payment and non-sufficient funds fees. The Company's performance obligation for service fees or other fees covering a period of time are generally satisfied, and related revenue recognized, over the period in which the service is provided. The Company's performance obligation for transactional-based fees are generally satisfied, and related revenue recognized, at a point in time. Insurance commission and fee income The Company earns commission income through production on behalf of insurance carriers and also earns fee income by providing complementary services such as collection of premiums. In most instances the Company considers the performance obligation to be complete at the time the service was rendered. Credit card interchange income The Company records credit card interchange income at a point in time as card transactions occur. The Company's performance obligation for these transactions is deemed to have occurred upon completion of each transaction. The amounts are included as a component of other income in the consolidated statements of income. Gain or loss on sale of other assets and OREO In the normal course of business, the Company recognizes the sale on other assets and OREO, along with any gain or loss, when control of the property transfers to the buyer through an executed contractual agreement. The transaction price is fixed, and on occasion the Company will finance a portion of the purchase price of the transferred asset.
Effect of Newly Issued But Not Yet Effective Accounting Standards	Effect of Newly Issued But Not Yet Effective Accounting Standards ASU No. 2018-02, Income Statement - Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income. The amendments in this update allow a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act. Since these amendments only relate to the reclassification of the income tax effects of the Tax Cuts and Jobs Act, the underlying guidance that requires that the effect of a change in tax laws or rates be included in income from continuing operations is not affected. These amendments require that an entity disclose a description of the accounting policy for releasing income tax effects from accumulated other comprehensive income. These amendments are effective for fiscal years beginning after December 15, 2018, and interim periods within those years. Early adoption is permitted, including adoption in any interim period, for reporting periods for which financial statements have not yet been issued. These amendments should be applied either in the period of adoption or retrospectively to each period in which the effect of the change in the U.S. federal corporate income tax rate in the Tax Cuts and Jobs Act is recognized. Rather than adjusting income tax expense for the differences as the effect of the change in the U.S. federal corporate income tax rates are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment. The Company adopted this guidance during the first quarter of 2018, which resulted in a reclassification of $282,000 from Accumulated Other Comprehensive Income to Retained Earnings. The Company's policy is to release material stranded tax effects on a specific identification basis. ASU No. 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Accounting for Hedging Activities. ASU 2017-12 permits hedge accounting for risk components in hedging relationships involving nonfinancial risk and interest rate risk. It also changes the guidance for designating fair value hedges of interest rate risk and for measuring the change in fair value of the hedged item in fair value hedges of interest rate risk. In addition to the amendments to the designation and measurement guidance for qualifying hedging relationships, the amendments in this ASU also align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. This ASU requires an entity to present the earnings effect of the hedging instrument in the same income statement line item in which the earnings effect of the hedged item is reported. For public entities, these amendments are effective for fiscal years beginning after December 15, 2018 and interim periods within those fiscal years. Early application is permitted. The Company has analyzed its hedges and determined that the amendments in this ASU are currently not applicable to any hedge relationships in effect and therefore, no transition adjustment is necessary. The Company has adopted this ASU during the first quarter of 2018 and will apply the updates to hedging instruments on a go forward basis. ASU No. 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 amends 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 probable initial recognition threshold in current GAAP 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. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however Topic 326 will require that credit losses be presented as an allowance rather than as a write-down. This Accounting Standards Update affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. The Company anticipates a significant change in the processes and procedures to calculate the loan losses, including changes in assumptions and estimates to consider expected credit losses over the life of the loan versus the current accounting practice that utilizes the incurred loss model. The Company expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses at the beginning of the first reporting period in which the new standard is effective, but cannot yet determine the magnitude of any such one-time adjustment or the overall impact on our results of operations, financial position or disclosures. However, the Company has begun developing processes and procedures to ensure we are fully compliant at the required adoption date. Among other things, the Company has initiated data gathering and assessment to support forecasting of asset quality, loan balances, and portfolio net charge-offs and developing asset quality forecast models in preparation for the implementation of this standard. For public business entities that are Securities and Exchange Commission filers, the amendments in the update are effective for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. The Company continues to evaluate the impact of this ASU on the consolidated financial statements and disclosures. ASU No. 2016-02, Leases (Topic 842). ASU 2016-02 requires lessees to put most leases on their balance sheets but recognize expenses in the income statement in a manner similar to current accounting treatment. This ASU changes the guidance on sale-leaseback transactions, initial direct costs and lease execution costs, and, for lessors, modifies the classification criteria and the accounting for sales-type and direct financing leases. For public business entities, this ASU is effective for annual periods beginning after December 15, 2018, and interim periods therein. Entities are required to use a modified retrospective approach for leases that exist or are entered into after the beginning of the earliest comparative period in the financial statements. The Company is evaluating the impact of this ASU on the consolidated financial statements and disclosures.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2018
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three months ended March 31, (Dollars in thousands, except per share data) 2018 2017 Basic earnings per common share Net income $ 13,407 $ 7,247 Less: Dividends to preferred stock 1,115 1,115 Net income allocated to participating stockholders (1) 553 267 Net income available to common stockholders $ 11,739 $ 5,865 Weighted average common shares outstanding (2) 19,459,278 19,404,491 Basic earnings per common share $ 0.60 $ 0.30 Diluted earnings per common share Diluted earnings applicable to common stockholders (3) $ 11,771 $ 5,886 Weighted average diluted common shares outstanding: Weighted average common shares outstanding (2) 19,459,278 19,404,491 Dilutive effect of common stock options 216,195 190,782 Weighted average diluted common shares outstanding 19,675,473 19,595,273 Diluted earnings per common share $ 0.60 $ 0.30 ____________________________ (1) Participating stockholders include those that hold certain share-based payment awards that contain nonforfeitable rights to dividends or dividend equivalents. Such shares or units are considered participating securities (i.e., nonvested restricted stock grants). Additionally, Series D preferred stockholders are participating stockholders as those shares participate in dividends with common shares on a one for one basis. Net income allocated to participating stockholders does not include dividends paid for preferred stock. (2) Weighted average common shares outstanding exclude average unearned restricted shares in the computation of basic earnings per share. Under the two-class method, unearned restricted shares are included in the computation of diluted earnings per share; however, depending on nuances of the computation, they may or may not affect the number of weighted average diluted common shares outstanding. Unearned restricted shares are considered issued and therefore included as part of total issued shares disclosed on the consolidated balance sheets. (3) Net income allocated to common stockholders for basic and diluted earnings per share may differ under the two-class method as a result of adding common stock equivalents for options to dilutive shares outstanding, which alters the ratio used to allocate earnings to common stockholders and participating securities for the purposes of calculating diluted earnings per share.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2018
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 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 Gross Gross Unrealized Losses Fair March 31, 2018 Available for sale: State and municipal securities $ 124,889 $ 2,621 $ (289 ) $ 127,221 Corporate bonds 3,000 115 — 3,115 Residential mortgage-backed securities 105,456 189 (2,204 ) 103,441 Residential collateralized mortgage obligations 184,648 67 (4,335 ) 180,380 Total $ 417,993 $ 2,992 $ (6,828 ) $ 414,157 Held to maturity: State and municipal securities $ 19,860 $ — $ (2 ) $ 19,858 Securities carried at fair value through income: State and municipal securities (1) $ 11,918 $ — $ — $ 11,723 December 31, 2017 Available for sale: State and municipal securities $ 125,909 $ 4,104 $ (35 ) $ 129,978 Corporate bonds 3,000 136 — 3,136 Residential mortgage-backed securities 105,132 492 (595 ) 105,029 Residential collateralized mortgage obligations 168,645 262 (2,518 ) 166,389 Total $ 402,686 $ 4,994 $ (3,148 ) $ 404,532 Held to maturity: State and municipal securities $ 20,188 $ 77 $ — $ 20,265 Securities carried at fair value through income: State and municipal securities (1) $ 11,918 $ — $ — $ 12,033 ____________________________ (1) Securities carried at fair value through income have no unrealized gains of losses at the balance sheet date as all changes in value have been recognized in the consolidated statements of income. See Note 5 - Fair Value of Financial Instruments for more information.
Schedule of Securities with Unrealized Loss	Securities with unrealized losses at March 31, 2018 and December 31, 2017, aggregated by investment category and those individual securities have been in a continuous unrealized loss position under and over 12 months were as follows: (Dollars in thousands) Less than 12 Months 12 Months or More Total March 31, 2018 Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss Available for sale: State and municipal securities $ 29,828 $ (247 ) $ 1,190 $ (42 ) $ 31,018 $ (289 ) Residential mortgage-backed securities 68,433 (1,435 ) 19,072 (769 ) 87,505 (2,204 ) Residential collateralized mortgage obligations 113,359 (1,772 ) 57,473 (2,563 ) 170,832 (4,335 ) Total $ 211,620 $ (3,454 ) $ 77,735 $ (3,374 ) $ 289,355 $ (6,828 ) Held to maturity: State and municipal securities $ 14,635 $ (2 ) $ — $ — $ 14,635 $ (2 ) December 31, 2017 Available for sale: State and municipal securities $ 2,114 $ (5 ) $ 1,210 $ (30 ) $ 3,324 $ (35 ) Residential mortgage-backed securities 46,018 (198 ) 20,233 (397 ) 66,251 (595 ) Residential collateralized mortgage obligations 70,788 (641 ) 60,622 (1,877 ) 131,410 (2,518 ) Total $ 118,920 $ (844 ) $ 82,065 $ (2,304 ) $ 200,985 $ (3,148 ) Held to maturity: State and municipal securities $ — $ — $ — $ — $ — $ —
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, 2018, 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, 2018 Amortized Cost Fair Value Amortized Cost Fair Value Due in one year or less $ — $ — $ 2,905 $ 2,920 Due after one year through five years 14,637 14,635 27,718 28,271 Due after five years through ten years — — 84,633 86,216 Due after ten years 5,223 5,223 12,633 12,929 Residential mortgage-backed securities — — 105,456 103,441 Residential collateralized mortgage obligations — — 184,648 180,380 Total $ 19,860 $ 19,858 $ 417,993 $ 414,157
Securities Pledged as Collateral	The following table presents carrying amounts of securities pledged as collateral for deposits and repurchase agreements for the period ends presented. (Dollars in thousands) March 31, 2018 December 31, 2017 Carrying value of securities pledged to secure public deposits $ 256,224 $ 276,319 Carrying value of securities pledged to repurchase agreements $ 35,669 $ 36,685

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Schedule of Loans	Loans consist of the following: (Dollars in thousands) March 31, 2018 December 31, 2017 Loans held for sale $ 48,988 $ 65,343 Loans held for investment: Loans secured by real estate: Commercial real estate $ 1,096,948 $ 1,083,275 Construction/land/land development 340,684 322,404 Residential real estate 583,461 570,583 Total real estate 2,021,093 1,976,262 Commercial and industrial 1,012,760 989,220 Mortgage warehouse lines of credit 191,154 255,044 Consumer 20,985 20,505 Total loans held for investment (1) 3,245,992 3,241,031 Less: Allowance for loan losses 34,132 37,083 Net loans held for investment $ 3,211,860 $ 3,203,948 ____________________________ (1) Presented net of net deferred loan fees of $1.5 million and $1.0 million at March 31, 2018 and December 31, 2017, respectively.
Recorded Investment in Loans by Credit Quality Indicator	The following is a summary description of the Company's internal risk ratings: • Pass (1-6) Loans within this risk rating are further categorized as follows: Minimal risk (1) Well-collateralized by cash equivalent instruments held by the Bank. Moderate risk (2) Borrowers with excellent asset quality and liquidity. Borrowers' capitalization and liquidity exceed industry norms. Borrowers in this category have significant levels of liquid assets and have a low level of leverage. Better than average risk (3) Borrowers with strong financial strength and excellent liquidity that consistently demonstrate strong operating performance. Borrowers in this category generally have a sizable net worth that can be converted into liquid assets within 12 months. Average risk (4) Borrowers with sound credit quality and financial performance, including liquidity. Borrowers are supported by sufficient cash flow coverage generated through operations across the full business cycle. Marginally acceptable risk (5) Loans generally meet minimum requirements for an acceptable loan in accordance with lending policy, but possess one or more attributes that cause the overall risk profile to be higher than the majority of newly approved loans. Watch (6) A passing loan with one or more factors that identify a potential weakness in the overall ability of the borrower to repay the loan. These weaknesses are generally mitigated by other factors that reduce the risk of delinquency or loss. • Special Mention (7) This grade is intended to be temporary and includes borrowers whose credit quality have deteriorated and is at risk of further decline. • Substandard (8) This grade includes "Substandard" loans, in accordance with 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, in accordance with 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 in accordance with regulatory guidelines. Loss loans are charged-off or written-down when repayment is not expected. The recorded investment in loans by credit quality indicator at March 31, 2018 and December 31, 2017, excluding loans held for sale, were as follows: March 31, 2018 (Dollars in thousands) Pass Special mention Substandard Doubtful Loss Total Loans secured by real estate: Commercial real estate $ 1,070,984 $ 5,348 $ 20,616 $ — $ — $ 1,096,948 Construction/land/land development 337,148 165 3,371 — — 340,684 Residential real estate 574,470 33 8,958 — — 583,461 Total real estate 1,982,602 5,546 32,945 — — 2,021,093 Commercial and industrial 945,417 9,652 57,691 — — 1,012,760 Mortgage warehouse lines of credit 191,154 — — — — 191,154 Consumer 20,636 — 349 — — 20,985 Total loans held for investment $ 3,139,809 $ 15,198 $ 90,985 $ — $ — $ 3,245,992 December 31, 2017 (Dollars in thousands) Pass Special mention Substandard Doubtful Loss Total Loans secured by real estate: Commercial real estate $ 1,055,911 $ 7,798 $ 19,566 $ — $ — $ 1,083,275 Construction/land/land development 318,488 170 3,746 — — 322,404 Residential real estate 560,945 778 8,860 — — 570,583 Total real estate 1,935,344 8,746 32,172 — — 1,976,262 Commercial and industrial 915,111 15,332 58,777 — — 989,220 Mortgage warehouse lines of credit 255,044 — — — — 255,044 Consumer 20,223 — 279 3 — 20,505 Total loans held for investment $ 3,125,722 $ 24,078 $ 91,228 $ 3 $ — $ 3,241,031
Loan Portfolio Aging Analysis	The following tables present the Company’s loan portfolio aging analysis at the dates indicated: March 31, 2018 (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 $ 8,940 $ — $ 844 $ 9,784 $ 1,087,164 $ 1,096,948 $ — Construction/land/land development 1,534 — 558 2,092 338,592 340,684 — Residential real estate 2,917 653 3,428 6,998 576,463 583,461 — Total real estate 13,391 653 4,830 18,874 2,002,219 2,021,093 — Commercial and industrial 1,877 355 7,905 10,137 1,002,623 1,012,760 — Mortgage warehouse lines of credit — — — — 191,154 191,154 — Consumer 136 64 68 268 20,717 20,985 — Total loans held for investment $ 15,404 $ 1,072 $ 12,803 $ 29,279 $ 3,216,713 $ 3,245,992 $ — December 31, 2017 (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 $ 8,427 $ 2,791 $ 1,150 $ 12,368 $ 1,070,907 $ 1,083,275 $ — Construction/land/land development 1,488 172 464 2,124 320,280 322,404 — Residential real estate 2,630 347 3,910 6,887 563,696 570,583 — Total real estate 12,545 3,310 5,524 21,379 1,954,883 1,976,262 — Commercial and industrial 1,517 9,922 8,074 19,513 969,707 989,220 — Mortgage warehouse lines of credit — — — — 255,044 255,044 — Consumer 178 128 74 380 20,125 20,505 — Total loans held for investment $ 14,240 $ 13,360 $ 13,672 $ 41,272 $ 3,199,759 $ 3,241,031 $ —
Allowance for Loan Losses by Portfolio Segment	The following tables detail activity in the allowance for loan losses by portfolio segment. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Three months ended March 31, 2018 (Dollars in thousands) Beginning balance Charge-offs Recoveries Provision (Benefit) (1) Ending balance Loans secured by real estate: Commercial real estate $ 8,998 $ 9 $ 127 $ 1,028 $ 10,144 Construction/land/land development 2,950 — 1 (244 ) 2,707 Residential real estate 5,807 9 19 (346 ) 5,471 Commercial and industrial 18,831 1,703 174 (1,965 ) 15,337 Mortgage warehouse lines of credit 214 — — (56 ) 158 Consumer 283 17 24 25 315 Total $ 37,083 $ 1,738 $ 345 $ (1,558 ) $ 34,132 ____________________________ (1) The $1.5 million benefit for credit losses on the consolidated statements of income includes a $1.6 million net loan loss benefit and a $34,000 provision for off-balance sheet commitments for the three months ended March 31, 2018. Three months ended March 31, 2017 (Dollars in thousands) Beginning balance Charge-offs Recoveries Provision (Benefit) (1) Ending balance Loans secured by real estate: Commercial real estate $ 8,718 $ — $ 2 $ 250 $ 8,970 Construction/land/land development 2,805 — 1 (320 ) 2,486 Residential real estate 5,003 13 37 856 5,883 Commercial and industrial 33,590 813 149 878 33,804 Mortgage warehouse lines of credit 139 — — (11 ) 128 Consumer 276 22 6 84 344 Total $ 50,531 $ 848 $ 195 $ 1,737 $ 51,615 ____________________________ (1) The $2.8 million provision for credit losses on the consolidated statements of income includes a $1.7 million net loan loss provision and a $1.1 million provision for off-balance sheet commitments for the three months ended March 31, 2017.
Loans Receivable by Method of Impairment Evaluation	The following tables present the balance of loans receivable by method of impairment evaluation at the dates indicated: March 31, 2018 (Dollars in thousands) 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 ended loan balance collectively evaluated for impairment (1) Loans secured by real estate: Commercial real estate $ 1,448 $ 8,696 $ 10,236 $ 1,066,284 Construction/land/land development 4 2,703 1,421 339,263 Residential real estate 28 5,443 7,498 575,963 Commercial and industrial 1,680 13,657 13,349 993,905 Mortgage warehouse lines of credit — 158 — 191,154 Consumer 97 218 264 20,721 Total $ 3,257 $ 30,875 $ 32,768 $ 3,187,290 ____________________________ (1) Excludes $20.4 million and $5.5 million of commercial real estate loans and commercial and industrial loans, respectively, at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information. December 31, 2017 (Dollars in thousands) 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 ended loan balance collectively evaluated for impairment (1) Loans secured by real estate: Commercial real estate $ 312 $ 8,686 $ 4,945 $ 1,057,330 Construction/land/land development 4 2,946 1,963 320,441 Residential real estate 72 5,735 7,915 562,668 Commercial and industrial 4,356 14,475 24,598 959,011 Mortgage warehouse lines of credit — 214 — 255,044 Consumer 63 220 237 20,268 Total $ 4,807 $ 32,276 $ 39,658 $ 3,174,762 ____________________________ (1) Excludes $21.0 million and $5.6 million of commercial real estate loans and commercial and industrial loans, respectively, at fair value, which are not evaluated for impairment due to the fair value option election. See Note 5 - Fair Value of Financial Instruments for more information.
Impaired Loans	The following tables present impaired loans at the dates indicated. No mortgage warehouse lines of credit were impaired at either March 31, 2018 or December 31, 2017. March 31, 2018 (Dollars in thousands) Unpaid contractual principal balance Recorded investment with no allowance Recorded investment with an allowance Total recorded investment Allocation of allowance for loan losses Loans secured by real estate: Commercial real estate $ 11,166 $ 1,973 $ 8,263 $ 10,236 $ 1,448 Construction/land/land development 1,740 1,272 149 1,421 4 Residential real estate 9,656 6,636 862 7,498 28 Total real estate 22,562 9,881 9,274 19,155 1,480 Commercial and industrial 13,815 5,587 7,762 13,349 1,680 Consumer 289 123 141 264 97 Total impaired loans $ 36,666 $ 15,591 $ 17,177 $ 32,768 $ 3,257 December 31, 2017 (Dollars in thousands) Unpaid contractual principal balance Recorded investment with no allowance Recorded investment with an allowance Total recorded investment Allocation of allowance for loan losses Loans secured by real estate: Commercial real estate $ 6,047 $ 1,782 $ 3,163 $ 4,945 $ 312 Construction/land/land development 2,268 1,813 150 1,963 4 Residential real estate 10,024 6,750 1,165 7,915 72 Total real estate 18,339 10,345 4,478 14,823 388 Commercial and industrial 25,212 6,161 18,437 24,598 4,356 Consumer 259 141 96 237 63 Total impaired loans $ 43,810 $ 16,647 $ 23,011 $ 39,658 $ 4,807 The average recorded investment and interest recognized on impaired loans while classified as impaired for the three months ended March 31, 2018 and 2017 were as follows: March 31, 2018 March 31, 2017 (Dollars in thousands) Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized Loans secured by real estate: Commercial real estate $ 9,864 $ 27 $ 6,377 $ 33 Construction/land/land development 1,847 9 1,032 3 Residential real estate 7,665 24 10,065 20 Total real estate 19,376 60 17,474 56 Commercial and industrial 17,717 88 61,183 14 Consumer 256 3 251 2 Total impaired loans $ 37,349 $ 151 $ 78,908 $ 72
Non-performing (Nonaccrual) Loans Held for Investment	Non-performing (nonaccrual) loans held for investment were as follows: (Dollars in thousands) March 31, 2018 December 31, 2017 Loans secured by real estate: Commercial real estate $ 8,851 $ 1,745 Construction/land/land development 1,272 1,097 Residential real estate 7,226 7,166 Total real estate 17,349 10,008 Commercial and industrial 9,312 13,512 Consumer 349 282 Total nonaccrual loans $ 27,010 $ 23,802
Loans Classified as Troubled Debt Restructurings (TDRs)	The following is a summary of loans classified as troubled debt restructurings ("TDRs"). (Dollars in thousands) March 31, 2018 December 31, 2017 TDRs Nonaccrual TDRs $ 2,158 $ 2,622 Performing TDRs 6,051 14,234 Total $ 8,209 $ 16,856 The following table presents the pre and post-modification balances of TDR modifications that occurred during the March 31, 2018 period. There were no loans modified as a TDR during the three months ended March 31, 2017. Three months ended March 31, 2018 (Dollars in thousands) Number of loans restructured Pre-modification recorded balance Term Concessions Interest Rate Concessions Combination Total Modifications Loans secured by real estate: Residential real estate 1 $ 94 $ — $ — $ 91 $ 91

Fair Value of Financial Instr27

Fair Value of Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
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, 2018 and December 31, 2017, segregated by the level of valuation inputs within the fair value hierarchy utilized to measure fair value. There were no changes in the valuation techniques during either period. March 31, 2018 (Dollars in thousands) Level 1 Level 2 Level 3 Total State and municipal securities $ — $ 87,260 $ 39,961 $ 127,221 Corporate bonds — 3,115 — 3,115 Residential mortgage-backed securities — 103,441 — 103,441 Residential collateralized mortgage obligations — 180,380 — 180,380 Securities available for sale — 374,196 39,961 414,157 Securities carried at fair value through income — — 11,723 11,723 Loans held for sale — 19,301 — 19,301 Loans at fair value — — 25,934 25,934 Mortgage servicing rights — — 25,999 25,999 Other assets - derivatives — 2,716 — 2,716 Total recurring fair value measurements - assets $ — $ 396,213 $ 103,617 $ 499,830 Other liabilities - derivatives $ — $ (1,898 ) $ — $ (1,898 ) Total recurring fair value measurements - liabilities $ — $ (1,898 ) $ — $ (1,898 ) December 31, 2017 (Dollars in thousands) Level 1 Level 2 Level 3 Total State and municipal securities $ — $ 87,963 $ 42,015 $ 129,978 Corporate bonds — 3,136 — 3,136 Residential mortgage-backed securities — 105,029 — 105,029 Residential collateralized mortgage obligations — 166,389 — 166,389 Securities available for sale — 362,517 42,015 404,532 Securities carried at fair value through income — — 12,033 12,033 Loans held for sale — 32,768 — 32,768 Loans at fair value — — 26,611 26,611 Mortgage servicing rights — — 24,182 24,182 Other assets - derivatives — 3,146 — 3,146 Total recurring fair value measurements - assets $ — $ 398,431 $ 104,841 $ 503,272 Other liabilities - derivatives $ — $ (3,320 ) $ — $ (3,320 ) Total recurring fair value measurements - liabilities $ — $ (3,320 ) $ — $ (3,320 )
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, 2018 and 2017 are summarized as follows: (Dollars in thousands) Loans at Fair Value MSRs Securities Available for Sale Securities at FV Through Income Balance at January 1, 2018 $ 26,611 $ 24,182 $ 42,015 $ 12,033 Gain (loss) recognized in earnings: Mortgage banking revenue — 1,274 — — Other noninterest income (295 ) — — (310 ) Gain (loss) recognized in AOCI — — (727 ) — Purchases, issuances, sales and settlements: Originations 543 Purchases — — 259 — Settlements (382 ) — (1,586 ) — Balance at March 31, 2018 $ 25,934 $ 25,999 $ 39,961 $ 11,723 Balance at January 1, 2017 $ 33,693 $ 29,385 $ 43,858 $ 12,511 Gain (loss) recognized in earnings: Mortgage banking revenue — (1,131 ) — — Other noninterest income (165 ) — — (97 ) Gain (loss) recognized in AOCI — — 2,151 — Purchases, issuances, sales, and settlements: Originations — 628 — — Purchases — — 190 — Sales (2,516 ) — — — Settlements (1,481 ) — (1,524 ) — Balance at March 31, 2017 $ 29,531 $ 28,882 $ 44,675 $ 12,414
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	Changes in the fair value of assets for which the Company elected the fair value option are classified in the income statement line items reflected in the following table: Three months ended March 31, (Dollars in thousands) 2018 2017 Changes in fair value included in noninterest income: Mortgage banking revenue $ (324 ) $ 91 Other income: Loans at fair value held for investment $ (295 ) $ (165 ) Securities carried at fair value through income (310 ) (97 ) Total impact on other income (605 ) (262 ) Total fair value option impact on noninterest income $ (929 ) $ (171 ) 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, 2018 (Dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale (1) $ 19,301 $ 19,073 $ 228 Commercial and industrial loans held for investment (2) 5,506 5,506 — Commercial real estate loans held for investment (2) 20,428 20,155 273 Securities carried at fair value through income 11,723 11,918 (195 ) Total $ 56,958 $ 56,652 $ 306 ____________________________ (1) $246,000 of loans were past due 90 days or more at March 31, 2018, and the Company had guarantees receivable from U.S. Government agencies for 100% of this amount. (2) There were no commercial and industrial loans or commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or past due 90 days or more at March 31, 2018. December 31, 2017 (Dollars in thousands) Aggregate Fair Value Aggregate Unpaid Principal Balance Difference Loans held for sale (1) $ 32,768 $ 32,216 $ 552 Commercial and industrial loans held for investment (2) 5,611 5,591 20 Commercial real estate loans held for investment (2) 21,000 20,451 549 Securities carried at fair value through income 12,033 11,918 115 Total $ 71,412 $ 70,176 $ 1,236 ____________________________ (1) $2.4 million of loans were past due 90 days or more at December 31, 2017. Of this balance, the Company had guarantees receivable from U.S. government agencies totaling $1.8 million . (2) There were no commercial and industrial loans or commercial real estate loans for which the fair value had been elected that were designated as nonaccrual or past due 90 days or more at December 31, 2017.
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: March 31, 2018 December 31, 2017 (Dollars in thousands) Financial assets: Carrying Estimated Carrying Value Estimated Fair Value Level 1 inputs: Cash and cash equivalents $ 247,257 $ 247,257 $ 187,187 $ 187,187 Level 2 inputs: Securities held to maturity 19,860 19,858 20,188 20,265 Non-marketable equity securities held in other financial institutions 22,995 22,995 22,967 22,967 Accrued interest and loan fees receivable 11,956 11,956 10,719 10,719 Level 3 inputs: Loans held for investment, net (1) 3,220,058 3,144,110 3,177,337 3,238,872 Financial liabilities: Level 2 inputs: Deposits 3,580,738 3,376,985 3,512,014 3,352,213 FHLB advances and other borrowings 132,224 132,661 144,357 145,330 Junior subordinated debentures 9,625 14,476 9,619 14,132 Accrued interest payable 2,265 2,265 2,424 2,424 ____________________________ (1) Loans held for investment, net does not include $25.9 million or $26.6 million of loans held at fair value at March 31, 2018 or December 31, 2017, respectively.

Mortgage Banking (Tables)

Mortgage Banking (Tables)	3 Months Ended
	Mar. 31, 2018
Mortgage Banking [Abstract]
Mortgage Banking Operations	The following table presents the Company's mortgage banking operations: At and for the three months ended (Dollars in thousands, unaudited) Mortgage banking revenue March 31, 2018 March 31, Origination $ 210 $ 227 Gain on sale of loans held for sale 2,024 2,294 Servicing 1,837 2,107 Total gross mortgage revenue 4,071 4,628 Mortgage derivatives gain (loss) (539 ) 506 MSR change due to payoffs and paydowns (784 ) (952 ) MSR and hedge fair value adjustment (379 ) (90 ) Gain (loss) on MSR sale (1) 25 — Mortgage banking revenue $ 2,394 $ 4,092 Origination volume $ 74,938 $ 102,723 Mortgage loans sold 84,528 114,563 Outstanding principal balance of mortgage loans serviced for others 2,167,185 2,483,423 ___________________________ (1) Amount shown during the three months ended March 31, 2018 reflects final settlement on a loan servicing portfolio sold during the three months ended December 31, 2017.
Schedule of Activity in Mortgages Servicing Rights (MSRs)	Activity in MSRs was as follows: Three months ended March 31, (Dollars in thousands) 2018 2017 Balance at beginning of period $ 24,182 $ 29,385 Origination of servicing rights 543 628 Change in fair value, including amortization 1,274 (1,131 ) Balance at end of period $ 25,999 $ 28,882
Significant Assumptions Used to Value Mortgage Servicing Rights	The significant assumptions used to value MSRs were as follows: March 31, 2018 December 31, 2017 Prepayment speed 8.78 % 10.80 % Discount rate 9.42 % 9.33 %

Derivative Financial Instrume29

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2018
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 balance sheets at March 31, 2018 and December 31, 2017, 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, 2018 and 2017: Notional Amounts (1) Fair Values (Dollars in thousands) March 31, 2018 December 31, 2017 March 31, 2018 December 31, 2017 Derivatives designated as cash flow hedging instruments: Interest rate swaps included in other assets $ 10,500 $ 10,500 $ 222 $ 41 Derivatives not designated as hedging instruments: Interest rate swaps included in other assets $ 121,638 $ 132,959 $ 1,365 $ 2,314 Interest rate swaps included in other liabilities 142,398 159,479 (1,749 ) (3,221 ) Forward commitments to purchase mortgage-backed securities included in other assets (liabilities) 100,000 160,000 453 (50 ) Forward commitments to sell residential mortgage loans included in other assets (liabilities) 41,850 57,400 (149 ) (49 ) Interest rate-lock commitments on residential mortgage loans included in other assets 32,320 37,072 676 791 $ 438,206 $ 546,910 $ 596 $ (215 ) ____________________________ (1) Notional or contractual amounts, which represent the extent of involvement in the derivatives market, are used to determine the contractual cash flows required in accordance with the terms of the agreement. These amounts are typically not exchanged, significantly exceed amounts subject to credit or market risk and are not reflected in the consolidated balance sheets.
Weighted-average Rates Paid and Received for Interest Rate Swaps	The weighted-average rates paid and received for interest rate swaps at March 31, 2018 were as follows: Weighted-Average Interest Rate Paid Interest Rate Received Interest rate swaps: Cash flow hedges 4.81 % 4.64 % Non-hedging interest rate swaps - financial institution counterparties 4.78 3.83 Non-hedging interest rate swaps - customer counterparties 3.78 4.76
Gains and Losses Recognized on Derivative Instruments Not Designated as Hedging Instruments	Gains and losses recognized on derivative instruments not designated as hedging instruments are as follows: (Dollars in thousands) Three months ended March 31, Derivatives not designated as hedging instruments: 2018 2017 Amount of gain (loss) recognized in mortgage banking revenue $ (1,661 ) $ 389 Amount of gain recognized in other non-interest income 523 266

Stock and Incentive Compensat30

Stock and Incentive Compensation Plans (Tables)	3 Months Ended
	Mar. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Share-based Compensation Cost Charged to Income	Share-based compensation cost charged to income for the three months ended March 31, 2018 and 2017 is presented below: Three months ended March 31, (Dollars in thousands) 2018 2017 Restricted stock $ 194 $ 247 Stock options (1) — (30 ) Total stock compensation expense $ 194 $ 217 Related tax benefits recognized in net income $ 41 $ 76 ____________________________ (1) Stock option expense for the three months ended March 31, 2017 included expense reversal related to 5,546 common stock options forfeited during the period. All remaining stock options became fully vested during the first quarter of 2017 with no further expense incurred after February 2017.
Time-vested Award Activity	The following table summarizes the Company's time-vested award activity: Three months ended March 31, 2018 2017 Shares Weighted Average Grant-Date Fair Value Shares Weighted Average Grant-Date Fair Value Nonvested shares, January 1, 61,293 $ 24.61 84,019 $ 24.22 Granted 7,334 25.41 1,137 22.00 Vested (4,397 ) 24.91 (13,976 ) 21.23 Forfeited — — (3,524 ) 24.09 Nonvested shares, March 31, 64,230 $ 24.68 67,656 $ 22.95
Stock Option Activity	The table below summarizes the status of the Company's stock options and changes during the three months ended March 31, 2018 and 2017. (Dollars in thousands, except per share data) Number of Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value Three months ended March 31, 2017 Outstanding at January 1, 2017 358,638 $ 11.37 7.79 $ 3,844 Forfeited (5,546 ) 23.89 Outstanding at March 31, 2017 353,092 $ 11.17 7.50 $ 3,923 Three months ended March 31, 2018 Outstanding at January 1, 2018 319,500 $ 10.65 7.07 $ 4,840 Outstanding at March 31, 2018 319,500 $ 10.65 6.82 $ 4,843 Exercisable at March 31, 2018 319,500 $ 10.65 6.82 $ 4,843

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Schedule of Provision for Income Taxes	The provision for income taxes is as follows: Three months ended March 31, (Dollars in thousands) 2018 2017 Federal income taxes: Current $ 2,175 $ 2,382 Deferred 501 50 State income taxes: Current 76 161 Deferred 32 (13 ) Income tax expense $ 2,784 $ 2,580 Effective income tax rate 17.2 % 26.3 %

Accumulated Other Comprehensi32

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Accumulated other comprehensive income ("AOCI") 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 gains on AFS securities Cash flow hedges Accumulated other comprehensive income Balance at January 1, 2018 $ 1,280 $ 27 $ 1,307 Net change (4,492 ) 144 (4,348 ) Reclassification of tax effects related to the adoption of ASU 2018-02 (1) : Current (293 ) 17 (276 ) Deferred 569 (11 ) 558 Balance at March 31, 2018 $ (2,936 ) $ 177 $ (2,759 ) Balance at January 1, 2017 $ 3,505 $ (42 ) $ 3,463 Net change 278 21 299 Balance at March 31, 2017 $ 3,783 $ (21 ) $ 3,762 ____________________________ (1) During the first quarter of 2018 the Company adopted ASU 2018-02. The ASU was issued by the Financial Accounting Standards Board ("FASB") in February 2018 to address the issue of other comprehensive income or loss that became stranded in AOCI as a result of the re-measurement of an entity’s deferred income tax assets and liabilities following the reduction of the U.S. federal corporate tax rate from 35% to 21% pursuant to the enactment of the Tax Cuts and Jobs Act in December 2017. The Company also had certain current tax amounts stranded AOCI that resulted from a tax accounting election to tax net gains and losses on AFS securities and cash flow hedges as current items beginning in 2016. The Company reclassifies the taxes from AOCI to earnings as the individual securities and hedges are realized. Due to the change in corporate tax rates, the Company had certain net gains and losses taxed at the 35% rate reflected in AOCI. As these transactions are realized over time, they will flow through income tax expense at the 21% rate. Rather than adjusting income tax expense for the difference as each of these securities and instruments are realized, the Company elected to adjust the difference (stranded tax effect) to retained earnings, consistent with the treatment of the deferred tax adjustment.

Capital and Regulatory Matters

Capital and Regulatory Matters (Tables)	3 Months Ended
	Mar. 31, 2018
Banking and Thrift [Abstract]
Actual Capital Amounts and Ratios	The actual capital amounts and ratios of the Company and Bank at March 31, 2018 and December 31, 2017, are presented in the following table: (Dollars in thousands) Actual Minimum Capital Required - Basel III Fully Phased-In To be Well Capitalized Under Prompt Corrective Action Provisions March 31, 2018 Amount Ratio Amount Ratio Amount Ratio Common Equity Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. $ 371,112 9.68 % $ 268,319 7.00 % N/A N/A Origin Bank 426,583 11.16 267,688 7.00 $ 248,567 6.50 % Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. 444,246 11.59 325,817 8.50 N/A N/A Origin Bank 426,583 11.16 325,049 8.50 305,929 8.00 Total Capital to Risk-Weighted Assets Origin Bancorp, Inc. 480,428 12.53 402,481 10.50 N/A N/A Origin Bank 462,765 12.10 401,530 10.50 382,409 10.00 Leverage Ratio Origin Bancorp, Inc. 444,246 10.65 166,790 4.00 N/A N/A Origin Bank 426,583 10.25 166,478 4.00 208,097 5.00 December 31, 2017 Common Equity Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. $ 360,069 9.35 % $ 269,570 7.00 % N/A N/A Origin Bank 416,175 10.82 269,244 7.00 $ 250,012 6.50 % Tier 1 Capital to Risk-Weighted Assets Origin Bancorp, Inc. 433,338 11.25 327,411 8.50 N/A N/A Origin Bank 416,175 10.82 326,940 8.50 307,708 8.00 Total Capital to Risk-Weighted Assets Origin Bancorp, Inc. 472,437 12.26 404,616 10.50 N/A N/A Origin Bank 455,274 11.84 403,748 10.50 384,522 10.00 Leverage Ratio Origin Bancorp, Inc. 433,338 10.53 164,611 4.00 N/A N/A Origin Bank 416,175 10.13 164,334 4.00 205,418 5.00

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Off-Balance Sheet Financial Instruments	These off-balance sheet financial instruments are summarized below: (Dollars in thousands) March 31, 2018 December 31, 2017 Commitments to extend credit $ 1,047,196 $ 1,068,088 Standby letters of credit 80,991 79,893

Significant Accounting Polici35

Significant Accounting Policies (Details)	Mar. 31, 2018center
Accounting Policies [Abstract]
Number of banking centers	41

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Basic earnings per common share
Net income	$ 13,407	$ 7,247
Less: Dividends to preferred stock	1,115	1,115
Net income allocated to participating stockholders	553	267
Net income available to common stockholders	$ 11,739	$ 5,865
Weighted average common shares outstanding (in shares)	19,459,278	19,404,491
Basic earnings per common share ($ per share)	$ 0.60	$ 0.30
Diluted earnings per common share
Diluted earnings applicable to common stockholders (in shares)	$ 11,771	$ 5,886
Weighted average diluted common shares outstanding
Weighted average common shares outstanding (in shares)	19,459,278	19,404,491
Dilutive effect of common stock options (in shares)	216,195	190,782
Weighted average diluted common shares outstanding (in shares)	19,675,473	19,595,273
Diluted earnings per common share ($ per share)	$ 0.60	$ 0.30

Securities - Amortized Cost and

Securities - Amortized Cost and Estimated Fair Value of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available for sale
Available for sale, amortized cost	$ 417,993	$ 402,686
Available for sale, gross unrealized gains	2,992	4,994
Available for sale, gross unrealized losses	(6,828)	(3,148)
Available for sale, fair value	414,157	404,532
Held to maturity
Held to maturity, amortized cost	19,860	20,188
Securities held to maturity, fair value	19,858	20,265
Securities carried at fair value through income, amortized cost	11,918	11,918
Securities carried at fair value through income, fair value	11,723	12,033
State and municipal securities
Available for sale
Available for sale, amortized cost	124,889	125,909
Available for sale, gross unrealized gains	2,621	4,104
Available for sale, gross unrealized losses	(289)	(35)
Available for sale, fair value	127,221	129,978
Held to maturity
Held to maturity, amortized cost	19,860	20,188
Held to maturity, gross unrealized gains	0	77
Held to maturity, gross unrealized losses	(2)	0
Securities held to maturity, fair value	19,858	20,265
Corporate bonds
Available for sale
Available for sale, amortized cost	3,000	3,000
Available for sale, gross unrealized gains	115	136
Available for sale, gross unrealized losses	0	0
Available for sale, fair value	3,115	3,136
Residential mortgage-backed securities
Available for sale
Available for sale, amortized cost	105,456	105,132
Available for sale, gross unrealized gains	189	492
Available for sale, gross unrealized losses	(2,204)	(595)
Available for sale, fair value	103,441	105,029
Residential collateralized mortgage obligations
Available for sale
Available for sale, amortized cost	184,648	168,645
Available for sale, gross unrealized gains	67	262
Available for sale, gross unrealized losses	(4,335)	(2,518)
Available for sale, fair value	$ 180,380	$ 166,389

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available for sale
Available for sale, continuous unrealized loss position, less than 12 months, fair value	$ 211,620	$ 118,920
Available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	(3,454)	(844)
Available for sale, continuous unrealized loss position, 12 months or more, fair value	77,735	82,065
Available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	(3,374)	(2,304)
Available for sale, continuous unrealized loss position, fair value	289,355	200,985
Available for sale, continuous unrealized loss position, unrealized loss	(6,828)	(3,148)
State and municipal securities
Available for sale
Available for sale, continuous unrealized loss position, less than 12 months, fair value	29,828	2,114
Available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	(247)	(5)
Available for sale, continuous unrealized loss position, 12 months or more, fair value	1,190	1,210
Available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	(42)	(30)
Available for sale, continuous unrealized loss position, fair value	31,018	3,324
Available for sale, continuous unrealized loss position, unrealized loss	(289)	(35)
Held to maturity
Held to maturity, continuous unrealized loss position, less than 12 months, fair value	14,635	0
Held to maturity, continuous unrealized loss position, less than 12 months, unrealized loss	(2)	0
Held to maturity, continuous unrealized loss position, 12 months or longer, fair value	0	0
Held to maturity, continuous unrealized loss position, 12 months or longer, unrealized loss	0	0
Held to maturity, continuous unrealized loss position, fair value	14,635	0
Held to maturity, continuous unrealized loss position, unrealized loss	(2)	0
Residential mortgage-backed securities
Available for sale
Available for sale, continuous unrealized loss position, less than 12 months, fair value	68,433	46,018
Available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	(1,435)	(198)
Available for sale, continuous unrealized loss position, 12 months or more, fair value	19,072	20,233
Available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	(769)	(397)
Available for sale, continuous unrealized loss position, fair value	87,505	66,251
Available for sale, continuous unrealized loss position, unrealized loss	(2,204)	(595)
Residential collateralized mortgage obligations
Available for sale
Available for sale, continuous unrealized loss position, less than 12 months, fair value	113,359	70,788
Available for sale, continuous unrealized loss position, less than 12 months, unrealized loss	(1,772)	(641)
Available for sale, continuous unrealized loss position, 12 months or more, fair value	57,473	60,622
Available for sale, continuous unrealized loss position, 12 months or more, unrealized loss	(2,563)	(1,877)
Available for sale, continuous unrealized loss position, fair value	170,832	131,410
Available for sale, continuous unrealized loss position, unrealized loss	$ (4,335)	$ (2,518)

Securities (Details)

Securities (Details)	Mar. 31, 2018security
Investments, Debt and Equity Securities [Abstract]
Number of securities in an unrealized loss positions (in security)	114

Securities - Contractual Maturi

Securities - Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Held to maturity
Held to maturity, due in one year or less, amortized cost	$ 0
Held to maturity, due after one year through five years, amortized cost	14,637
Held to maturity, due after five years through ten years, amortized cost	0
Held to maturity, due after ten years, amortized cost	5,223
Held to maturity, amortized cost	19,860	$ 20,188
Held to maturity, due in one year or less, fair value	0
Held to maturity, due after one year through five years, fair value	14,635
Held to maturity, due after five years through ten years, fair value	0
Held to maturity, due after ten years, fair value	5,223
Securities held to maturity, fair value	19,858	20,265
Available for sale
Available for sale, due in one year or less, amortized cost	2,905
Available for sale, due after one year through five years, amortized cost	27,718
Available for sale, due after five years through ten years, amortized cost	84,633
Available for sale, due after ten years, amortized cost	12,633
Available for sale, amortized cost	417,993	402,686
Available for sale, due in one year or less, fair value	2,920
Available for sale, due after one year through five years, fair value	28,271
Available for sale, due after five years through ten years, fair value	86,216
Available for sale, due after ten years, fair value	12,929
Available for sale, fair value	414,157	404,532
Residential mortgage-backed securities
Held to maturity
Held to maturity, without single maturity date, amortized cost	0
Held to maturity, without single maturity date, fair value	0
Available for sale
Available for sale, without single maturity date, amortized cost	105,456
Available for sale, amortized cost	105,456	105,132
Available for sale, without single maturity date, fair value	103,441
Available for sale, fair value	103,441	105,029
Residential collateralized mortgage obligations
Held to maturity
Held to maturity, without single maturity date, amortized cost	0
Held to maturity, without single maturity date, fair value	0
Available for sale
Available for sale, without single maturity date, amortized cost	184,648
Available for sale, amortized cost	184,648	168,645
Available for sale, without single maturity date, fair value	180,380
Available for sale, fair value	$ 180,380	$ 166,389

Securities - Securities Pledged

Securities - Securities Pledged as Collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Carrying value of securities pledged to secure public deposits
Schedule of Held-to-maturity Securities [Line Items]
Securities pledged as collateral	$ 256,224	$ 276,319
Carrying value of securities pledged to repurchase agreements
Schedule of Held-to-maturity Securities [Line Items]
Securities pledged as collateral	$ 35,669	$ 36,685

Loans - Schedule of Loans (Deta

Loans - Schedule of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans held for sale	$ 48,988	$ 65,343
Loans held for investment	3,245,992	3,241,031
Less: Allowance for loan losses	34,132	37,083	$ 51,615	$ 50,531
Net loans held for investment	3,211,860	3,203,948
Net deferred loan fees	1,500	1,000
Real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	2,021,093	1,976,262
Real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	1,096,948	1,083,275
Less: Allowance for loan losses	10,144	8,998	8,970	8,718
Real estate | Construction/land/land development
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	340,684	322,404
Less: Allowance for loan losses	2,707	2,950	2,486	2,805
Real estate | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	583,461	570,583
Less: Allowance for loan losses	5,471	5,807	5,883	5,003
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	1,012,760	989,220
Less: Allowance for loan losses	15,337	18,831	33,804	33,590
Mortgage warehouse lines of credit
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	191,154	255,044
Less: Allowance for loan losses	158	214	128	139
Consumer
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment	20,985	20,505
Less: Allowance for loan losses	$ 315	$ 283	$ 344	$ 276

Loans (Details)

Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value	$ 25,934		$ 26,611
Amount committed to advance in connection with impaired loans	423
Nonperforming Financial Instruments
Loans and Leases Receivable Disclosure [Line Items]
Interest income	430	$ 904
Real estate | Commercial real estate
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value	20,400		21,000
Commercial and industrial
Loans and Leases Receivable Disclosure [Line Items]
Loans held for investment at fair value	$ 5,500		$ 5,600

Loans - Loans by Credit Quality

Loans - Loans by Credit Quality Indicator (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 3,245,992	$ 3,241,031
Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	3,139,809	3,125,722
Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	15,198	24,078
Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	90,985	91,228
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	3
Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	2,021,093	1,976,262
Real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,982,602	1,935,344
Real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	5,546	8,746
Real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	32,945	32,172
Real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,096,948	1,083,275
Real estate | Commercial real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,070,984	1,055,911
Real estate | Commercial real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	5,348	7,798
Real estate | Commercial real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	20,616	19,566
Real estate | Commercial real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Commercial real estate | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Construction/land/land development
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	340,684	322,404
Real estate | Construction/land/land development | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	337,148	318,488
Real estate | Construction/land/land development | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	165	170
Real estate | Construction/land/land development | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	3,371	3,746
Real estate | Construction/land/land development | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Construction/land/land development | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	583,461	570,583
Real estate | Residential real estate | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	574,470	560,945
Real estate | Residential real estate | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	33	778
Real estate | Residential real estate | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	8,958	8,860
Real estate | Residential real estate | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Real estate | Residential real estate | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	1,012,760	989,220
Commercial and industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	945,417	915,111
Commercial and industrial | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	9,652	15,332
Commercial and industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	57,691	58,777
Commercial and industrial | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Commercial and industrial | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	191,154	255,044
Mortgage warehouse lines of credit | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	191,154	255,044
Mortgage warehouse lines of credit | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Mortgage warehouse lines of credit | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Consumer
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	20,985	20,505
Consumer | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	20,636	20,223
Consumer | Special mention
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	0
Consumer | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	349	279
Consumer | Doubtful
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	0	3
Consumer | Loss
Financing Receivable, Recorded Investment [Line Items]
Loans held for investment	$ 0	$ 0

Loans - Loan Portfolio Aging An

Loans - Loan Portfolio Aging Analysis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 29,279	$ 41,272
Current loans	3,216,713	3,199,759
Loans held for investment	3,245,992	3,241,031
Accruing loans 90 or more days past due	0	0
30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	15,404	14,240
60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,072	13,360
Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	12,803	13,672
Real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	18,874	21,379
Current loans	2,002,219	1,954,883
Loans held for investment	2,021,093	1,976,262
Accruing loans 90 or more days past due	0	0
Real estate | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	13,391	12,545
Real estate | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	653	3,310
Real estate | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,830	5,524
Real estate | Commercial real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	9,784	12,368
Current loans	1,087,164	1,070,907
Loans held for investment	1,096,948	1,083,275
Accruing loans 90 or more days past due	0	0
Real estate | Commercial real estate | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	8,940	8,427
Real estate | Commercial real estate | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	2,791
Real estate | Commercial real estate | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	844	1,150
Real estate | Construction/land/land development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,092	2,124
Current loans	338,592	320,280
Loans held for investment	340,684	322,404
Accruing loans 90 or more days past due	0	0
Real estate | Construction/land/land development | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,534	1,488
Real estate | Construction/land/land development | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	172
Real estate | Construction/land/land development | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	558	464
Real estate | Residential real estate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	6,998	6,887
Current loans	576,463	563,696
Loans held for investment	583,461	570,583
Accruing loans 90 or more days past due	0	0
Real estate | Residential real estate | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,917	2,630
Real estate | Residential real estate | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	653	347
Real estate | Residential real estate | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,428	3,910
Commercial and industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	10,137	19,513
Current loans	1,002,623	969,707
Loans held for investment	1,012,760	989,220
Accruing loans 90 or more days past due	0	0
Commercial and industrial | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,877	1,517
Commercial and industrial | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	355	9,922
Commercial and industrial | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	7,905	8,074
Mortgage warehouse lines of credit
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Current loans	191,154	255,044
Loans held for investment	191,154	255,044
Accruing loans 90 or more days past due	0	0
Mortgage warehouse lines of credit | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Mortgage warehouse lines of credit | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Mortgage warehouse lines of credit | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	0	0
Consumer
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	268	380
Current loans	20,717	20,125
Loans held for investment	20,985	20,505
Accruing loans 90 or more days past due	0	0
Consumer | 30-59 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	136	178
Consumer | 60-89 Days past due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	64	128
Consumer | Loans past due 90 days or more
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 68	$ 74

Loans - Allowance for Loan Loss

Loans - Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 37,083	$ 50,531
Charge-offs	1,738	848
Recoveries	345	195
Provision (Benefit)	(1,558)	1,737
Ending Balance	34,132	51,615
(Benefit) provision for credit losses	(1,524)	2,814
Provision for off-balance sheet commitments	34	1,100
Real estate | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	8,998	8,718
Charge-offs	9	0
Recoveries	127	2
Provision (Benefit)	1,028	250
Ending Balance	10,144	8,970
Real estate | Construction/land/land development
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,950	2,805
Charge-offs	0	0
Recoveries	1	1
Provision (Benefit)	(244)	(320)
Ending Balance	2,707	2,486
Real estate | Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	5,807	5,003
Charge-offs	9	13
Recoveries	19	37
Provision (Benefit)	(346)	856
Ending Balance	5,471	5,883
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	18,831	33,590
Charge-offs	1,703	813
Recoveries	174	149
Provision (Benefit)	(1,965)	878
Ending Balance	15,337	33,804
Mortgage warehouse lines of credit
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	214	139
Charge-offs	0	0
Recoveries	0	0
Provision (Benefit)	(56)	(11)
Ending Balance	158	128
Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	283	276
Charge-offs	17	22
Recoveries	24	6
Provision (Benefit)	25	84
Ending Balance	$ 315	$ 344

Loans - Impaired Loans Evaluate

Loans - Impaired Loans Evaluated Individually and Collectively (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	$ 3,257	$ 4,807
Period end allowance allocated to loans collectively evaluated for impairment	30,875	32,276
Period end loan balance individually evaluated for impairment	32,768	39,658
Period ended loan balance collectively evaluated for impairment	3,187,290	3,174,762
Loans held for investment at fair value	25,934	26,611
Real estate | Commercial real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	1,448	312
Period end allowance allocated to loans collectively evaluated for impairment	8,696	8,686
Period end loan balance individually evaluated for impairment	10,236	4,945
Period ended loan balance collectively evaluated for impairment	1,066,284	1,057,330
Loans held for investment at fair value	20,400	21,000
Real estate | Construction/land/land development
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	4	4
Period end allowance allocated to loans collectively evaluated for impairment	2,703	2,946
Period end loan balance individually evaluated for impairment	1,421	1,963
Period ended loan balance collectively evaluated for impairment	339,263	320,441
Real estate | Residential real estate
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	28	72
Period end allowance allocated to loans collectively evaluated for impairment	5,443	5,735
Period end loan balance individually evaluated for impairment	7,498	7,915
Period ended loan balance collectively evaluated for impairment	575,963	562,668
Commercial and industrial
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	1,680	4,356
Period end allowance allocated to loans collectively evaluated for impairment	13,657	14,475
Period end loan balance individually evaluated for impairment	13,349	24,598
Period ended loan balance collectively evaluated for impairment	993,905	959,011
Loans held for investment at fair value	5,500	5,600
Mortgage warehouse lines of credit
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	0	0
Period end allowance allocated to loans collectively evaluated for impairment	158	214
Period end loan balance individually evaluated for impairment	0	0
Period ended loan balance collectively evaluated for impairment	191,154	255,044
Consumer
Financing Receivable, Allowance for Credit Losses [Line Items]
Period end allowance allocated to loans individually evaluated for impairment	97	63
Period end allowance allocated to loans collectively evaluated for impairment	218	220
Period end loan balance individually evaluated for impairment	264	237
Period ended loan balance collectively evaluated for impairment	$ 20,721	$ 20,268

Loans - Impaired Loans (Details

Loans - Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	$ 36,666	$ 43,810
Recorded investment with no allowance	15,591	16,647
Recorded investment with an allowance	17,177	23,011
Total recorded investment	32,768	39,658
Allocation of allowance for loan losses	3,257	4,807
Real estate
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	22,562	18,339
Recorded investment with no allowance	9,881	10,345
Recorded investment with an allowance	9,274	4,478
Total recorded investment	19,155	14,823
Allocation of allowance for loan losses	1,480	388
Real estate | Commercial real estate
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	11,166	6,047
Recorded investment with no allowance	1,973	1,782
Recorded investment with an allowance	8,263	3,163
Total recorded investment	10,236	4,945
Allocation of allowance for loan losses	1,448	312
Real estate | Construction/land/land development
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	1,740	2,268
Recorded investment with no allowance	1,272	1,813
Recorded investment with an allowance	149	150
Total recorded investment	1,421	1,963
Allocation of allowance for loan losses	4	4
Real estate | Residential real estate
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	9,656	10,024
Recorded investment with no allowance	6,636	6,750
Recorded investment with an allowance	862	1,165
Total recorded investment	7,498	7,915
Allocation of allowance for loan losses	28	72
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	13,815	25,212
Recorded investment with no allowance	5,587	6,161
Recorded investment with an allowance	7,762	18,437
Total recorded investment	13,349	24,598
Allocation of allowance for loan losses	1,680	4,356
Consumer
Financing Receivable, Impaired [Line Items]
Unpaid contractual principal balance	289	259
Recorded investment with no allowance	123	141
Recorded investment with an allowance	141	96
Total recorded investment	264	237
Allocation of allowance for loan losses	$ 97	$ 63

Loans - Average Recorded Invest

Loans - Average Recorded Investment and Interest Recognized on Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	$ 37,349	$ 78,908
Interest Income Recognized	151	72
Real estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	19,376	17,474
Interest Income Recognized	60	56
Real estate | Commercial real estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	9,864	6,377
Interest Income Recognized	27	33
Real estate | Construction/land/land development
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	1,847	1,032
Interest Income Recognized	9	3
Real estate | Residential real estate
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	7,665	10,065
Interest Income Recognized	24	20
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	17,717	61,183
Interest Income Recognized	88	14
Consumer
Financing Receivable, Impaired [Line Items]
Average Recorded Investment	256	251
Interest Income Recognized	$ 3	$ 2

Loans - Non Performing (Nonaccr

Loans - Non Performing (Nonaccrual) Loans Held For Investment (Details) - Nonperforming Financial Instruments - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	$ 27,010	$ 23,802
Real estate
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	17,349	10,008
Real estate | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	8,851	1,745
Real estate | Construction/land/land development
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	1,272	1,097
Real estate | Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	7,226	7,166
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	9,312	13,512
Consumer
Financing Receivable, Recorded Investment [Line Items]
Total nonaccrual loans	$ 349	$ 282

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Modifications [Line Items]
Loans classified as troubled debt restructurings	$ 8,209	$ 16,856
Nonaccrual TDRs
Financing Receivable, Modifications [Line Items]
Loans classified as troubled debt restructurings	2,158	2,622
Performing TDRs
Financing Receivable, Modifications [Line Items]
Loans classified as troubled debt restructurings	$ 6,051	$ 14,234

Loans - Pre and Post Modificati

Loans - Pre and Post Modification Balances of TDR (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)loan
Financing Receivable, Modifications [Line Items]
Number of loans restructured | loan	1
Pre-modification recorded balance	$ 94
Nonperforming Financial Instruments | Real estate | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Modifications	91
Term Concessions | Nonperforming Financial Instruments | Real estate | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Modifications	0
Interest Rate Concessions | Nonperforming Financial Instruments | Real estate | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Modifications	0
Combination | Nonperforming Financial Instruments | Real estate | Residential real estate
Financing Receivable, Modifications [Line Items]
Total Modifications	$ 91

Fair Value of Financial Instr53

Fair Value of Financial Instruments - Fair Value of Assets and Liabilities Recorded on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	$ 414,157	$ 404,532
Securities carried at fair value through income	11,723	12,033
Loans held for sale	19,301	32,768
Loans at fair value	25,934	26,611
Mortgage servicing rights	25,999	24,182	$ 28,882	$ 29,385
Fair Value, Measurements, Nonrecurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Foreclosed assets	722	499
Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	414,157	404,532
Securities carried at fair value through income	11,723	12,033
Loans held for sale	19,301	32,768
Loans at fair value	25,934	26,611
Mortgage servicing rights	25,999	24,182
Other assets - derivatives	2,716	3,146
Total recurring fair value measurements - assets	499,830	503,272
Other liabilities - derivatives	(1,898)	(3,320)
Total recurring fair value measurements - liabilities	(1,898)	(3,320)
Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
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]
Available for sale	374,196	362,517
Securities carried at fair value through income	0	0
Loans held for sale	19,301	32,768
Loans at fair value	0	0
Mortgage servicing rights	0	0
Other assets - derivatives	2,716	3,146
Total recurring fair value measurements - assets	396,213	398,431
Other liabilities - derivatives	(1,898)	(3,320)
Total recurring fair value measurements - liabilities	(1,898)	(3,320)
Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	39,961	42,015
Securities carried at fair value through income	11,723	12,033
Loans held for sale	0	0
Loans at fair value	25,934	26,611
Mortgage servicing rights	25,999	24,182
Other assets - derivatives	0	0
Total recurring fair value measurements - assets	103,617	104,841
Other liabilities - derivatives	0	0
Total recurring fair value measurements - liabilities	0	0
State and municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	127,221	129,978
State and municipal securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	127,221	129,978
State and municipal securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
State and municipal securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	87,260	87,963
State and municipal securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	39,961	42,015
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	3,115	3,136
Corporate bonds | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	3,115	3,136
Corporate bonds | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Corporate bonds | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	3,115	3,136
Corporate bonds | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	103,441	105,029
Residential mortgage-backed securities | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	103,441	105,029
Residential mortgage-backed securities | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential mortgage-backed securities | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	103,441	105,029
Residential mortgage-backed securities | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	180,380	166,389
Residential collateralized mortgage obligations | Fair Value, Measurements, Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	180,380	166,389
Residential collateralized mortgage obligations | Fair Value, Measurements, Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	0	0
Residential collateralized mortgage obligations | Fair Value, Measurements, Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	180,380	166,389
Residential collateralized mortgage obligations | Fair Value, Measurements, Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale	$ 0	$ 0

Fair Value of Financial Instr54

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, 2018	Mar. 31, 2017
Loans at Fair Value
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	$ 26,611	$ 33,693
Gain (loss) recognized in AOCI	0	0
Purchases, issuances, sales and settlements
Originations		0
Purchases	0	0
Sales		(2,516)
Settlements	(382)	(1,481)
Balance at end of period	25,934	29,531
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	(295)	(165)
MSRs
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Balance at beginning of period	24,182	29,385
Gain (loss) recognized in AOCI	0	0
Purchases, issuances, sales and settlements
Originations	543	628
Purchases	0	0
Sales		0
Settlements	0	0
Balance at end of period	25,999	28,882
MSRs | Mortgage banking revenue
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis
Gain (loss) recognized in earnings	1,274	(1,131)
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	42,015	43,858
Gain (loss) recognized in AOCI	(727)	2,151
Purchases, issuances, sales and settlements
Originations		0
Purchases	259	190
Sales		0
Settlements	(1,586)	(1,524)
Balance at end of period	39,961	44,675
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 carried 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	12,033	12,511
Gain (loss) recognized in AOCI	0	0
Purchases, issuances, sales and settlements
Originations		0
Purchases	0	0
Sales		0
Settlements	0	0
Balance at end of period	11,723	12,414
Securities carried 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 carried 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	$ (310)	$ (97)

Fair Value of Financial Instr55

Fair Value of Financial Instruments - Difference Between Fair Value and Unpaid Principal Balance (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	$ 56,958,000	$ 71,412,000
Aggregate Unpaid Principal Balance	56,652,000	70,176,000
Difference	306,000	1,236,000
Loans for which the fair value had been elected that were designated as nonaccrual or past due 90 days or more	0
Loans held for sale
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	19,301,000	32,768,000
Aggregate Unpaid Principal Balance	19,073,000	32,216,000
Difference	228,000	552,000
Loans, 90 days or more past due	246,000	2,400,000
Commercial and industrial loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	5,506,000	5,611,000
Aggregate Unpaid Principal Balance	5,506,000	5,591,000
Difference	0	20,000
Commercial real estate loans held for investment
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	20,428,000	21,000,000
Aggregate Unpaid Principal Balance	20,155,000	20,451,000
Difference	273,000	549,000
Securities carried at fair value through income
Fair Value, Option, Quantitative Disclosures [Line Items]
Aggregate Fair Value	11,723,000	12,033,000
Aggregate Unpaid Principal Balance	11,918,000	11,918,000
Difference	$ (195,000)	115,000
US Government Agencies Debt Securities
Fair Value, Option, Quantitative Disclosures [Line Items]
Loans, 90 days or more past due		$ 1,800,000

Fair Value of Financial Instr56

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, 2018	Mar. 31, 2017
Mortgage banking revenue
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	$ (324)	$ 91
Other income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	(605)	(262)
Noninterest income
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]
Fair value option impact on noninterest income	(929)	(171)
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	(295)	(165)
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	$ (310)	$ (97)

Fair Value of Financial Instr57

Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Liability to repurchase past due GNMA loans	$ 29,700	$ 32,600
Fair value of impaired loans	32,768	39,658
Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	19,155	14,823
Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of impaired loans	13,900	18,200
Foreclosed assets	722	$ 499
Residential real estate | Fair Value, Measurements, Nonrecurring | Fair Value, Inputs, Level 3 | Real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Residential mortgage loans in the process of foreclosure	$ 163
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	126.00%	1.26%
Credit spread, loans held-for-investment	283.00%	2.83%
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	227.00%	2.27%
Credit spread, loans held-for-investment	413.00%	4.13%

Fair Value of Financial Instr58

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, 2018	Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	$ 19,858	$ 20,265
Loans held for investment at fair value	25,934	26,611
Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment at fair value	25,934	26,611
Level 1 | Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment at fair value	0	0
Level 2 | Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment at fair value	0	0
Level 3 | Fair Value, Measurements, Recurring
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment at fair value	25,934	26,611
Carrying Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	247,257	187,187
Carrying Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	19,860	20,188
Non-marketable equity securities held in other financial institutions	22,995	22,967
Accrued interest and loan fees receivable	11,956	10,719
Deposits	3,580,738	3,512,014
FHLB advances and other borrowings	132,224	144,357
Junior subordinated debentures	9,625	9,619
Accrued interest payable	2,265	2,424
Carrying Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, net	3,220,058	3,177,337
Estimated Fair Value | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	247,257	187,187
Estimated Fair Value | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Securities held to maturity	19,858	20,265
Non-marketable equity securities held in other financial institutions	22,995	22,967
Accrued interest and loan fees receivable	11,956	10,719
Deposits	3,376,985	3,352,213
FHLB advances and other borrowings	132,661	145,330
Junior subordinated debentures	14,476	14,132
Accrued interest payable	2,265	2,424
Estimated Fair Value | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans held for investment, net	$ 3,144,110	$ 3,238,872

Mortgage Banking - Mortgage Ban

Mortgage Banking - Mortgage Banking Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mortgage Banking [Abstract]
Origination	$ 210	$ 227
Gain on sale of loans held for sale	2,024	2,294
Servicing	1,837	2,107
Total gross mortgage revenue	4,071	4,628
Mortgage derivatives gain (loss)	(539)	506
MSR change due to payoffs and paydowns	(784)	(952)
MSR and hedge fair value adjustment	(379)	(90)
Gain (loss) on MSR sale	25	0
Mortgage banking revenue	2,394	4,092
Origination volume	74,938	102,723
Mortgage loans sold	84,528	114,563
Outstanding principal balance of mortgage loans serviced for others	$ 2,167,185	$ 2,483,423

Mortgage Banking - Activity in

Mortgage Banking - Activity in Mortgage Servicing Rights (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Servicing Asset at Fair Value, Amount [Roll Forward]
Balance at beginning of period	$ 24,182	$ 29,385
Origination of servicing rights	(543)	(628)
Change in fair value, including amortization	1,274	(1,131)
Balance at end of period	$ 25,999	$ 28,882

Mortgage Banking - Assumptions

Mortgage Banking - Assumptions Used to Value Mortgage Servicing Rights (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
Mortgage Banking [Abstract]
Prepayment speed	8.78%	10.80%
Discount rate	9.42%	9.33%

Mortgage Banking (Details)

Mortgage Banking (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Mortgage Banking [Abstract]
Annual servicing fee income rate	0.29%
Mortgage loan servicing putback expenses	$ 0	$ 19
Reserve for mortgage loan servicing putback expenses	196		$ 254
Liability to repurchase past due GNMA loans	$ 29,700		$ 32,600

Derivative Financial Instrume63

Derivative Financial Instruments Fair Value of Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
Notional Amount	$ 438,206	$ 546,910
Fair value	596	(215)
Interest Rate Swap | Not Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amount	121,638	132,959
Fair value	1,365	2,314
Interest Rate Swap | Not Designated as Hedging Instrument | Other Liabilities
Derivatives, Fair Value [Line Items]
Notional Amount	142,398	159,479
Fair value	(1,749)	(3,221)
Forward Commitment to Purchase | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional Amount	100,000	160,000
Fair value	453	(50)
Forward Commitment to Sell | Not Designated as Hedging Instrument
Derivatives, Fair Value [Line Items]
Notional Amount	41,850	57,400
Fair value	(149)	(49)
Interest Rate Lock Commitments | Not Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amount	32,320	37,072
Fair value	676	791
Cash Flow Hedging | Interest Rate Swap | Designated as Hedging Instrument | Other Assets
Derivatives, Fair Value [Line Items]
Notional Amount	10,500	10,500
Fair value	$ 222	$ 41

Derivative Financial Instrume64

Derivative Financial Instruments Weighted-average Rates Paid and Received (Details) - Interest Rate Swap	Mar. 31, 2018
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	4.64%
Financial Institution | Not Designated as Hedging Instrument | Interest Rate Paid
Derivative [Line Items]
Weighted-average rates	4.78%
Financial Institution | Not Designated as Hedging Instrument | Interest Rate Received
Derivative [Line Items]
Weighted-average rates	3.83%
Customer | Not Designated as Hedging Instrument | Interest Rate Paid
Derivative [Line Items]
Weighted-average rates	3.78%
Customer | Not Designated as Hedging Instrument | Interest Rate Received
Derivative [Line Items]
Weighted-average rates	4.76%

Derivative Financial Instrume65

Derivative Financial Instruments Gains and Losses Recognized on Derivative Instruments Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mortgage banking revenue
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives not designated as hedging instruments	$ (1,661)	$ 389
Noninterest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized on derivatives not designated as hedging instruments	$ 523	$ 266

Derivative Financial Instrume66

Derivative Financial Instruments (Details) - USD ($)	Mar. 31, 2018	Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash collateral on deposit	$ 500,000	$ 7,000,000

Stock and Incentive Compensat67

Stock and Incentive Compensation Plans (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Outstanding stock options term (does not exceed)	20 years
Stock options granted (in shares)	0	0
Stock options exercised (in shares)	0	0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Shares surrendered to cover taxes owed upon the vesting of restricted stock awards (in shares)	845	2,363
Unrecognized compensation cost	$ 1.2
Unrecognized compensation cost weighted average period for recognition	2 years 4 days
2012 Plan
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Maximum number of common stock available for issuance (in shares)	1,130,338
Minimum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Service period in which time-vested awards are earned	1 year
Maximum
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Vesting period from the date of grant or merger	10 years
Maximum | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Service period in which time-vested awards are earned	5 years

Stock and Incentive Compensat68

Stock and Incentive Compensation Plans - Share-based Compensation Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	$ 194	$ 217
Related tax benefits recognized in net income	41	$ 76
Common stock options forfeited (in shares)		5,546
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	194	$ 247
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock compensation expense	$ 0	$ (30)

Stock and Incentive Compensat69

Stock and Incentive Compensation Plans - Time-vested Award Activity (Details) - Restricted Stock - $ / shares	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Shares
Novested shares, beginning balance (in shares)	61,293	84,019
Granted (in shares)	7,334	1,137
Vested (in shares)	(4,397)	(13,976)
Forfeited (in shares)	0	(3,524)
Novested shares, ending balance (in shares)	64,230	67,656
Weighted Average Grant-Date Fair Value
Nonvested shares, weighted average grant-date fair value, ending balance ($ per share)	$ 24.61	$ 24.22
Granted, weighted average grant-date fair value ($ per share)	25.41	22
Vested, weighted average grant-date fair value ($ per share)	24.91	21.23
Forfeited, weighted average grant-date fair value ($ per share)	0	24.09
Nonvested shares, weighted average grant-date fair value, beginning balance ($ per share)	$ 24.68	$ 22.95

Stock and Incentive Compensat70

Stock and Incentive Compensation Plans - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017	Dec. 31, 2016
Number of Shares
Outstanding, beginning of period (in shares)	319,500	358,638	358,638
Forfeited (in shares)		(5,546)
Outstanding, end of period (in shares)	319,500	353,092	319,500	358,638
Exercisable (in shares)	319,500
Weighted Average Exercise Price
Outstanding, beginning of period ($ per share)	$ 10.65	$ 11.37	$ 11.37
Forfeited ($ per share)		23.89
Outstanding, end of period ($ per share)	10.65	$ 11.17	$ 10.65	$ 11.37
Exercisable, end ($ per share)	$ 10.65
Weighted average remaining contractual term (in years)	6 years 9 months 26 days	7 years 6 months	7 years 26 days	7 years 9 months 15 days
Weighted average remaining contractual term, exercisable (in years)	6 years 9 months 26 days
Aggregate intrinsic value	$ 4,843	$ 3,923	$ 4,840	$ 3,844
Aggregate intrinsic value, exercisable	$ 4,843

Income Taxes Provision for Inco

Income Taxes Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Federal income taxes
Current	$ 2,175	$ 2,382
Deferred	501	50
State income taxes
Current	76	161
Deferred	32	(13)
Income tax expense	$ 2,784	$ 2,580
Effective income tax rate	17.20%	26.30%

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated other comprehensive income (loss)	$ (2,759)	$ 1,307
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accumulated other comprehensive income (loss)		$ (282)
Reclassification from Accumulated Other Comprehensive Income to Retained Earnings	$ 282

Accumulated Other Comprehensi73

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	$ 420,351	$ 420,093
Net change	(4,348)	299
Stockholders' equity, ending balance	427,833	426,074
Unrealized gains on AFS securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	1,280	3,505
Net change	(4,492)	278
Reclassification of tax effects related to the adoption of ASU 2018-02, current	(293)
Reclassification of tax effects related to the adoption of ASU 2018-02, deferred	569
Stockholders' equity, ending balance	(2,936)	3,783
Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	27	(42)
Net change	144	21
Reclassification of tax effects related to the adoption of ASU 2018-02, current	17
Reclassification of tax effects related to the adoption of ASU 2018-02, deferred	(11)
Stockholders' equity, ending balance	177	(21)
Accumulated other comprehensive income
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Stockholders' equity, beginning balance	1,307	3,463
Net change	(4,348)	299
Reclassification of tax effects related to the adoption of ASU 2018-02, current	(276)
Reclassification of tax effects related to the adoption of ASU 2018-02, deferred	558
Stockholders' equity, ending balance	$ (2,759)	$ 3,762

Capital and Regulatory Matter74

Capital and Regulatory Matters (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Origin Bancorp, Inc.
Common Equity Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 371,112	$ 360,069
Actual, ratio	9.68%	9.35%
Minimum capital required, amount	$ 268,319	$ 269,570
Minimum capital required, ratio	7.00%	7.00%
Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 444,246	$ 433,338
Actual, ratio	11.59%	11.25%
Minimum capital required, amount	$ 325,817	$ 327,411
Minimum capital required, ratio	8.50%	8.50%
Total Capital to Risk-Weighted Assets
Actual, amount	$ 480,428	$ 472,437
Actual, ratio	12.53%	12.26%
Minimum capital required, amount	$ 402,481	$ 404,616
Minimum capital required, ratio	10.50%	10.50%
Leverage Ratio
Actual, amount	$ 444,246	$ 433,338
Actual, ratio	10.65%	10.53%
Minimum capital required, amount	$ 166,790	$ 164,611
Minimum capital required, ratio	4.00%	4.00%
Origin Bank | Origin Bank
Common Equity Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 426,583	$ 416,175
Actual, ratio	11.16%	10.82%
Minimum capital required, amount	$ 267,688	$ 269,244
Minimum capital required, ratio	7.00%	7.00%
Well capitalized, amount	$ 248,567	$ 250,012
Well capitalized, ratio	6.50%	6.50%
Tier 1 Capital to Risk-Weighted Assets
Actual, amount	$ 426,583	$ 416,175
Actual, ratio	11.16%	10.82%
Minimum capital required, amount	$ 325,049	$ 326,940
Minimum capital required, ratio	8.50%	8.50%
Well capitalized, amount	$ 305,929	$ 307,708
Well capitalized, ratio	8.00%	8.00%
Total Capital to Risk-Weighted Assets
Actual, amount	$ 462,765	$ 455,274
Actual, ratio	12.10%	11.84%
Minimum capital required, amount	$ 401,530	$ 403,748
Minimum capital required, ratio	10.50%	10.50%
Well capitalized, amount	$ 382,409	$ 384,522
Well capitalized, ratio	10.00%	10.00%
Leverage Ratio
Actual, amount	$ 426,583	$ 416,175
Actual, ratio	10.25%	10.13%
Minimum capital required, amount	$ 166,478	$ 164,334
Minimum capital required, ratio	4.00%	4.00%
Well capitalized, amount	$ 208,097	$ 205,418
Well capitalized, ratio	5.00%	5.00%
Aggregate dividends without prior regulatory approval	$ 18,100

Commitments and Contingencies -

Commitments and Contingencies - Off-Balance Sheet Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instrument	$ 1,047,196	$ 1,068,088
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance sheet financial instrument	$ 80,991	$ 79,893

Commitments and Contingencies76

Commitments and Contingencies (Details) - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Credit card guarantees	$ 1.1	$ 1
FHLB letters of credit	135	185
Lending-related Commitments
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Credit card guarantees		$ 2
Reserve for lending related commitments	$ 2

Accounting Standards Update (De

Accounting Standards Update (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018USD ($)
Accounting Standards Update 2018-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from Accumulated Other Comprehensive Income to Retained Earnings	$ 282

Subsequent Events (Details)

Subsequent Events (Details) - Subsequent Event - USD ($) $ / shares in Units, $ in Millions	May 10, 2018	Apr. 02, 2018
IPO
Subsequent Event [Line Items]
Stock price ($ per share)	$ 34
Shares issued in offering (in shares)	3,045,426
Net proceeds	$ 95.2
Over-Allotment Option
Subsequent Event [Line Items]
Shares issued in offering (in shares)	545,426
Shares sold by existing stockholders
Subsequent Event [Line Items]
Shares issued in offering (in shares)	1,136,176
Scenario, Plan | Monroe, Louisiana General Insurance Agency Acquisition
Subsequent Event [Line Items]
Purchase agreement estimated cost		$ 9.5