CrossFirst Bankshares (CFB) 10-Q 12 Nov 19 2019 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2019	Nov. 11, 2019
Cover page.
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2019
Document Transition Report	false
Entity File Number	001-39028
Entity Registrant Name	CROSSFIRST BANKSHARES, INC.
Entity Incorporation, State or Country Code	KS
Entity Tax Identification Number	26-3212879
Entity Address, Address Line One	11440 Tomahawk Creek Parkway
Entity Address, City or Town	Leawood
Entity Address, State or Province	KS
Entity Address, Postal Zip Code	66211
City Area Code	913
Local Phone Number	312-6822
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	CFB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,969,203
Entity Central Index Key	0001458412
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Cash and cash equivalents	$ 128,126	$ 216,541
Available for sale securities - taxable	323,531	296,133
Available for sale securities - tax-exempt	409,562	367,545
Premises and equipment, held for sale	0	3,444
Loans, net of allowance for loan losses of $42,995 and $37,826 at September 30, 2019 and December 31, 2018, respectively	3,586,797	3,022,921
Premises and equipment, net	71,314	74,945
Restricted equity securities	16,053	14,525
Interest receivable	15,909	14,092
Foreclosed assets held for sale	2,471	0
Deferred tax asset	7,429	16,316
Goodwill and other intangible assets, net	7,720	7,796
Bank-owned life insurance	65,228	63,811
Other	17,173	9,146
Total assets	4,651,313	4,107,215
Deposits
Non-interest bearing	513,832	484,284
Savings, NOW and money market	1,922,522	1,714,136
Time	1,221,754	1,009,677
Total deposits	3,658,108	3,208,097
Federal funds purchased and repurchase agreements	49,810	75,406
Federal Home Loan Bank advances	307,804	312,985
Other borrowings	912	884
Interest payable and other liabilities	32,244	19,507
Total liabilities	4,048,878	3,616,879
Stockholders’ equity
Redeemable preferred stock, $0.01 par value, $25 liquidation value: authorized - 5,000,000 shares, issued - 0 and 1,200,000 shares at September 30, 2019 and December 31, 2018, respectively	0	12
Common stock, $0.01 par value: authorized - 200,000,000 shares issued - 51,969,203 and 45,074,322 shares at September 30, 2019 and December 31, 2018, respectively	520	451
Additional paid-in capital	518,816	454,512
Retained earnings	65,282	38,567
Other	(84)	(196)
Accumulated other comprehensive income (loss)	17,901	(3,010)
Total stockholders’ equity	602,435	490,336
Total liabilities and stockholders’ equity	$ 4,651,313	$ 4,107,215

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Assets
Less: Allowance for loan losses	$ 42,995	$ 37,826
Stockholders’ equity
Redeemable preferred stock par value (in dollars per share)	$ 0.01	$ 0.01
Redeemable preferred stock liquidation value (in dollars per share)	$ 25	$ 25
Redeemable preferred stock authorized (in shares)	5,000,000	5,000,000
Redeemable preferred stock issued (in shares)	0	1,200,000
Common stock par value (in dollars per share)	$ 0.01	$ 0.01
Common stock authorized (in shares)	200,000,000	200,000,000
Common stock issued (in shares)	51,969,203	45,074,322

Consolidated Statements of Inco

Consolidated Statements of Income - Unaudited - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Interest Income
Loans, including fees		$ 49,327	$ 34,012	$ 142,319	$ 89,262
Available for sale securities - Taxable		1,991	2,200	6,646	5,729
Available for sale securities - Tax-exempt		2,969	3,586	8,820	11,622
Deposits with financial institutions		970	723	2,452	2,481
Dividends on bank stocks		272	254	801	718
Total interest income		55,529	40,775	161,038	109,812
Interest Expense
Deposits		18,003	9,999	51,421	26,639
Fed funds purchased and repurchase agreements		74	287	501	628
Advances from Federal Home Loan Bank		1,629	1,468	4,739	4,308
Other borrowings		37	53	112	184
Total interest expense		19,743	11,807	56,773	31,759
Net Interest Income		35,786	28,968	104,265	78,053
Provision for loan losses		4,850	3,000	10,550	9,000
Net Interest Income after Provision for Loan Losses		30,936	25,968	93,715	69,053
Non-Interest Income
Non-interest income		759	371	2,363	1,942
Gain on sale of available for sale securities		34	195	467	608
Impairment of premises and equipment held for sale		0	(171)	(424)	(171)
Gain on sale of loans		49	25	207	618
Income from bank-owned life insurance		476	513	1,416	1,511
Swap fee income, net		1,879	253	2,415	299
Other non-interest income		226	169	695	690
Total non-interest income		3,212	1,185	6,529	4,888
Non-Interest Expense
Salaries and employee benefits		14,256	12,652	43,296	43,689
Occupancy		2,080	2,132	6,301	6,199
Professional fees		427	766	1,923	2,421
Deposit insurance premiums		302	823	2,020	2,411
Data processing		649	528	1,868	1,470
Advertising		580	527	1,770	1,982
Software and communication		900	630	2,407	1,958
Depreciation and amortization		413	516	1,320	1,306
Other non-interest expense		1,565	1,301	4,858	4,153
Total non-interest expense		21,172	19,875	65,763	65,589
Net Income Before Taxes		12,976	7,278	34,481	8,352
Income tax expense (benefit)		2,592	924	5,308	(904)
Net Income		$ 10,384	$ 6,354	$ 29,173	$ 9,256
Basic Earnings Per Share (in dollars per share)	[1]	$ 0.22	$ 0.15	$ 0.63	$ 0.23
Diluted Earnings Per Share (in dollars per share)	[1]	$ 0.21	$ 0.15	$ 0.61	$ 0.22
Service charges and fees (rebates) on customer accounts
Non-Interest Income
Non-interest income		$ 72	$ (100)	$ 441	$ 506
ATM and credit card interchange income
Non-Interest Income
Non-interest income		$ 476	$ 301	$ 1,312	$ 827
[1]	Share data has been adjusted to reflect a 2-for-1 stock split effected in the form of a dividend on December 21, 2018.

Consolidated Statements of In_2

Consolidated Statements of Income - Unaudited (Parenthetical)	Dec. 21, 2018
Income Statement [Abstract]
Stock split ratio	2

Consolidated Statements of Othe

Consolidated Statements of Other Comprehensive Income (Loss) - Unaudited Consolidated Statements of Other Comprehensive Income (Loss) - Unaudited - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 10,384	$ 6,354	$ 29,173	$ 9,256
Other Comprehensive Income (Loss)
Unrealized gain (loss) on available-for-sale securities	5,757	(6,592)	28,084	(22,062)
Less: income tax (benefit)	1,410	(1,620)	6,890	(5,414)
Unrealized gain (loss) on available-for-sale securities, net of income tax (benefit)	4,347	(4,972)	21,194	(16,648)
Reclassification adjustment for realized gains included in income	34	195	467	608
Less: income tax	9	47	115	149
Less: reclassification adjustment for realized gains included in income, net of income tax	25	148	352	459
Other comprehensive income (loss)	4,322	(5,120)	20,842	(17,107)
Comprehensive Income (Loss)	$ 14,706	$ 1,234	$ 50,015	$ (7,851)

Consolidated Statements of Stoc

Consolidated Statements of Stockholders' Equity - Unaudited - USD ($) $ in Thousands		Total	Preferred Stock	Common Stock		Additional Paid-in Capital	Retained Earnings	[1]	Other	Accumulated Other Comprehensive Income (Loss)	Performance Based Restricted Stock Units And Stock, Restricted Stock Units And Restricted Stock Awards	Performance Based Restricted Stock Units And Stock, Restricted Stock Units And Restricted Stock AwardsAdditional Paid-in Capital
Beginning balance (in shares) at Dec. 31, 2017			1,200,000	30,686,256	[1]
Beginning balance at Dec. 31, 2017		$ 287,147	$ 12	$ 307	[1]	$ 256,108	$ 23,950		$ (256)	$ 7,026
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		9,256					9,256
Change in unrealized depreciation on available-for-sale securities		(17,107)								(17,107)
Issuance of shares (in shares)	[1]			9,557,054
Issuance of shares		132,915		$ 95	[1]	132,868	(48)
Issuance of shares from equity based awards (in shares)	[1]			284,078
Issuance of shares from equity-based awards		(1,651)		$ 3	[1]	(1,653)	(1)
Retired Shares (in shares)	[1]			(265,908)
Retired shares		(3,790)		$ (3)	[1]	(2,534)	(1,253)
Preferred dividends declared		(1,575)					(1,575)
Employee receivables from sale of stock		72				8			64
Share-based compensation											$ 4,386	$ 4,386
Employee stock purchase plan additions		127				127
Ending balance at Sep. 30, 2018		409,780	$ 12	$ 402	[1]	389,310	30,329		(192)	(10,081)
Ending balance (in shares) at Sep. 30, 2018			1,200,000	40,261,480	[1]
Beginning balance (in shares) at Jun. 30, 2018			1,200,000	35,496,278	[1]
Beginning balance at Jun. 30, 2018		342,537	$ 12	$ 355	[1]	321,544	25,778		(191)	(4,961)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		6,354					6,354
Change in unrealized depreciation on available-for-sale securities		(5,120)								(5,120)
Issuance of shares (in shares)	[1]			5,031,110
Issuance of shares		69,758		$ 50	[1]	69,733	(25)
Issuance of shares from equity based awards (in shares)	[1]			0
Issuance of shares from equity-based awards		0		$ 0	[1]	0	0
Retired Shares (in shares)	[1]			(265,908)
Retired shares		(3,790)		$ (3)	[1]	(2,534)	(1,253)
Preferred dividends declared		(525)					(525)
Employee receivables from sale of stock		1				2			(1)
Share-based compensation											527	527
Employee stock purchase plan additions		38				38
Ending balance at Sep. 30, 2018		409,780	$ 12	$ 402	[1]	389,310	30,329		(192)	(10,081)
Ending balance (in shares) at Sep. 30, 2018			1,200,000	40,261,480	[1]
Beginning balance (in shares) at Dec. 31, 2018			1,200,000	45,074,322	[1]
Beginning balance at Dec. 31, 2018		490,336	$ 12	$ 451	[1]	454,512	38,567		(196)	(3,010)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		29,173					29,173
Change in unrealized depreciation on available-for-sale securities		20,842								20,842
Issuance of shares (in shares)	[1]			6,851,213
Issuance of shares		88,937		$ 68	[1]	88,869
Issuance of shares from equity based awards (in shares)	[1]			53,668
Issuance of shares from equity-based awards		(245)		$ 1	[1]	(246)
Retired Shares (in shares)			(1,200,000)	(10,000)	[1]
Retired shares		(30,155)	$ (12)	$ 0	[1]	(30,088)	(55)
Preferred dividends declared		(175)					(175)
Employee receivables from sale of stock		117				5			112
Share-based compensation											3,569	3,569
Employee stock purchase plan additions		36				36
Ending balance at Sep. 30, 2019		602,435	$ 0	$ 520	[1]	518,816	65,282		(84)	17,901
Ending balance (in shares) at Sep. 30, 2019			0	51,969,203	[1]
Beginning balance (in shares) at Jun. 30, 2019			0	45,367,641	[1]
Beginning balance at Jun. 30, 2019		499,195	$ 0	$ 453	[1]	430,347	54,899		(83)	13,579
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		10,384					10,384
Change in unrealized depreciation on available-for-sale securities		4,322								4,322
Issuance of shares (in shares)	[1]			6,600,245
Issuance of shares		87,220		$ 67	[1]	87,154	(1)
Issuance of shares from equity based awards (in shares)	[1]			1,317
Issuance of shares from equity-based awards		(10)		$ 0	[1]	(10)	0
Employee receivables from sale of stock		0				1			(1)
Share-based compensation											$ 1,324	$ 1,324
Employee stock purchase plan additions		0				0
Ending balance at Sep. 30, 2019		$ 602,435	$ 0	$ 520	[1]	$ 518,816	$ 65,282		$ (84)	$ 17,901
Ending balance (in shares) at Sep. 30, 2019			0	51,969,203	[1]
[1]	Share data has been adjusted to reflect a 2-for-1 stock split effected in the form of a dividend on December 21, 2018.

Consolidated Statements of St_2

Consolidated Statements of Stockholders' Equity - Unaudited (Parenthetical)	Dec. 21, 2018
Statement of Stockholders' Equity [Abstract]
Stock split ratio	2

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - Unaudited - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Operating Activities
Net income	$ 29,173	$ 9,256
Depreciation and amortization	4,015	3,299
Provision for loan losses	10,550	9,000
Accretion of discounts and amortization of premiums on securities	4,098	4,134
Equity based compensation	3,606	4,513
(Gain) loss on disposal of fixed assets	64	(4)
Gain on sale of loans	(207)	(618)
Deferred income taxes	2,088	(1,105)
Net increase in bank owned life insurance	(1,416)	(1,511)
Net realized gains on available-for-sale securities	(539)	(608)
Impairment of assets held for sale	424	171
Dividends on FHLB stock	(797)	(713)
Stock dividends on CRA mutual fund	(38)	(34)
Changes in
Interest receivable	(1,817)	(2,105)
Other assets	(7,795)	(170)
Other liabilities	13,261	4,237
Net cash provided by operating activities	54,670	27,742
Investing Activities
Net change in loans	(576,897)	(741,784)
Purchases of available-for-sale securities	(157,492)
Purchases of available-for-sale securities		(198,214)
Proceeds from maturities of available-for-sale securities	48,658	35,755
Proceeds from sale of available-for-sale securities	63,515	149,271
Purchase of premises and equipment	(649)	(41,268)
Purchase of restricted equity securities	(1,673)	(1,300)
Proceeds from the sale of fixed assets	3,324	1,862
Proceeds from sale of restricted equity securities	941	942
Net cash used in investing activities	(620,273)	(794,736)
Financing Activities
Net increase in demand deposits, savings, NOW and money market accounts	237,934	456,487
Net increase in time deposits	212,077	46,729
Net increase (decrease) in repurchase agreements and fed funds purchased	(50,596)	77,479
Net increase in federal funds sold	25,000	55,000
Proceeds from line of credit	0	30,000
Repayment of line of credit	0	(30,000)
Proceeds from Federal Home Loan Bank advances	45,000	28,000
Repayment of Federal Home Loan Bank advances	(50,181)	(10,171)
Net repayments of Federal Home Loan Bank line of credit	0	(25,000)
Retirement of preferred stock	(30,000)	0
Issuance of common shares, net of issuance cost	88,390	132,550
Proceeds from employee stock purchase plan	547	367
Common stock purchased and retired	(155)	(3,790)
Acquisition of common stock for tax withholding obligations	(245)	(1,651)
Net decrease in employee receivables	117	72
Dividends paid on preferred stock	(700)	(1,575)
Net cash provided by financing activities	477,188	754,497
Decrease in Cash and Cash Equivalents	(88,415)	(12,497)
Cash and Cash Equivalents, Beginning of Period	216,541	130,820
Cash and Cash Equivalents, End of Period	128,126	118,323
Supplemental Cash Flows Information
Interest paid	54,998	31,437
Income taxes paid	1,030	19
Foreclosed assets in settlement of loans	2,471	0
Dividends declared and unpaid on preferred stock	$ 0	$ 525

Nature of Operations and Summar

Nature of Operations and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Nature of Operations and Summary of Significant Accounting Policies	Nature of Operations and Summary of Significant Accounting Policies Organization and Nature of Operations CrossFirst Bankshares, Inc. (the ‘‘Company’’), a Kansas corporation, was incorporated in December 2017 . Prior to incorporation, the Company was registered as a limited liability company under the name CrossFirst Holdings, LLC. The Company is a bank holding company whose principal activities are the ownership and management of its wholly-owned subsidiaries, CrossFirst Bank (the ‘‘Bank’’) and CFSA, LLC (“CFSA”), which holds title to certain assets. In addition, CrossFirst Investments, Inc. (‘‘CFI’’) is a wholly-owned subsidiary of the Bank, which holds investments in marketable securities. Basis of Presentation The Company’s accounting and reporting policies conform to accounting principles generally accepted in the United States (‘‘GAAP’’). The consolidated financial statements include the accounts of the Company; the Bank, CFI and CFSA. All significant intercompany accounts and transactions have been eliminated in consolidation. The consolidated interim financial statements are unaudited and certain information and footnote disclosures presented in accordance with GAAP have been condensed or omitted and should be read in conjunction with the Company’s consolidated financial statements, and notes thereto, for the six-months ended June 30, 2019 and year ended December 31, 2018 included in the Company’s prospectus, dated August 14, 2019, filed with the Securities and Exchange Commission (‘‘SEC’’) pursuant to Rule 424(b) of the Securities Act of 1933, as amended, on August 15, 2019, related to the Company’s initial public offering (the ‘‘IPO Prospectus’’). In the opinion of management, the interim financial statements include all adjustments all of which are of a normal, recurring nature necessary for the fair presentation of the financial position, results of operations, and cash flows of the Company and the disclosures made are adequate to make the interim financial information not misleading. The consolidated financial statements have been prepared in accordance with GAAP for interim financial information and the instructions to Form 10-Q adopted by the SEC. There have been no significant changes in the accounting policies of the Company since June 30, 2019, the most recent date financial statements were provided within the IPO Prospectus. The information contained in the financial statements and footnotes for the period ended June 30, 2019 included in the Company’s IPO Prospectus should be referred to in connection with these unaudited interim consolidated financial statements. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period. Use of Estimates The Company has identified accounting policies and estimates that, due to the difficult, subjective or complex judgments and assumptions inherent in those policies and estimates and the potential sensitivity of the Company’s financial statements to those judgments and assumptions, are critical to an understanding of the Company’s financial condition and results of operations. Actual results could differ from those estimates. The Allowance for Loan and Lease Losses, Investment Securities Impairment, Deferred Tax Asset, and Fair Value of Financial Instruments are particularly susceptible to significant change. Change in Presentation Due to Stock Split On December 18, 2018 , the Company announced a 2 -for-1 stock split, effected in the form of a dividend, effective December 21, 2018 . Share data and per share data were retroactively adjusted for the periods presented to reflect the change in capital structure. Cash Equivalents The Company had $85.0 million of cash and cash equivalents at the Federal Reserve Bank of Kansas City as of September 30, 2019 . The reserve required at September 30, 2019 was approximately $63.3 million . In addition, the Company is at times required to place cash collateral with a third party as part of its back-to-back swap agreements. At September 30, 2019 , approximately $18.2 million was required as cash collateral. Initial Public Offering On August 19, 2019 , the Company completed its initial public offering of common shares. The Company issued and sold 5,750,000 common shares at a public offering price of $14.50 per share. After deducting the underwriting discounts and offering expenses, the Company received total net proceeds of $75.6 million from the initial public offering. In addition, certain selling stockholders participated in the offering and sold an aggregate of 1,261,589 common shares at a public offering price of $14.50 per share. The Company did not receive any proceeds from the sales of shares by the selling stockholders. On September 17, 2019, the underwriters partially exercised their option to purchase additional shares. The Company issued and sold 844,362 common shares at a public offering price of $14.50 per share. After deducting the underwriting discounts and offering expenses, the Company received total net proceeds of $11.4 million . As of September 30, 2019 , the Company qualified as an emerging growth company (‘‘EGC’’) under the Jumpstart Our Business Startups Act of 2012 (the ‘‘JOBS Act’’). An EGC may take advantage of reduced reporting requirements and is relieved of certain other significant requirements that are otherwise generally applicable to public companies. Amongst the reductions and reliefs, the Company elected to extend the transition period for complying with new or revised accounting standards affecting public companies. This means that the financial statements the Company files or furnishes, will not be subject to all new or revised accounting standards generally applicable to public companies for the transition period for so long as the Company remains an EGC or until the Company affirmatively and irrevocably opt out of the extended transition period under the JOBS Act. Recent Accounting Pronouncements The Company has implemented the following Accounting Standards Updates (‘‘ASU’’) during 2019 : Standard Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2018-07 - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting January 2019 Early adoption Expanded the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees, excluding share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers . The amendments include (1) grants are measured at grant-date fair value of the equity instruments, (2) equity-classified nonemployee share-based payment awards are measured at the grant date, (3) performance based awards are measured based on the probability of satisfying the performance conditions, and (4) in general, non-employee share-based payment awards will continue to be subject to the requirements of ASC 718 unless modified after the good has been delivered, the service has been rendered, any other conditions necessary to earn the right to benefit from the instrument have been satisfied, and the nonemployee is no longer providing goods or services. The Company had 216,960 stock-based awards to non-employees as of the implementation date, including 116,960 performance-based restricted stock units. The adoption of the ASU allowed the Company to (i) set the fair market value of the non-employee awards as of the adoption date and (ii) start to expense the performance-based restricted stock units based on the probability of satisfying the performance conditions. Standard Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-01 - Financial Instruments-Overall (Subtopic 825-10) January 2019 Required equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. Emphasized the existing requirement to use exit prices to measure fair value for disclosure purposes and clarifies that entities should not make use of practicability exceptions in determining the fair value of loans. The Company transferred $68.7 thousand from accumulated other comprehensive loss to retained earnings in January 2019. There was no impact to the income statement on the adoption date. ASU 2014-09 - Revenue from Contracts with Customers January 2019 Amended guidance related to revenue from contracts with customers. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Replaced nearly all existing revenue recognition guidance, including industry-specific guidance, established a new control-based revenue recognition model, changed the basis for deciding when revenue is recognized over time or at a point in time, provided new and more detailed guidance on specific topics and expands and improves disclosures about revenue. The accounting update did not materially impact the financial statements or recognition of revenues. The Company has updates to the following ASUs that have not yet been adopted. A complete list of recent, applicable accounting pronouncements was provided in the IPO Prospectus: Standard Anticipated Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-13 Financial Instruments-Credit Losses The Company expects to implement this standard in 2020; however, the Company is not required to implement this standard until January 2023 if it maintains its EGC status. Requires an entity to utilize a new impairment model known as the current expected credit loss (’’CECL’’) model to estimate its lifetime expected credit loss and record an allowance that, when deducted from amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The Company has established a committee of individuals from applicable departments to oversee the implementation process. The Company implemented a third-party software solution and completed the software implementation phase of the transition. The software implementation phase included data capture and portfolio segmentation amongst other items. The Company has completed an initial parallel run using 2019 data and expects to complete a second parallel run using third quarter data during the fourth quarter. At this time, an estimate of the impact cannot be established as the Company continues to evaluate the inputs into the model. The fourth quarter parallel run may provide a better estimate of the impact to the Company’s financial statements, but the actual impact could be significantly affected by the composition, characteristics and quality of the underlying loan portfolio at the time of adoption. Standard Anticipated Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-02 Leases (Topic 842) The Company expects to implement this standard in 2020; however, the Company is not required to implement this standard until January 2021 if it maintains its EGC status. Requires lessees and lessors to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. The update requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach with the option to elect certain practical expedients. The update will also increase disclosures around leases, including qualitative and specific quantitative measures. The Company is electing to apply the update as of the beginning of the period of adoption and the Company will not restate comparative periods. The Company also expects to elect certain optional practical expedients.

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table presents the computation of basic and diluted earnings per share: Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Earnings per Share Net income $ 10,384 $ 6,354 $ 29,173 $ 9,256 Less: preferred stock dividends — 525 175 1,575 Net income available to common stockholders $ 10,384 $ 5,829 $ 28,998 $ 7,681 Weighted average common shares (1) 48,351,553 37,790,614 46,239,021 33,918,540 Earnings per share $ 0.22 $ 0.15 $ 0.63 $ 0.23 Dilutive Earnings Per Share Net income available to common stockholders $ 10,384 $ 5,829 $ 28,998 $ 7,681 Weighted average common shares (1) 48,351,553 37,790,614 46,239,021 33,918,540 Effect of dilutive shares (1) 812,996 988,010 842,706 1,133,888 Weighted average dilutive common shares (1) 49,164,549 38,778,624 47,081,727 35,052,428 Diluted earnings per share $ 0.21 $ 0.15 $ 0.61 $ 0.22 SARs, RSUs, RSAs, PRSUs, PSSs not included because to do so would be antidilutive (1) 541,556 442,452 507,167 273,180 1 Share data has been adjusted to reflect a 2-for-1 stock split effected in the form of a dividend on December 21, 2018.

Securities

Securities	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Securities	Securities Available-for-Sale Debt and Equity Securities The amortized cost and approximate fair values, together with gross unrealized gains and losses, of period end available-for-sale debt and equity securities consisted of the following: September 30, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Approximate Fair Value (Dollars in thousands) Available-for-sale debt securities Mortgage-backed - GSE residential $ 158,897 $ 2,009 $ 192 $ 160,714 Collateralized mortgage obligations - GSE residential 147,917 1,002 244 148,675 State and political subdivisions 398,963 21,051 5 420,009 Corporate bonds 1,444 92 — 1,536 Total available-for-sale debt securities 707,221 24,154 441 730,934 Equity securities Mutual funds 2,179 — 20 2,159 Total equity securities 2,179 — 20 2,159 Total available-for-sale securities $ 709,400 $ 24,154 $ 461 $ 733,093 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Approximate Fair Value (Dollars in thousands) Available-for-sale debt securities Mortgage-backed - GSE residential $ 131,215 $ 162 $ 2,090 $ 129,287 Collateralized mortgage obligations - GSE residential 154,110 287 1,771 152,626 State and political subdivisions 378,595 3,908 4,445 378,058 Corporate bonds 1,613 70 26 1,657 Total available-for-sale debt securities 665,533 4,427 8,332 661,628 Equity securities Mutual funds 2,141 — 91 2,050 Total equity securities 2,141 — 91 2,050 Total available-for-sale securities $ 667,674 $ 4,427 $ 8,423 $ 663,678 The carrying value of securities pledged as collateral was $36.6 million and $108.6 million at September 30, 2019 and December 31, 2018 , respectively. The amortized cost and fair value of available-for-sale debt securities at September 30, 2019 , by contractual maturity, are shown below: September 30, 2019 Within After One to After Five to After One Year Five Years Ten Years Ten Years Total (Dollars in thousands) Available-for-sale debt securities Mortgage-backed - GSE residential (1) Amortized cost $ — $ — $ 1,411 $ 157,486 $ 158,897 Estimated fair value — — 1,471 159,243 160,714 Collateralized mortgage obligations - GSE residential (1) Amortized cost — — 2,876 145,041 147,917 Estimated fair value — — 3,011 145,664 148,675 State and political subdivisions Amortized cost — 3,580 40,410 354,973 398,963 Estimated fair value — 3,674 43,071 373,264 420,009 Corporate bonds Amortized cost — — 1,444 — 1,444 Estimated fair value — — 1,536 — 1,536 Total available-for-sale debt securities Amortized cost — 3,580 46,141 657,500 707,221 Estimated fair value $ — $ 3,674 $ 49,089 $ 678,171 $ 730,934 (1) Actual maturities may differ from contractual maturities because issuers may have the rights to call or prepay obligations with or without prepayment penalties. The following tables show gross unrealized losses, the number of securities that are in an unrealized loss position, and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment class and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2019 and December 31, 2018 : September 30, 2019 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities (Dollars in thousands) Available-for-Sale Debt Securities Mortgage-backed - GSE residential $ 3,988 $ 4 1 $ 27,889 $ 188 5 $ 31,877 $ 192 6 Collateralized mortgage obligations - GSE residential 48,851 149 6 9,792 95 10 58,643 244 16 State and political subdivisions 2,952 4 3 146 1 1 3,098 5 4 Corporate bonds — — 0 — — 0 — — 0 Total temporarily impaired debt securities $ 55,791 $ 157 10 $ 37,827 $ 284 16 $ 93,618 $ 441 26 December 31, 2018 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities (Dollars in thousands) Available-for-Sale Debt Securities Mortgage-backed - GSE residential $ 66,232 $ 369 10 $ 44,280 $ 1,721 11 $ 110,512 $ 2,090 21 Collateralized mortgage obligations - GSE residential 4,639 42 1 68,362 1,729 20 73,001 1,771 21 State and political subdivisions 85,181 1,210 68 97,721 3,235 74 182,902 4,445 142 Corporate bonds 723 26 1 — — 0 723 26 1 Total temporarily impaired debt securities $ 156,775 $ 1,647 80 $ 210,363 $ 6,685 105 $ 367,138 $ 8,332 185 The unrealized losses on the Company’s investments in state and political subdivisions were caused by interest rate changes and adjustments in credit ratings. The contractual terms of those investments do not permit the issuer to settle the securities at a price less than the amortized cost basis of the investments. The unrealized losses on the Company’s investments in collateralized mortgage-backed securities and corporate bonds were caused by interest rate changes and market assumptions about prepayment speeds. The Company expects to recover the amortized cost basis over the term of the securities, excluding a previously disclosed impaired security. Because the Company does not intend to sell the investments and it is not more likely than not the Company will be required to sell the investments before recovery of their amortized cost basis, which may be maturity, the Company does not consider those investments to be other-than-temporarily impaired (‘‘OTTI’’) at September 30, 2019 . Gross gains of $506.2 thousand and $2.0 million and gross losses of $39.4 thousand and $1.4 million resulting from sales of available-for-sale securities were realized for the nine-months ended September 30, 2019 and 2018 , respectively. Equity Securities Equity securities consist of Community Reinvestment Act mutual funds. The fair value of the equity securities was $2.2 million and $2.1 million at September 30, 2019 and December 31, 2018 , respectively. Prior to January 1, 2019 , equity securities were stated at fair value with unrealized gains and losses reported as a separate component of accumulated other comprehensive income, net of tax. A net unrealized loss of $68.7 thousand had been recognized in accumulated other comprehensive income as of December 31, 2018 . On January 1, 2019 , the unrealized loss was reclassified out of accumulated other comprehensive income and into retained earnings with subsequent changes in fair value being recognized in other non-interest income. The following is a summary of the recorded fair value and the unrealized and realized gains and losses recognized in net income on available-for-sale equity securities: September 30, 2019 Three months ended Nine months ended (Dollars in thousands) Net gains recognized during the period on equity securities $ 16 $ 72 Less: net gains recognized during the period on equity securities sold during the period — — Unrealized gain recognized during the reporting period on equity securities still held at the reporting date $ 16 $ 72

Loans and Allowance for Loan Le

Loans and Allowance for Loan Leases	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Loans and Allowance for Loan Losses	Loans and Allowance for Loan Losses Categories of loans at September 30, 2019 and December 31, 2018 include: September 30, 2019 December 31, 2018 (Dollars in thousands) Commercial $ 1,312,647 $ 1,134,414 Energy 396,132 358,283 Commercial real estate 993,153 846,561 Construction and land development 527,582 440,032 Residential real estate 365,435 246,275 Equity lines of credit 22,192 20,286 Consumer installment 21,552 23,528 Gross loans 3,638,693 3,069,379 Less: Allowance for loan losses 42,995 37,826 Less: Net deferred loan fees and costs 8,901 8,632 Net loans $ 3,586,797 $ 3,022,921 The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to income. Loan losses are charged against the allowance when management believes the loan balance is not collectible. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of its ability to collect the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. The allowance consists of allocated and general components. The allocated component relates to loans that are classified as impaired. For those loans that are classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component covers unclassified loans and is based on historical charge-off experience and expected loss given default derived from the Company’s internal risk rating process and loan categories. Other adjustments may be made to the allowance for pools of loans after an assessment of internal or external influences on credit quality that are not fully reflected in the historical loss or risk rating data. The following tables summarize the activity in the allowance for loan losses by portfolio segment and disaggregated based on the Company’s impairment methodology. The allocation in one portfolio segment does not preclude its availability to absorb losses in other segments: Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Three months ended September 30, 2019 Allowance for loan losses Beginning balance $ 22,975 $ 7,300 $ 7,533 $ 2,602 $ 2,138 $ 155 $ 149 $ 42,852 Provision charged to expense 3,535 1,077 (249 ) 414 82 5 (14 ) 4,850 Charge-offs (1,700 ) (3,000 ) — — — — (8 ) (4,708 ) Recoveries 1 — — — — — — 1 Ending balance $ 24,811 $ 5,377 $ 7,284 $ 3,016 $ 2,220 $ 160 $ 127 $ 42,995 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Three months ended September 30, 2018 Allowance for loan losses Beginning balance $ 11,739 $ 7,957 $ 6,584 $ 2,530 $ 1,103 $ 170 $ 114 $ 30,197 Provision charged to expense 1,102 1,184 315 137 261 4 (3 ) 3,000 Charge-offs (97 ) — — — — — — (97 ) Recoveries 439 — — — — — 1 440 Ending balance $ 13,183 $ 9,141 $ 6,899 $ 2,667 $ 1,364 $ 174 $ 112 $ 33,540 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Nine months ended September 30, 2019 Allowance for loan losses Beginning balance $ 16,584 $ 10,262 $ 6,755 $ 2,475 $ 1,464 $ 159 $ 127 $ 37,826 Provision charged to expense 11,166 (2,461 ) 529 541 756 1 18 10,550 Charge-offs (2,954 ) (3,000 ) — — — — (19 ) (5,973 ) Recoveries 15 576 — — — — 1 592 Ending balance $ 24,811 $ 5,377 $ 7,284 $ 3,016 $ 2,220 $ 160 $ 127 $ 42,995 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Nine months ended September 30, 2018 Allowance for loan losses Beginning balance $ 11,378 $ 7,726 $ 4,668 $ 1,200 $ 905 $ 122 $ 92 $ 26,091 Provision charged to expense 2,031 2,671 2,231 1,467 459 77 64 9,000 Charge-offs (681 ) (1,256 ) — — — (25 ) (45 ) (2,007 ) Recoveries 455 — — — — — 1 456 Ending balance $ 13,183 $ 9,141 $ 6,899 $ 2,667 $ 1,364 $ 174 $ 112 $ 33,540 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) September 30, 2019 Ending balance Individually evaluated for impairment $ 10,398 $ 854 $ 343 $ — $ 219 $ — $ — $ 11,814 Collectively evaluated for impairment $ 14,413 $ 4,523 $ 6,941 $ 3,016 $ 2,001 $ 160 $ 127 $ 31,181 Allocated to loans: Individually evaluated for impairment $ 66,162 $ 10,226 $ 16,544 $ — $ 2,537 $ — $ — $ 95,469 Collectively evaluated for impairment $ 1,246,485 $ 385,906 $ 976,609 $ 527,582 $ 362,898 $ 22,192 $ 21,552 $ 3,543,224 Ending balance $ 1,312,647 $ 396,132 $ 993,153 $ 527,582 $ 365,435 $ 22,192 $ 21,552 $ 3,638,693 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) December 31, 2018 Ending balance Individually evaluated for impairment $ 5,814 $ 3,108 $ 473 $ — $ 5 $ — $ — $ 9,400 Collectively evaluated for impairment $ 10,770 $ 7,154 $ 6,282 $ 2,475 $ 1,459 $ 159 $ 127 $ 28,426 Allocated to loans: Individually evaluated for impairment $ 78,147 16,250 $ 15,227 $ — $ 2,027 $ — $ — $ 111,651 Collectively evaluated for impairment $ 1,056,267 $ 342,033 $ 831,334 $ 440,032 $ 244,248 $ 20,286 $ 23,528 $ 2,957,728 Ending balance $ 1,134,414 $ 358,283 $ 846,561 $ 440,032 $ 246,275 $ 20,286 $ 23,528 $ 3,069,379 Credit Risk Profile The Company analyzes its loan portfolio based on an internal rating category (grades 1 - 8), portfolio segment and payment activity. These categories are utilized to develop the associated allowance for loan losses. A description of the loan grades and segments follows: Loan Grades • Pass & Watch (risk rating 1 - 4) - Considered satisfactory. Includes borrowers that generally maintain good liquidity and financial condition or the credit is currently protected with sales trends remaining flat or declining. Most ratios compare favorably with industry norms and Company policies. Debt is programmed and timely repayment is expected. • Special Mention (risk rating 5) - Borrowers generally exhibit adverse trends in operations or an imbalanced position in their balance sheet that has not reached a point where repayment is jeopardized. Credits are currently protected but, if left uncorrected, the potential weaknesses may result in deterioration of the repayment prospects for the credit or in the Company’s credit or lien position at a future date. These credits are not adversely classified and do not expose the Company to enough risk to warrant adverse classification. • Substandard (risk rating 6) - Credits generally exhibit a well-defined weakness(es) that jeopardize repayment. Credits are inadequately protected by the current worth and paying capacity of the obligor or of the collateral pledged. A distinct possibility exists that the Company will sustain some loss if deficiencies are not corrected. Loss potential, while existing in the aggregate amount of substandard assets, does not have to exist in individual assets classified substandard. • Doubtful (risk rating 7) - Credits which exhibit weaknesses inherent in a substandard credit with the added characteristic that these weaknesses make collection or liquidation in full highly questionable and improbable based on existing facts, conditions and values. Because of reasonably specific pending factors, which may work to the advantage and strengthening of the assets, classification as a loss is deferred until its more exact status may be determined. • Loss (risk rating 8) - Credits which are considered uncollectible or of such little value that their continuance as a bankable asset is not warranted. Loan Portfolio Segments • Commercial - Includes loans to commercial customers for use in financing working capital needs, equipment purchases and expansions. Repayment is primarily from the cash flow of a borrower’s principal business operation. Credit risk is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations. • Energy - Includes loans to oil and natural gas customers for use in financing working capital needs, exploration and production activities, and acquisitions. The loans in this category are repaid primarily from the conversion of crude oil and natural gas to cash. Credit risk is driven by creditworthiness of a borrower and the economic conditions that impact the cash flow stability from business operations. • Commercial Real Estate - Loans typically involve larger principal amounts, and repayment of these loans is generally dependent on the successful operations of the property securing the loan or the business conducted on the property securing the loan. These are viewed primarily as cash flow loans and secondarily as loans secured by real estate. Credit risk may be impacted by the creditworthiness of a borrower, property values and the local economies in the company’s market areas. • Construction and Land Development - Loans are usually based upon estimates of costs and estimated value of the completed project and include independent appraisal reviews and a financial analysis of the developers and property owners. Sources of repayment include permanent loans, sales of developed property or an interim loan commitment from the Company until permanent financing is obtained. These loans are higher risk than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, general economic conditions and the availability of long-term financing. Credit risk may be impacted by the creditworthiness of a borrower, property values and the local economies in the company’s market areas. • Residential Real Estate - The loans are generally secured by owner-occupied 1-4 family residences. Repayment of these loans is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans can be impacted by economic conditions within or outside the company’s market areas that might impact either property values or a borrower’s personal income. Risk is mitigated by the fact that the loans are of smaller individual amounts and spread over many borrowers. • Equity Lines of Credit - The loans are revolving lines of credit extended to consumers secured through a first or second mortgage on their personal residence. Repayment is primarily dependent on the personal income and credit rating of the borrowers. Credit risk in these loans may be impacted by economic conditions within the company’s market areas that may impact either property values or a borrower’s personal income. • Consumer Installment - The loan portfolio consists of various term and line of credit loans such as automobile loans and loans for other personal purposes. Repayment comes from a borrower’s income sources that are typically independent of the loan purpose. Credit risk is driven by consumer economic factors (such as unemployment and general economic conditions in the Company’s market area) and the creditworthiness of a borrower. The following tables present the credit risk profile of the Company’s loan portfolio based on an internal rating category (grades 1 - 8), portfolio segment and payment activity: Pass & Watch Special Mention Substandard Doubtful Loss Total (Dollars in thousands) September 30, 2019 Commercial $ 1,217,280 $ 29,350 $ 66,017 $ — $ — $ 1,312,647 Energy 378,533 10,342 2,580 4,677 — 396,132 Commercial real estate 976,262 7,529 8,402 960 — 993,153 Construction and land development 527,582 — — — — 527,582 Residential real estate 362,625 273 2,537 — — 365,435 Equity lines of credit 22,192 — — — — 22,192 Consumer installment 21,552 — — — — 21,552 $ 3,506,026 $ 47,494 $ 79,536 $ 5,637 $ — $ 3,638,693 Pass & Watch Special Mention Substandard Doubtful Loss Total (Dollars in thousands) December 31, 2018 Commercial $ 1,056,505 $ — $ 73,824 $ 4,085 $ — $ 1,134,414 Energy 339,720 5,376 13,187 — — 358,283 Commercial real estate 831,290 6,950 7,209 1,112 — 846,561 Construction and land development 440,032 — — — — 440,032 Residential real estate 244,178 70 2,027 — — 246,275 Equity lines of credit 20,286 — — — — 20,286 Consumer installment 23,528 — — — — 23,528 $ 2,955,539 $ 12,396 $ 96,247 $ 5,197 $ — $ 3,069,379 The Company evaluates the loan risk grading system definitions, portfolio segment definitions and allowance for loan loss methodology on an ongoing basis. No significant changes were made to either during the past year. Loan Portfolio Aging Analysis The following tables present the Company’s loan portfolio aging analysis of the recorded investment in loans as of September 30, 2019 and December 31, 2018 : 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Total Past Due Current Total Loans Receivable Loans >= 90 Days and Accruing (Dollars in thousands) September 30, 2019 Commercial $ 42,039 $ 2,785 $ 1,101 $ 45,925 $ 1,266,722 $ 1,312,647 $ — Energy 7,122 — 5,319 12,441 383,691 396,132 642 Commercial real estate 317 — 93 410 992,743 993,153 — Construction and land development 12,345 — — 12,345 515,237 527,582 — Residential real estate 68 — 2,012 2,080 363,355 365,435 — Equity lines of credit — — — — 22,192 22,192 — Consumer installment 50 — — 50 21,502 21,552 — $ 61,941 $ 2,785 $ 8,525 $ 73,251 $ 3,565,442 $ 3,638,693 $ 642 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Total Past Due Current Total Loans Receivable Loans >= 90 Days and Accruing (Dollars in thousands) December 31, 2018 Commercial $ 1,040 $ — $ 4,137 $ 5,177 $ 1,129,237 $ 1,134,414 $ — Energy 1,994 — 9,218 11,212 347,071 358,283 — Commercial real estate — 425 2,253 2,678 843,883 846,561 — Construction and land development — — — — 440,032 440,032 — Residential real estate 28 194 — 222 246,053 246,275 — Equity lines of credit — — — — 20,286 20,286 — Consumer installment — — — — 23,528 23,528 — $ 3,062 $ 619 $ 15,608 $ 19,289 $ 3,050,090 $ 3,069,379 $ — Impaired Loans A loan is considered impaired, in accordance with the impairment accounting guidance (ASC 310-10-35-16), when based on current information and events, it is probable the Company will be unable to collect all amounts due from the borrower in accordance with the contractual terms of the loan. Impaired loans include nonperforming loans but also include loans modified in troubled debt restructurings where concessions have been granted to borrowers experiencing financial difficulties. The intent of concessions is to maximize collection. Groups of loans with similar risk characteristics are collectively evaluated for impairment based on the group’s historical loss experience adjusted for changes in trends, conditions and other relevant factors that affect repayment of the loans. The following tables present impaired loans for the periods ended September 30, 2019 and December 31, 2018 : Unpaid Recorded Balance Principal Balance Specific Allowance (Dollars in thousands) September 30, 2019 Loans without a specific valuation Commercial $ 25,770 $ 25,770 $ — Energy 2,969 2,969 — Commercial real estate 12,501 12,501 — Construction and land development — — — Residential real estate 2,195 2,195 — Equity lines of credit — — — Consumer installment — — — Loans with a specific valuation Commercial 40,392 40,392 10,398 Energy 7,257 7,257 854 Commercial real estate 4,043 4,043 343 Construction and land development — — — Residential real estate 342 342 219 Equity lines of credit — — — Consumer installment — — — Total Commercial 66,162 66,162 10,398 Energy 10,226 10,226 854 Commercial real estate 16,544 16,544 343 Construction and land development — — — Residential real estate 2,537 2,537 219 Equity lines of credit — — — Consumer installment — — — $ 95,469 $ 95,469 $ 11,814 Unpaid Recorded Balance Principal Balance Specific Allowance (Dollars in thousands) December 31, 2018 Loans without a specific valuation Commercial $ 40,151 $ 40,151 $ — Energy 2,789 2,789 — Commercial real estate 7,059 7,059 — Construction and land development — — — Residential real estate 1,964 1,964 — Equity lines of credit — — — Consumer installment — — — Loans with a specific valuation Commercial 37,996 37,996 5,814 Energy 13,461 13,461 3,108 Commercial real estate 8,168 8,168 473 Construction and land development — — — Residential real estate 63 63 5 Equity lines of credit — — — Consumer installment — — — Total Commercial 78,147 78,147 5,814 Energy 16,250 16,250 3,108 Commercial real estate 15,227 15,227 473 Construction and land development — — — Residential real estate 2,027 2,027 5 Equity lines of credit — — — Consumer installment — — — $ 111,651 $ 111,651 $ 9,400 The table below shows interest income recognized during the three- and nine- month periods ended September 30, 2019 and September 30, 2018 for impaired loans held at the end of each period: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Commercial $ 386 $ 402 $ 862 $ 1,110 Energy 98 93 324 369 Commercial real estate 200 88 613 291 Construction and land development — — — — Residential real estate 8 17 17 52 Equity lines of credit — — — — Consumer installment — — — — Total interest income recognized $ 692 $ 600 $ 1,816 $ 1,822 The table below shows the average balance of impaired loans during the three- and nine- month periods ended September 30, 2019 and September 30, 2018 by loan category for impaired loans held at the end of each period: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 (Dollars in thousands) Commercial $ 54,410 $ 27,671 $ 49,265 $ 26,849 Energy 13,623 17,683 15,091 18,992 Commercial real estate 16,690 8,055 16,528 8,101 Construction and land development — — — — Residential real estate 2,538 2,046 2,354 2,059 Equity lines of credit — — — — Consumer installment — — — — Total average impaired loans $ 87,261 $ 55,455 $ 83,238 $ 56,001 Non-accrual Loans Nonperforming loans are loans for which the Company does not record interest income. The accrual of interest on mortgage and commercial loans is discontinued at the time the loan is 90 days past due unless the credit is well secured and in process of collection. Past due status is based on contractual terms of the loan. In all cases, loans are placed on non-accrual or charged off at an earlier date, if collection of principal or interest is considered doubtful. All interest accrued but not collected for loans that are placed on non-accrual or charged off are reversed against interest income. The interest on these loans is accounted for on the cash basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. The following table presents the Company’s non-accrual loans at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 (Dollars in thousands) Commercial $ 34,201 $ 4,781 Energy 4,677 9,219 Commercial real estate 2,680 3,517 Construction and land development — — Residential real estate 2,068 301 Equity lines of credit — — Consumer installment — — Total non-accrual loans $ 43,626 $ 17,818 Troubled Debt Restructurings Restructured loans are those extended to borrowers who are experiencing financial difficulty and who have been granted a concession. The modification of terms typically includes the extension of maturity, reduction or deferment of monthly payment, or reduction of the stated interest rate. The table below presents loans restructured during the three- and nine- months ended September 30, 2019 and 2018 , including the post-modification outstanding balance and the type of concession made: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2018 September 30, 2019 September 30, 2018 (Dollars in thousands) Commercial - Deferred payment $ — $ — $ — $ 61 - Reduction of monthly payment — — 994 — - Extension of maturity date — — 30,005 300 Energy - Reduction of monthly payment — — — 2,972 Commercial real estate - Reduction of monthly payment — — 3,767 — - Interest rate reduction — 1,153 — 2,256 Total troubled debt restructurings $ — $ 1,153 $ 34,766 $ 5,589 As of September 30, 2019 and December 31, 2018 , the Company had $896 thousand and $0 , respectively, in commitments to borrowers whose terms have been modified in troubled debt restructurings. As of September 30, 2019, the modifications related to the troubled debt restructurings above did not impact the allowance for loan losses because the loans were previously impaired and evaluated on an individual basis or enough collateral was obtained to provide an additional commitment. The restructured loans had a total specific valuation allowance of $8.8 million and $2.4 million as of September 30, 2019 and December 31, 2018 , respectively. The balance of restructured loans is provided below as of September 30, 2019 and December 31, 2018 . In addition, the balance of those loans that are in default at any time during the past twelve months at September 30, 2019 and December 31, 2018 is provided below: September 30, 2019 December 31, 2018 Number of Loans Outstanding Balance Balance 90 days past due at any time during previous 12 months (1) Number of Loans Outstanding Balance Balance 90 days past due at any time during previous 12 months (1) (Dollars in thousands) Commercial 7 $ 36,865 $ — 6 $ 5,022 $ 55 Energy 2 2,969 — 2 3,631 — Commercial real estate 3 4,947 — 2 1,382 — Construction and land development — — — — — — Residential real estate — — — 1 237 — Equity lines of credit — — — — — — Consumer installment — — — — — — Total restructured loans 12 $ 44,781 $ — 11 $ 10,272 $ 55 (1) Default is considered to mean 90 days or more past due as to interest or principal.

Derivatives and Hedging

Derivatives and Hedging	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives and Hedging	Derivatives and Hedging Derivatives not designated as hedges are not speculative and result from a service the Company provides to clients. The Company executes interest rate swaps with customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting derivatives that the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings. During the quarter ended September 30, 2019, the Company changed an input associated with the fair market value related to derivatives not designated as hedges. The model utilized to calculate the non-performance risk, also known as the credit valuation adjustment, or CVA, was adjusted from a more conservative default methodology to a review of the historical defaults recognized by the Company. Management believes this change better aligns with the Company’s credit methodology and underwriting standards. As a result of the change in methodology, the Company increased swap fee income, net by approximately $800 thousand , related to swaps closed on or before June 30, 2019. If no defaults occur for derivatives not designated as hedges, the change in methodology will lower future swap fee income, net by the same amount. As of September 30, 2019 and December 31, 2018 , the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships: September 30, 2019 December 31, 2018 Product Number of Instruments Notional Amount Number of Instruments Notional Amount (Dollars in thousands) Back-to-back swaps 46 $ 308,960 20 $ 77,709 The table below presents the fair value of the Company’s derivative financial instruments and their classification on the Balance Sheet as of September 30, 2019 and December 31, 2018 : Asset Derivatives Liability Derivatives Balance Sheet September 30, December 31, Balance Sheet September 30, December 31, Location 2019 2018 Location 2019 2018 (Dollars in thousands) Derivatives not designated as hedging instruments Interest rate products Other assets $ 13,735 $ 1,051 Other liabilities $ 13,782 $ 1,136 The effect of the Company’s derivative financial instruments that are not designated as hedging instruments are reported on the Statements of Income as swap fee income, net. The effect of the Company’s derivative financial instruments gain and loss are reported on the Statements of Cash Flows within other assets and other liabilities. The tables below show a gross presentation, the effects of offsetting, and a net presentation of the Company’s derivatives as of September 30, 2019 and December 31, 2018 : September 30, 2019 (Dollars in thousands) Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts of Recognized Assets and Liabilities Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Cash Collateral Received Net Amount Offsetting of derivative assets Derivatives $ 13,735 $ — $ 13,735 $ — $ — $ 13,735 Offsetting of derivative liabilities Derivatives $ 13,782 $ — $ 13,782 $ — $ — $ 13,782 December 31, 2018 (Dollars in thousands) Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts of Recognized Assets and Liabilities Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Cash Collateral Received Net Amount Offsetting of derivative assets Derivatives $ 1,051 $ — $ 1,051 $ 72 $ — $ 979 Offsetting of derivative liabilities Derivatives $ 1,136 $ — $ 1,136 $ 72 $ — $ 1,064 The net presentation above can be reconciled to the tabular disclosure of fair value. As of September 30, 2019 , the Company had minimum collateral posting thresholds with certain of its derivative counter-parties and had posted collateral of $18.2 million . If the Company had breached any of these provisions at September 30, 2019 , it could have been required to settle its obligations under the agreements at their termination value of $13.8 million .

Interest-Bearing Deposits and B

Interest-Bearing Deposits and Borrowings	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Interest-Bearing Deposits and Borrowings	Interest-Bearing Deposits and Borrowings The scheduled maturities, excluding interest, of the Company’s borrowings at September 30, 2019 were as follows: September 30, 2019 Within One Year One to Two Years Two to Three Years Three to Four Years Four to Five Years After Five Years Total (Dollars in thousands) Time deposits $ 822,439 $ 216,486 $ 105,559 $ 52,055 $ 25,215 $ — $ 1,221,754 Fed funds purchased & repurchase agreements 49,810 — — — — — 49,810 FHLB borrowings 24,000 76,500 16,500 39,704 — 151,100 307,804 Trust preferred securities (1) — — — — — 912 912 $ 896,249 $ 292,986 $ 122,059 $ 91,759 $ 25,215 $ 152,012 $ 1,580,280 (1) The contract value of the trust preferred securities is $2.5 million

Change in Accumulated Other Com

Change in Accumulated Other Comprehensive Income (AOCI)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Change in Accumulated Other Comprehensive Income (AOCI)	Change in Accumulated Other Comprehensive Income (AOCI) Amounts reclassified from AOCI and the affected line items in the consolidated Statements of Income during the three and nine months ended September 30, 2019 and 2018 , were as follows: Three Months Ended Nine Months Ended September 30, September 30, Affected Line Item in the 2019 2018 2019 2018 Statements of Income (Dollars in thousands) Unrealized gains on available-for-sale securities $ 34 $ 195 $ 467 $ 608 Gain on sale of available for sale securities Amount reclassified before tax 34 195 467 608 Less: tax effect 9 47 115 149 Income tax expense Net reclassified amount $ 25 $ 148 $ 352 $ 459

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Regulatory Matters	Regulatory Matters The Company and the Bank are subject to various regulatory capital requirements administered by the federal 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. Management believes that, as of September 30, 2019 , the Company and the Bank meet all capital adequacy requirements to which they are subject. The Company’s and the Bank’s actual capital amounts and ratios as of September 30, 2019 and December 31, 2018 are presented in the following table: Actual Minimum Capital Required - Basel III Phase-In Schedule Minimum Capital Required - Basel III Fully Phase-In Required to be Considered Well Capitalized Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) September 30, 2019 Total Capital to Risk-Weighted Assets Consolidated $ 618,407 13.9 % $ 467,160 10.5 % $ 467,160 10.5 % N/A N/A Bank 567,667 12.8 467,085 10.5 467,085 10.5 $ 444,843 10.0 % Tier I Capital to Risk-Weighted Assets Consolidated 575,412 12.9 378,177 8.5 378,177 8.5 N/A N/A Bank 524,672 11.8 378,117 8.5 378,117 8.5 355,875 8.0 Common Equity Tier 1 to Risk-Weighted Assets Consolidated 574,500 12.9 311,440 7.0 311,440 7.0 N/A N/A Bank 524,672 11.8 311,390 7.0 311,390 7.0 289,148 6.5 Tier I Capital to Average Assets Consolidated 575,412 12.6 183,152 4.0 183,152 4.0 N/A N/A Bank $ 524,672 11.5 % $ 183,109 4.0 % $ 183,109 4.0 % $ 228,886 5.0 % December 31, 2018 Total Capital to Risk-Weighted Assets Consolidated $ 521,111 13.5 % $ 380,873 9.9 % $ 404,979 10.5 % N/A N/A Bank 481,287 12.5 380,369 9.9 404,443 10.5 $ 385,184 10.0 % Tier I Capital to Risk-Weighted Assets Consolidated 483,285 12.5 303,734 7.9 327,840 8.5 N/A N/A Bank 443,461 11.5 303,332 7.9 327,406 8.5 308,147 8.0 Common Equity Tier 1 to Risk-Weighted Assets Consolidated 453,049 11.7 245,880 6.4 269,986 7.0 N/A N/A Bank 443,461 11.5 245,555 6.4 269,629 7.0 250,369 6.5 Tier I Capital to Average Assets Consolidated 483,285 12.4 155,538 4.0 155,538 4.0 N/A N/A Bank $ 443,461 11.4 % $ 155,420 4.0 % $ 155,420 4.0 % $ 194,275 5.0 %

Revenue from Contracts with Cus

Revenue from Contracts with Customers	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The Company adopted ASU 2014-09, ‘‘ Revenue from Contracts with Customers (Topic 606)’’ and its related amendments as of January 1, 2019 using the modified retrospective approach. The implementation had no material impact on the measurement or recognition of revenue of either current or prior periods. The categories are selected based on the nature, amount, timing, and uncertainty of revenue and cash flows. The following presents descriptions of revenue categories within the scope of ASU 2014-09 (ASC 606): Service charges and fees (rebates) on customer accounts - This segment consists of monthly fees for the services rendered on customer deposit accounts, including maintenance charges, overdraft fees, and processing fees. The monthly fee structures are typically based on type of account, volume, and activity. The customer is typically billed monthly and pays the bill from their deposit account. The Company satisfies the performance obligation related to providing depository accounts monthly as transactions are processed and deposit service charge revenue is recorded. ATM and credit card interchange income - This segment consists of fees charged for use of the Company’s ATMs, as well as, an interchange fee with credit card and debit card service providers. ATM fees and interchange fees are based on the number of transactions, as well as, the underlying agreements. Customers are typically billed monthly. The Company satisfies the performance obligation related to ATM and interchange fees monthly as transactions are processed and revenue is recorded. International fees - This segment consists of fees earned from foreign exchange transactions and preparation of international documentation. International fees are based on underlying agreements that describe the Company’s performance obligation and the related fee. Customers are typically billed and cash is received once the service or transaction is complete. The Company satisfies the performance obligation related to international fees monthly as transactions are processed and revenue is recorded. Other fees - This segment consists of numerous, smaller fees such as wire transfer fees, check cashing fees, and check printing fees. Other fees are typically billed to customers on a monthly basis. Performance obligations for other fees are satisfied at the time that the service is rendered. The following table disaggregates the non-interest income subject to ASU 2014-09 by category: Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Non-interest income subject to ASU 2014-09 Service charges and fees (rebates) on customer accounts $ 72 $ (100 ) $ 441 $ 506 ATM and credit card interchange income 476 301 1,312 827 International fees 199 160 506 579 Other fees 12 10 104 30 Total non-interest income from contracts with customers 759 371 2,363 1,942 Non-interest income not subject to ASU 2014-09 Other non-interest income 2,453 814 4,166 2,946 Total non-interest income $ 3,212 $ 1,185 $ 6,529 $ 4,888

Equity-Based Compensation

Equity-Based Compensation	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Equity-Based Compensation	Equity-Based Compensation The Company issues stock-based compensation in the form of nonvested restricted stock and stock appreciation rights under the 2018 Omnibus Equity Incentive Plan. In addition, the Company has an Employee Stock Purchase Plan that was indefinitely suspended effective April 1, 2019. The aggregate number of shares authorized for future issuance under the Omnibus Plan is 2,275,721 shares as of September 30, 2019 . The table below summarizes the stock-based compensation for the three and nine-months ended September 30, 2019 and 2018 : Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Stock appreciation rights $ 446 $ 220 $ 977 $ 1,905 Performance based restricted units and stock 159 28 409 524 Restricted stock units 510 280 1,528 1,957 Restricted stock awards 209 — 656 — Employee stock purchase plan — 38 36 127 Total stock-based compensation $ 1,324 $ 566 $ 3,606 $ 4,513

Income Tax

Income Tax	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Income Tax	Income Tax A reconciliation of the income tax expense (benefit) at the statutory rate to the Company’s actual income tax expense (benefit) is shown below: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Computed at the statutory rate (21%) $ 2,725 $ 1,529 $ 7,241 $ 1,754 Increase (decrease) resulting from Tax-exempt income (722 ) (860 ) (2,147 ) (2,754 ) Nondeductible expenses 71 87 208 261 State tax credit — — (1,361 ) — State income taxes 566 124 1,526 245 Equity based compensation (5 ) — (66 ) (400 ) Other adjustments (43 ) 44 (93 ) (10 ) Actual tax expense (benefit) $ 2,592 $ 924 $ 5,308 $ (904 ) The tax effects of temporary differences related to deferred taxes shown on the consolidated Balance Sheets are presented below: September 30, 2019 December 31, 2018 (Dollars in thousands) Deferred tax assets Net unrealized loss on securities available-for-sale $ — $ 986 Allowance for loan losses 10,637 9,358 Lease incentive 306 329 Impairment of available for sale securities 498 498 Valuation allowance on real estate — 396 Loan fees 2,202 2,135 Net operating loss carryover 370 398 Accrued expenses 105 1,927 Deferred compensation 2,317 1,838 Alternative minimum tax credits — 2,365 State tax credit 3,517 2,506 Other 63 79 20,015 22,815 Deferred tax liability Fair market value adjustments - trust preferred securities (350 ) (356 ) Net unrealized gain on securities available-for-sale (5,812 ) — FHLB stock basis (936 ) (739 ) Premises and equipment (4,301 ) (5,019 ) Other (1,187 ) (385 ) (12,586 ) (6,499 ) Net deferred tax asset $ 7,429 $ 16,316

Disclosures about Fair Value of

Disclosures about Fair Value of Financial Instruments	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Disclosures about Fair Value of Financial Instruments	Disclosures about Fair Value of Financial Instruments Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Fair measurements must maximize the use of observable inputs and minimize the use of unobservable inputs. There is a hierarchy of three levels of inputs that may be used to measure fair value: Level 1 Quoted prices in active markets for identical assets or liabilities Level 2 Observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 Unobservable inputs supported by little or no market activity and significant to the fair value of the assets or liabilities. Recurring Measurements The following tables present the fair value measurements of assets and liabilities recognized in the accompanying consolidated Balance Sheets measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2019 and December 31, 2018 : September 30, 2019 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Available-for-sale securities Mortgage-backed - GSE residential $ 160,714 $ — $ 160,714 $ — Collateralized mortgage obligations - GSE residential 148,675 — 148,675 — State and political subdivisions 420,009 — 420,009 — Corporate bonds 1,536 — 1,536 — Mutual funds 2,159 — 2,159 — Derivative assets 13,735 — 13,735 — Derivative liabilities $ 13,782 $ — $ 13,782 $ — December 31, 2018 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Available-for-sale securities Mortgage-backed - GSE residential $ 129,287 $ — $ 129,287 $ — Collateralized mortgage obligations - GSE residential 152,626 — 152,626 — State and political subdivisions 378,058 — 378,058 — Corporate bonds 1,657 — 1,657 — Mutual funds 2,050 — 2,050 — Derivative assets 1,051 — 1,051 — Derivative liabilities $ 1,136 $ — $ 1,136 $ — Following is a description of the valuation methodologies and inputs used for assets and liabilities measured at fair value on a recurring basis and recognized in the Company’s accompanying consolidated balance sheets. Available-for-Sale Securities Where quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. If quoted market prices are not available, then fair values are estimated by using quoted prices of securities with similar characteristics or independent asset pricing services and pricing models, the inputs of which are market-based or independently sourced market parameters, including, but not limited to, yield curves, interest rates, volatilities, prepayments, defaults, cumulative loss projections and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. Derivatives Fair value of the interest rate swaps is obtained from independent pricing services based on quoted market prices for similar derivative contracts. Nonrecurring Measurements The following tables present assets measured at fair value on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2019 and December 31, 2018 : September 30, 2019 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Collateral-dependent impaired loans $ 40,220 $ — $ — $ 40,220 Premises and equipment held-for-sale — — — — Foreclosed assets held for sale $ 2,471 $ — $ — $ 2,471 December 31, 2018 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Collateral-dependent impaired loans $ 50,288 $ — $ — $ 50,288 Premises and equipment held-for-sale 3,444 — 3,444 — Foreclosed assets held for sale $ — $ — $ — $ — Following is a description of the valuation methodologies and inputs used for assets measured at fair value on a nonrecurring basis and recognized in the accompanying consolidated balance sheets. Collateral-dependent Impaired Loans, Net of ALLL The estimated fair value of collateral-dependent impaired loans is based on the appraised fair value of the collateral, less estimated cost to sell. Collateral-dependent impaired loans are classified within Level 3 of the fair value hierarchy. The Company considers the appraisal or evaluation as the starting point for determining fair value and then considers other factors and events in the environment that may affect the fair value. The impaired loans had a carrying value of $52.0 million and $59.7 million and were reduced by specific valuation allowance allocations totaling $11.8 million and $9.4 million at September 30, 2019 and December 31, 2018 , respectively. Appraisals of the collateral underlying collateral-dependent loans are obtained when the loan is determined to be collateral-dependent and subsequently as deemed necessary by the Office of the Chief Credit Officer. Appraisals are reviewed for accuracy and consistency by the Office of the Chief Credit Officer. The appraised values are reduced by discounts to consider lack of marketability and estimated cost to sell if repayment or satisfaction of the loan is dependent on the sale of the collateral. These discounts and estimates are developed by the Office of the Chief Credit Officer by comparison to historical results. Premises and Equipment Held-for-Sale The estimated fair value of premises and equipment held-for-sale is based on the appraised fair value of the collateral, less estimated cost to sell. Foreclosed Assets Held-for-Sale The estimated fair value of foreclosed assets held-for-sale is based on the appraised fair value of the collateral, less estimated cost to sell. Unobservable (Level 3) Inputs The following tables present quantitative information about unobservable inputs used in nonrecurring Level 3 fair value measurements at September 30, 2019 and December 31, 2018 : September 30, 2019 Fair Value Valuation Techniques Unobservable Inputs Range (Weighted Average) (Dollars in thousands) Collateral-dependent impaired loans $ 40,220 Market comparable properties Marketability discount 10% - 15% (12%) Foreclosed assets held for sale $ 2,471 Market comparable properties Marketability discount 25% December 31, 2018 Fair Value Valuation Techniques Unobservable Inputs Range (Weighted Average) (Dollars in thousands) Collateral-dependent impaired loans $ 50,288 Market comparable properties Marketability discount 10% - 15% Foreclosed assets held for sale $ — The following tables present the estimated fair values of the Company’s financial instruments at September 30, 2019 and December 31, 2018 : September 30, 2019 Carrying Fair Value Measurements Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial Assets Cash and cash equivalents $ 128,126 $ 128,126 $ — $ — $ 128,126 Available-for-sale securities 733,093 — 733,093 — 733,093 Loans, net of allowance for loan losses 3,586,797 — — 3,607,276 3,607,276 Restricted equity securities 16,053 — — 16,053 16,053 Interest receivable 15,909 — 15,909 — 15,909 Derivative assets 13,735 — 13,735 — 13,735 $ 4,493,713 $ 128,126 $ 762,737 $ 3,623,329 $ 4,514,192 Financial Liabilities Deposits $ 3,658,108 $ 513,832 $ — $ 3,162,740 $ 3,676,572 Federal funds purchased and repurchase agreements 49,810 — 49,809 — 49,809 Federal Home Loan Bank advances 307,804 — 311,583 — 311,583 Other borrowings 912 — 2,054 — 2,054 Interest payable 4,643 — 4,643 — 4,643 Derivative liabilities 13,782 — 13,782 — 13,782 $ 4,035,059 $ 513,832 $ 381,871 $ 3,162,740 $ 4,058,443 December 31, 2018 Carrying Fair Value Measurements Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial Assets Cash and cash equivalents $ 216,541 $ 216,541 $ — $ — $ 216,541 Available-for-sale securities 661,628 — 661,628 — 661,628 Loans, net of allowance for loan losses 3,022,921 — — 3,027,930 3,027,930 Restricted equity securities 14,525 — — 14,525 14,525 Interest receivable 14,092 — 14,092 — 14,092 Derivative assets 1,051 — 1,051 — 1,051 $ 3,930,758 $ 216,541 $ 676,771 $ 3,042,455 $ 3,935,767 Financial Liabilities Deposits $ 3,208,097 $ 484,284 $ — $ 2,696,212 $ 3,180,496 Federal funds purchased and repurchase agreements 75,406 — 75,404 — 75,404 Federal Home Loan Bank advances 312,985 — 298,017 — 298,017 Other borrowings 884 — 2,022 — 2,022 Interest payable 2,868 — 2,868 — 2,868 Derivative liabilities 1,136 — 1,136 — 1,136 $ 3,601,376 $ 484,284 $ 379,447 $ 2,696,212 $ 3,559,943 Following is a description of the valuation methodologies and inputs used for assets and liabilities measured at fair value categorized within level 2 or level 3 above and not yet disclosed: Loans The Company adopted ASU 2016-01 on January 1, 2019. In accordance with its requirements, the fair value of loans as of September 30, 2019 was measured using an exit price notion. Methodologies utilized for this financial statement period are as follows: (i) Income Approach: Fair value is determined based on a discounted cash flow analysis. The discounted cash flow analysis was based on the contractual maturity of the loan and market indications of rates, prepayment speeds, defaults and credit risk; and (ii) Asset Approach: Fair value is determined based on the estimated values of the underlying collateral or individual analysis of receipts. This provides a better indication of value than the contractual income streams as these loans are not performing or exhibit strong signs indicative of non-performance. Fair value has been established in accordance with ASC 820, Fair Value Measurements and Disclosures, and is intended to represent the price that would be received in an orderly transaction between market participants as of the measurement date. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, at least one significant assumption not observable in the market was utilized. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Inputs to these valuation techniques are subjective in nature, involve uncertainties and require significant judgment and therefore cannot be determined with precision. Accordingly, the fair value estimates presented are not necessarily indicative of the amounts to be realized in a current market exchange. For December 31, 2018, fair value was estimated by discounting the future cash flows using the market rates at which similar notes would be made to borrowers with similar credit ratings and for the same remaining maturities. The market rates used were based on current rates the Company would impose for similar loans and reflect a market participant assumption about risks associated with nonperformance, illiquidity, and the structure and term of the loans along with local economic and market conditions. Restricted Equity Securities Fair value is estimated at book value due to restrictions that limit the sale or transfer of such securities. Interest Receivable and Payable The carrying amount approximates fair value. The carrying amount is determined using the interest rate, balance and last payment date. Deposits Fair value of term deposits is estimated by discounting the future cash flows using rates of similar deposits with similar maturities. The estimated fair value of demand, transaction, savings and money market deposits is the book value since rates are regularly adjusted to market rates and amounts are payable on demand at the reporting date. Federal Home Loan Bank Advances Fair value is estimated by discounting the future cash flows using rates of similar advances with similar maturities. These rates were obtained from current rates offered by FHLB. Fed Funds Purchased and Repurchase Agreements Fair value for fed funds purchased is book value. Fair value of repurchase agreements estimated by discounting the future cash flows using rates of similar maturities. Other Borrowings Fair value of the Company’s line of credit with another financial institution is estimated at book value due to its short-term nature. The estimated fair value for the Trust Preferred Securities is based on current borrowing rates currently available to the Company, considering the size and quality of the credit and liquidity of the debt as a security.

Commitments and Credit Risk

Commitments and Credit Risk	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Commitments and Credit Risk	Commitments and Credit Risk The Company had the following commitments at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 (Dollars in thousands) Commitments to originate loans $ 176,598 $ 190,997 Standby letters of credit 35,699 32,439 Lines of credit 1,255,764 1,174,166 Future lease commitment 19,054 19,054 Total $ 1,487,115 $ 1,416,656

Legal and Regulatory Proceeding

Legal and Regulatory Proceedings	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Legal and Regulatory Proceedings	Legal and Regulatory Proceedings General Litigation The Company is subject to claims and lawsuits that arise primarily in the ordinary course of business. It is the opinion of management the disposition or ultimate resolution of such claims and lawsuits will not have a material adverse effect on the consolidated financial position, result of operations and cash flows of the Company.

Nature of Operations and Summ_2

Nature of Operations and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The Company’s accounting and reporting policies conform to accounting principles generally accepted in the United States (‘‘GAAP’’). The consolidated financial statements include the accounts of the Company; the Bank, CFI and CFSA. All significant intercompany accounts and transactions have been eliminated in consolidation. The consolidated interim financial statements are unaudited and certain information and footnote disclosures presented in accordance with GAAP have been condensed or omitted and should be read in conjunction with the Company’s consolidated financial statements, and notes thereto, for the six-months ended June 30, 2019 and year ended December 31, 2018 included in the Company’s prospectus, dated August 14, 2019, filed with the Securities and Exchange Commission (‘‘SEC’’) pursuant to Rule 424(b) of the Securities Act of 1933, as amended, on August 15, 2019, related to the Company’s initial public offering (the ‘‘IPO Prospectus’’). In the opinion of management, the interim financial statements include all adjustments all of which are of a normal, recurring nature necessary for the fair presentation of the financial position, results of operations, and cash flows of the Company and the disclosures made are adequate to make the interim financial information not misleading. The consolidated financial statements have been prepared in accordance with GAAP for interim financial information and the instructions to Form 10-Q adopted by the SEC. There have been no significant changes in the accounting policies of the Company since June 30, 2019, the most recent date financial statements were provided within the IPO Prospectus. The information contained in the financial statements and footnotes for the period ended June 30, 2019 included in the Company’s IPO Prospectus should be referred to in connection with these unaudited interim consolidated financial statements. Operating results for the interim periods disclosed herein are not necessarily indicative of the results that may be expected for a full year or any future period.
Use of Estimates	Use of Estimates The Company has identified accounting policies and estimates that, due to the difficult, subjective or complex judgments and assumptions inherent in those policies and estimates and the potential sensitivity of the Company’s financial statements to those judgments and assumptions, are critical to an understanding of the Company’s financial condition and results of operations. Actual results could differ from those estimates. The Allowance for Loan and Lease Losses, Investment Securities Impairment, Deferred Tax Asset, and Fair Value of Financial Instruments are particularly susceptible to significant change.
Cash Equivalents	Cash Equivalents The Company had $85.0 million of cash and cash equivalents at the Federal Reserve Bank of Kansas City as of September 30, 2019 . The reserve required at September 30, 2019 was approximately $63.3 million . In addition, the Company is at times required to place cash collateral with a third party as part of its back-to-back swap agreements. At September 30, 2019 , approximately $18.2 million
Recent Accounting Pronouncements	Recent Accounting Pronouncements The Company has implemented the following Accounting Standards Updates (‘‘ASU’’) during 2019 : Standard Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2018-07 - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting January 2019 Early adoption Expanded the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees, excluding share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers . The amendments include (1) grants are measured at grant-date fair value of the equity instruments, (2) equity-classified nonemployee share-based payment awards are measured at the grant date, (3) performance based awards are measured based on the probability of satisfying the performance conditions, and (4) in general, non-employee share-based payment awards will continue to be subject to the requirements of ASC 718 unless modified after the good has been delivered, the service has been rendered, any other conditions necessary to earn the right to benefit from the instrument have been satisfied, and the nonemployee is no longer providing goods or services. The Company had 216,960 stock-based awards to non-employees as of the implementation date, including 116,960 performance-based restricted stock units. The adoption of the ASU allowed the Company to (i) set the fair market value of the non-employee awards as of the adoption date and (ii) start to expense the performance-based restricted stock units based on the probability of satisfying the performance conditions. Standard Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-01 - Financial Instruments-Overall (Subtopic 825-10) January 2019 Required equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. Emphasized the existing requirement to use exit prices to measure fair value for disclosure purposes and clarifies that entities should not make use of practicability exceptions in determining the fair value of loans. The Company transferred $68.7 thousand from accumulated other comprehensive loss to retained earnings in January 2019. There was no impact to the income statement on the adoption date. ASU 2014-09 - Revenue from Contracts with Customers January 2019 Amended guidance related to revenue from contracts with customers. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Replaced nearly all existing revenue recognition guidance, including industry-specific guidance, established a new control-based revenue recognition model, changed the basis for deciding when revenue is recognized over time or at a point in time, provided new and more detailed guidance on specific topics and expands and improves disclosures about revenue. The accounting update did not materially impact the financial statements or recognition of revenues. The Company has updates to the following ASUs that have not yet been adopted. A complete list of recent, applicable accounting pronouncements was provided in the IPO Prospectus: Standard Anticipated Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-13 Financial Instruments-Credit Losses The Company expects to implement this standard in 2020; however, the Company is not required to implement this standard until January 2023 if it maintains its EGC status. Requires an entity to utilize a new impairment model known as the current expected credit loss (’’CECL’’) model to estimate its lifetime expected credit loss and record an allowance that, when deducted from amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The Company has established a committee of individuals from applicable departments to oversee the implementation process. The Company implemented a third-party software solution and completed the software implementation phase of the transition. The software implementation phase included data capture and portfolio segmentation amongst other items. The Company has completed an initial parallel run using 2019 data and expects to complete a second parallel run using third quarter data during the fourth quarter. At this time, an estimate of the impact cannot be established as the Company continues to evaluate the inputs into the model. The fourth quarter parallel run may provide a better estimate of the impact to the Company’s financial statements, but the actual impact could be significantly affected by the composition, characteristics and quality of the underlying loan portfolio at the time of adoption. Standard Anticipated Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-02 Leases (Topic 842) The Company expects to implement this standard in 2020; however, the Company is not required to implement this standard until January 2021 if it maintains its EGC status. Requires lessees and lessors to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. The update requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach with the option to elect certain practical expedients. The update will also increase disclosures around leases, including qualitative and specific quantitative measures. The Company is electing to apply the update as of the beginning of the period of adoption and the Company will not restate comparative periods. The Company also expects to elect certain optional practical expedients.
Allowance for Loan Losses	The allowance for loan losses is established as losses are estimated to have occurred through a provision for loan losses charged to income. Loan losses are charged against the allowance when management believes the loan balance is not collectible. Subsequent recoveries, if any, are credited to the allowance. The allowance for loan losses is evaluated on a regular basis by management and is based upon management’s periodic review of its ability to collect the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral and prevailing economic conditions. This evaluation is inherently subjective as it requires estimates that are susceptible to significant revision as more information becomes available. The allowance consists of allocated and general components. The allocated component relates to loans that are classified as impaired. For those loans that are classified as impaired, an allowance is established when the discounted cash flows (or collateral value or observable market price) of the impaired loan is lower than the carrying value of that loan. The general component covers unclassified loans and is based on historical charge-off experience and expected loss given default derived from the Company’s internal risk rating process and loan categories. Other adjustments may be made to the allowance for pools of loans after an assessment of internal or external influences on credit quality that are not fully reflected in the historical loss or risk rating data.
Impaired Loans	A loan is considered impaired, in accordance with the impairment accounting guidance (ASC 310-10-35-16), when based on current information and events, it is probable the Company will be unable to collect all amounts due from the borrower in accordance with the contractual terms of the loan. Impaired loans include nonperforming loans but also include loans modified in troubled debt restructurings where concessions have been granted to borrowers experiencing financial difficulties. The intent of concessions is to maximize collection.
Non-accrual Loans	Non-accrual Loans Nonperforming loans are loans for which the Company does not record interest income. The accrual of interest on mortgage and commercial loans is discontinued at the time the loan is 90 days past due unless the credit is well secured and in process of collection. Past due status is based on contractual terms of the loan. In all cases, loans are placed on non-accrual or charged off at an earlier date, if collection of principal or interest is considered doubtful.
Troubled Debt Restructurings	Restructured loans are those extended to borrowers who are experiencing financial difficulty and who have been granted a concession. The modification of terms typically includes the extension of maturity, reduction or deferment of monthly payment, or reduction of the stated interest rate.
Fair Value Measurement	Appraisals of the collateral underlying collateral-dependent loans are obtained when the loan is determined to be collateral-dependent and subsequently as deemed necessary by the Office of the Chief Credit Officer. Appraisals are reviewed for accuracy and consistency by the Office of the Chief Credit Officer. The appraised values are reduced by discounts to consider lack of marketability and estimated cost to sell if repayment or satisfaction of the loan is dependent on the sale of the collateral. These discounts and estimates are developed by the Office of the Chief Credit Officer by comparison to historical results. Available-for-Sale Securities Where quoted market prices are available in an active market, securities are classified within Level 1 of the valuation hierarchy. If quoted market prices are not available, then fair values are estimated by using quoted prices of securities with similar characteristics or independent asset pricing services and pricing models, the inputs of which are market-based or independently sourced market parameters, including, but not limited to, yield curves, interest rates, volatilities, prepayments, defaults, cumulative loss projections and cash flows. Such securities are classified in Level 2 of the valuation hierarchy. Derivatives Fair value of the interest rate swaps is obtained from independent pricing services based on quoted market prices for similar derivative contracts. Collateral-dependent Impaired Loans, Net of ALLL Premises and Equipment Held-for-Sale The estimated fair value of premises and equipment held-for-sale is based on the appraised fair value of the collateral, less estimated cost to sell. Foreclosed Assets Held-for-Sale The estimated fair value of foreclosed assets held-for-sale is based on the appraised fair value of the collateral, less estimated cost to sell. The Company adopted ASU 2016-01 on January 1, 2019. In accordance with its requirements, the fair value of loans as of September 30, 2019 was measured using an exit price notion. Methodologies utilized for this financial statement period are as follows: (i) Income Approach: Fair value is determined based on a discounted cash flow analysis. The discounted cash flow analysis was based on the contractual maturity of the loan and market indications of rates, prepayment speeds, defaults and credit risk; and (ii) Asset Approach: Fair value is determined based on the estimated values of the underlying collateral or individual analysis of receipts. This provides a better indication of value than the contractual income streams as these loans are not performing or exhibit strong signs indicative of non-performance. Fair value has been established in accordance with ASC 820, Fair Value Measurements and Disclosures, and is intended to represent the price that would be received in an orderly transaction between market participants as of the measurement date. In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, at least one significant assumption not observable in the market was utilized. These unobservable assumptions reflect estimates that market participants would use in pricing the asset or liability. Inputs to these valuation techniques are subjective in nature, involve uncertainties and require significant judgment and therefore cannot be determined with precision. Accordingly, the fair value estimates presented are not necessarily indicative of the amounts to be realized in a current market exchange. For December 31, 2018, fair value was estimated by discounting the future cash flows using the market rates at which similar notes would be made to borrowers with similar credit ratings and for the same remaining maturities. The market rates used were based on current rates the Company would impose for similar loans and reflect a market participant assumption about risks associated with nonperformance, illiquidity, and the structure and term of the loans along with local economic and market conditions. Restricted Equity Securities Fair value is estimated at book value due to restrictions that limit the sale or transfer of such securities. Interest Receivable and Payable The carrying amount approximates fair value. The carrying amount is determined using the interest rate, balance and last payment date. Deposits Fair value of term deposits is estimated by discounting the future cash flows using rates of similar deposits with similar maturities. The estimated fair value of demand, transaction, savings and money market deposits is the book value since rates are regularly adjusted to market rates and amounts are payable on demand at the reporting date. Federal Home Loan Bank Advances Fair value is estimated by discounting the future cash flows using rates of similar advances with similar maturities. These rates were obtained from current rates offered by FHLB. Fed Funds Purchased and Repurchase Agreements Fair value for fed funds purchased is book value. Fair value of repurchase agreements estimated by discounting the future cash flows using rates of similar maturities. Other Borrowings Fair value of the Company’s line of credit with another financial institution is estimated at book value due to its short-term nature. The estimated fair value for the Trust Preferred Securities is based on current borrowing rates currently available to the Company, considering the size and quality of the credit and liquidity of the debt as a security.

Nature of Operations and Summ_3

Nature of Operations and Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2019
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The Company has implemented the following Accounting Standards Updates (‘‘ASU’’) during 2019 : Standard Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2018-07 - Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting January 2019 Early adoption Expanded the scope of Topic 718 to include share-based payment transactions for acquiring goods and services from nonemployees, excluding share-based payments used to effectively provide (1) financing to the issuer or (2) awards granted in conjunction with selling goods or services to customers as part of a contract accounted for under Topic 606, Revenue from Contracts with Customers . The amendments include (1) grants are measured at grant-date fair value of the equity instruments, (2) equity-classified nonemployee share-based payment awards are measured at the grant date, (3) performance based awards are measured based on the probability of satisfying the performance conditions, and (4) in general, non-employee share-based payment awards will continue to be subject to the requirements of ASC 718 unless modified after the good has been delivered, the service has been rendered, any other conditions necessary to earn the right to benefit from the instrument have been satisfied, and the nonemployee is no longer providing goods or services. The Company had 216,960 stock-based awards to non-employees as of the implementation date, including 116,960 performance-based restricted stock units. The adoption of the ASU allowed the Company to (i) set the fair market value of the non-employee awards as of the adoption date and (ii) start to expense the performance-based restricted stock units based on the probability of satisfying the performance conditions. Standard Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-01 - Financial Instruments-Overall (Subtopic 825-10) January 2019 Required equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) to be measured at fair value with changes in fair value recognized in net income. Emphasized the existing requirement to use exit prices to measure fair value for disclosure purposes and clarifies that entities should not make use of practicability exceptions in determining the fair value of loans. The Company transferred $68.7 thousand from accumulated other comprehensive loss to retained earnings in January 2019. There was no impact to the income statement on the adoption date. ASU 2014-09 - Revenue from Contracts with Customers January 2019 Amended guidance related to revenue from contracts with customers. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Replaced nearly all existing revenue recognition guidance, including industry-specific guidance, established a new control-based revenue recognition model, changed the basis for deciding when revenue is recognized over time or at a point in time, provided new and more detailed guidance on specific topics and expands and improves disclosures about revenue. The accounting update did not materially impact the financial statements or recognition of revenues. The Company has updates to the following ASUs that have not yet been adopted. A complete list of recent, applicable accounting pronouncements was provided in the IPO Prospectus: Standard Anticipated Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-13 Financial Instruments-Credit Losses The Company expects to implement this standard in 2020; however, the Company is not required to implement this standard until January 2023 if it maintains its EGC status. Requires an entity to utilize a new impairment model known as the current expected credit loss (’’CECL’’) model to estimate its lifetime expected credit loss and record an allowance that, when deducted from amortized cost basis of the financial asset, presents the net amount expected to be collected on the financial asset. The Company has established a committee of individuals from applicable departments to oversee the implementation process. The Company implemented a third-party software solution and completed the software implementation phase of the transition. The software implementation phase included data capture and portfolio segmentation amongst other items. The Company has completed an initial parallel run using 2019 data and expects to complete a second parallel run using third quarter data during the fourth quarter. At this time, an estimate of the impact cannot be established as the Company continues to evaluate the inputs into the model. The fourth quarter parallel run may provide a better estimate of the impact to the Company’s financial statements, but the actual impact could be significantly affected by the composition, characteristics and quality of the underlying loan portfolio at the time of adoption. Standard Anticipated Date of Adoption Description Effect on Financial Statements or Other Significant Matters ASU 2016-02 Leases (Topic 842) The Company expects to implement this standard in 2020; however, the Company is not required to implement this standard until January 2021 if it maintains its EGC status. Requires lessees and lessors to recognize lease assets and lease liabilities on the balance sheet and disclose key information about leasing arrangements. The update requires lessees and lessors to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach with the option to elect certain practical expedients. The update will also increase disclosures around leases, including qualitative and specific quantitative measures. The Company is electing to apply the update as of the beginning of the period of adoption and the Company will not restate comparative periods. The Company also expects to elect certain optional practical expedients.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2019
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	The following table presents the computation of basic and diluted earnings per share: Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Earnings per Share Net income $ 10,384 $ 6,354 $ 29,173 $ 9,256 Less: preferred stock dividends — 525 175 1,575 Net income available to common stockholders $ 10,384 $ 5,829 $ 28,998 $ 7,681 Weighted average common shares (1) 48,351,553 37,790,614 46,239,021 33,918,540 Earnings per share $ 0.22 $ 0.15 $ 0.63 $ 0.23 Dilutive Earnings Per Share Net income available to common stockholders $ 10,384 $ 5,829 $ 28,998 $ 7,681 Weighted average common shares (1) 48,351,553 37,790,614 46,239,021 33,918,540 Effect of dilutive shares (1) 812,996 988,010 842,706 1,133,888 Weighted average dilutive common shares (1) 49,164,549 38,778,624 47,081,727 35,052,428 Diluted earnings per share $ 0.21 $ 0.15 $ 0.61 $ 0.22 SARs, RSUs, RSAs, PRSUs, PSSs not included because to do so would be antidilutive (1) 541,556 442,452 507,167 273,180 1 Share data has been adjusted to reflect a 2-for-1 stock split effected in the form of a dividend on December 21, 2018.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2019
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale Securities Reconciliation	The amortized cost and approximate fair values, together with gross unrealized gains and losses, of period end available-for-sale debt and equity securities consisted of the following: September 30, 2019 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Approximate Fair Value (Dollars in thousands) Available-for-sale debt securities Mortgage-backed - GSE residential $ 158,897 $ 2,009 $ 192 $ 160,714 Collateralized mortgage obligations - GSE residential 147,917 1,002 244 148,675 State and political subdivisions 398,963 21,051 5 420,009 Corporate bonds 1,444 92 — 1,536 Total available-for-sale debt securities 707,221 24,154 441 730,934 Equity securities Mutual funds 2,179 — 20 2,159 Total equity securities 2,179 — 20 2,159 Total available-for-sale securities $ 709,400 $ 24,154 $ 461 $ 733,093 December 31, 2018 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Approximate Fair Value (Dollars in thousands) Available-for-sale debt securities Mortgage-backed - GSE residential $ 131,215 $ 162 $ 2,090 $ 129,287 Collateralized mortgage obligations - GSE residential 154,110 287 1,771 152,626 State and political subdivisions 378,595 3,908 4,445 378,058 Corporate bonds 1,613 70 26 1,657 Total available-for-sale debt securities 665,533 4,427 8,332 661,628 Equity securities Mutual funds 2,141 — 91 2,050 Total equity securities 2,141 — 91 2,050 Total available-for-sale securities $ 667,674 $ 4,427 $ 8,423 $ 663,678
Investments Classified by Contractual Maturity Date	The amortized cost and fair value of available-for-sale debt securities at September 30, 2019 , by contractual maturity, are shown below: September 30, 2019 Within After One to After Five to After One Year Five Years Ten Years Ten Years Total (Dollars in thousands) Available-for-sale debt securities Mortgage-backed - GSE residential (1) Amortized cost $ — $ — $ 1,411 $ 157,486 $ 158,897 Estimated fair value — — 1,471 159,243 160,714 Collateralized mortgage obligations - GSE residential (1) Amortized cost — — 2,876 145,041 147,917 Estimated fair value — — 3,011 145,664 148,675 State and political subdivisions Amortized cost — 3,580 40,410 354,973 398,963 Estimated fair value — 3,674 43,071 373,264 420,009 Corporate bonds Amortized cost — — 1,444 — 1,444 Estimated fair value — — 1,536 — 1,536 Total available-for-sale debt securities Amortized cost — 3,580 46,141 657,500 707,221 Estimated fair value $ — $ 3,674 $ 49,089 $ 678,171 $ 730,934 (1) Actual maturities may differ from contractual maturities because issuers may have the rights to call or prepay obligations with or without prepayment penalties.
Schedule of Unrealized Loss on Investments	The following tables show gross unrealized losses, the number of securities that are in an unrealized loss position, and fair value of the Company’s investments with unrealized losses that are not deemed to be other-than-temporarily impaired, aggregated by investment class and length of time that individual securities have been in a continuous unrealized loss position at September 30, 2019 and December 31, 2018 : September 30, 2019 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities (Dollars in thousands) Available-for-Sale Debt Securities Mortgage-backed - GSE residential $ 3,988 $ 4 1 $ 27,889 $ 188 5 $ 31,877 $ 192 6 Collateralized mortgage obligations - GSE residential 48,851 149 6 9,792 95 10 58,643 244 16 State and political subdivisions 2,952 4 3 146 1 1 3,098 5 4 Corporate bonds — — 0 — — 0 — — 0 Total temporarily impaired debt securities $ 55,791 $ 157 10 $ 37,827 $ 284 16 $ 93,618 $ 441 26 December 31, 2018 Less than 12 Months 12 Months or More Total Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities Fair Value Unrealized Losses Number of Securities (Dollars in thousands) Available-for-Sale Debt Securities Mortgage-backed - GSE residential $ 66,232 $ 369 10 $ 44,280 $ 1,721 11 $ 110,512 $ 2,090 21 Collateralized mortgage obligations - GSE residential 4,639 42 1 68,362 1,729 20 73,001 1,771 21 State and political subdivisions 85,181 1,210 68 97,721 3,235 74 182,902 4,445 142 Corporate bonds 723 26 1 — — 0 723 26 1 Total temporarily impaired debt securities $ 156,775 $ 1,647 80 $ 210,363 $ 6,685 105 $ 367,138 $ 8,332 185
Gain (Loss) on Securities	The following is a summary of the recorded fair value and the unrealized and realized gains and losses recognized in net income on available-for-sale equity securities: September 30, 2019 Three months ended Nine months ended (Dollars in thousands) Net gains recognized during the period on equity securities $ 16 $ 72 Less: net gains recognized during the period on equity securities sold during the period — — Unrealized gain recognized during the reporting period on equity securities still held at the reporting date $ 16 $ 72

Loans and Allowance for Loan _2

Loans and Allowance for Loan Leases (Tables)	9 Months Ended
	Sep. 30, 2019
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	Categories of loans at September 30, 2019 and December 31, 2018 include: September 30, 2019 December 31, 2018 (Dollars in thousands) Commercial $ 1,312,647 $ 1,134,414 Energy 396,132 358,283 Commercial real estate 993,153 846,561 Construction and land development 527,582 440,032 Residential real estate 365,435 246,275 Equity lines of credit 22,192 20,286 Consumer installment 21,552 23,528 Gross loans 3,638,693 3,069,379 Less: Allowance for loan losses 42,995 37,826 Less: Net deferred loan fees and costs 8,901 8,632 Net loans $ 3,586,797 $ 3,022,921
Financing Receivable, Allowance for Credit Loss	The following tables summarize the activity in the allowance for loan losses by portfolio segment and disaggregated based on the Company’s impairment methodology. The allocation in one portfolio segment does not preclude its availability to absorb losses in other segments: Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Three months ended September 30, 2019 Allowance for loan losses Beginning balance $ 22,975 $ 7,300 $ 7,533 $ 2,602 $ 2,138 $ 155 $ 149 $ 42,852 Provision charged to expense 3,535 1,077 (249 ) 414 82 5 (14 ) 4,850 Charge-offs (1,700 ) (3,000 ) — — — — (8 ) (4,708 ) Recoveries 1 — — — — — — 1 Ending balance $ 24,811 $ 5,377 $ 7,284 $ 3,016 $ 2,220 $ 160 $ 127 $ 42,995 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Three months ended September 30, 2018 Allowance for loan losses Beginning balance $ 11,739 $ 7,957 $ 6,584 $ 2,530 $ 1,103 $ 170 $ 114 $ 30,197 Provision charged to expense 1,102 1,184 315 137 261 4 (3 ) 3,000 Charge-offs (97 ) — — — — — — (97 ) Recoveries 439 — — — — — 1 440 Ending balance $ 13,183 $ 9,141 $ 6,899 $ 2,667 $ 1,364 $ 174 $ 112 $ 33,540 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Nine months ended September 30, 2019 Allowance for loan losses Beginning balance $ 16,584 $ 10,262 $ 6,755 $ 2,475 $ 1,464 $ 159 $ 127 $ 37,826 Provision charged to expense 11,166 (2,461 ) 529 541 756 1 18 10,550 Charge-offs (2,954 ) (3,000 ) — — — — (19 ) (5,973 ) Recoveries 15 576 — — — — 1 592 Ending balance $ 24,811 $ 5,377 $ 7,284 $ 3,016 $ 2,220 $ 160 $ 127 $ 42,995 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) Nine months ended September 30, 2018 Allowance for loan losses Beginning balance $ 11,378 $ 7,726 $ 4,668 $ 1,200 $ 905 $ 122 $ 92 $ 26,091 Provision charged to expense 2,031 2,671 2,231 1,467 459 77 64 9,000 Charge-offs (681 ) (1,256 ) — — — (25 ) (45 ) (2,007 ) Recoveries 455 — — — — — 1 456 Ending balance $ 13,183 $ 9,141 $ 6,899 $ 2,667 $ 1,364 $ 174 $ 112 $ 33,540 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) September 30, 2019 Ending balance Individually evaluated for impairment $ 10,398 $ 854 $ 343 $ — $ 219 $ — $ — $ 11,814 Collectively evaluated for impairment $ 14,413 $ 4,523 $ 6,941 $ 3,016 $ 2,001 $ 160 $ 127 $ 31,181 Allocated to loans: Individually evaluated for impairment $ 66,162 $ 10,226 $ 16,544 $ — $ 2,537 $ — $ — $ 95,469 Collectively evaluated for impairment $ 1,246,485 $ 385,906 $ 976,609 $ 527,582 $ 362,898 $ 22,192 $ 21,552 $ 3,543,224 Ending balance $ 1,312,647 $ 396,132 $ 993,153 $ 527,582 $ 365,435 $ 22,192 $ 21,552 $ 3,638,693 Commercial Energy Commercial Real Estate Construction and Land Development Residential Real Estate Equity Lines of Credit Consumer Installment Total (Dollars in thousands) December 31, 2018 Ending balance Individually evaluated for impairment $ 5,814 $ 3,108 $ 473 $ — $ 5 $ — $ — $ 9,400 Collectively evaluated for impairment $ 10,770 $ 7,154 $ 6,282 $ 2,475 $ 1,459 $ 159 $ 127 $ 28,426 Allocated to loans: Individually evaluated for impairment $ 78,147 16,250 $ 15,227 $ — $ 2,027 $ — $ — $ 111,651 Collectively evaluated for impairment $ 1,056,267 $ 342,033 $ 831,334 $ 440,032 $ 244,248 $ 20,286 $ 23,528 $ 2,957,728 Ending balance $ 1,134,414 $ 358,283 $ 846,561 $ 440,032 $ 246,275 $ 20,286 $ 23,528 $ 3,069,379
Financing Receivable Credit Quality Indicators	The following tables present the credit risk profile of the Company’s loan portfolio based on an internal rating category (grades 1 - 8), portfolio segment and payment activity: Pass & Watch Special Mention Substandard Doubtful Loss Total (Dollars in thousands) September 30, 2019 Commercial $ 1,217,280 $ 29,350 $ 66,017 $ — $ — $ 1,312,647 Energy 378,533 10,342 2,580 4,677 — 396,132 Commercial real estate 976,262 7,529 8,402 960 — 993,153 Construction and land development 527,582 — — — — 527,582 Residential real estate 362,625 273 2,537 — — 365,435 Equity lines of credit 22,192 — — — — 22,192 Consumer installment 21,552 — — — — 21,552 $ 3,506,026 $ 47,494 $ 79,536 $ 5,637 $ — $ 3,638,693 Pass & Watch Special Mention Substandard Doubtful Loss Total (Dollars in thousands) December 31, 2018 Commercial $ 1,056,505 $ — $ 73,824 $ 4,085 $ — $ 1,134,414 Energy 339,720 5,376 13,187 — — 358,283 Commercial real estate 831,290 6,950 7,209 1,112 — 846,561 Construction and land development 440,032 — — — — 440,032 Residential real estate 244,178 70 2,027 — — 246,275 Equity lines of credit 20,286 — — — — 20,286 Consumer installment 23,528 — — — — 23,528 $ 2,955,539 $ 12,396 $ 96,247 $ 5,197 $ — $ 3,069,379
Financing Receivable, Past Due	The following tables present the Company’s loan portfolio aging analysis of the recorded investment in loans as of September 30, 2019 and December 31, 2018 : 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Total Past Due Current Total Loans Receivable Loans >= 90 Days and Accruing (Dollars in thousands) September 30, 2019 Commercial $ 42,039 $ 2,785 $ 1,101 $ 45,925 $ 1,266,722 $ 1,312,647 $ — Energy 7,122 — 5,319 12,441 383,691 396,132 642 Commercial real estate 317 — 93 410 992,743 993,153 — Construction and land development 12,345 — — 12,345 515,237 527,582 — Residential real estate 68 — 2,012 2,080 363,355 365,435 — Equity lines of credit — — — — 22,192 22,192 — Consumer installment 50 — — 50 21,502 21,552 — $ 61,941 $ 2,785 $ 8,525 $ 73,251 $ 3,565,442 $ 3,638,693 $ 642 30-59 Days Past Due 60-89 Days Past Due 90 Days or More Total Past Due Current Total Loans Receivable Loans >= 90 Days and Accruing (Dollars in thousands) December 31, 2018 Commercial $ 1,040 $ — $ 4,137 $ 5,177 $ 1,129,237 $ 1,134,414 $ — Energy 1,994 — 9,218 11,212 347,071 358,283 — Commercial real estate — 425 2,253 2,678 843,883 846,561 — Construction and land development — — — — 440,032 440,032 — Residential real estate 28 194 — 222 246,053 246,275 — Equity lines of credit — — — — 20,286 20,286 — Consumer installment — — — — 23,528 23,528 — $ 3,062 $ 619 $ 15,608 $ 19,289 $ 3,050,090 $ 3,069,379 $ —
Impaired Financing Receivables	The following tables present impaired loans for the periods ended September 30, 2019 and December 31, 2018 : Unpaid Recorded Balance Principal Balance Specific Allowance (Dollars in thousands) September 30, 2019 Loans without a specific valuation Commercial $ 25,770 $ 25,770 $ — Energy 2,969 2,969 — Commercial real estate 12,501 12,501 — Construction and land development — — — Residential real estate 2,195 2,195 — Equity lines of credit — — — Consumer installment — — — Loans with a specific valuation Commercial 40,392 40,392 10,398 Energy 7,257 7,257 854 Commercial real estate 4,043 4,043 343 Construction and land development — — — Residential real estate 342 342 219 Equity lines of credit — — — Consumer installment — — — Total Commercial 66,162 66,162 10,398 Energy 10,226 10,226 854 Commercial real estate 16,544 16,544 343 Construction and land development — — — Residential real estate 2,537 2,537 219 Equity lines of credit — — — Consumer installment — — — $ 95,469 $ 95,469 $ 11,814 Unpaid Recorded Balance Principal Balance Specific Allowance (Dollars in thousands) December 31, 2018 Loans without a specific valuation Commercial $ 40,151 $ 40,151 $ — Energy 2,789 2,789 — Commercial real estate 7,059 7,059 — Construction and land development — — — Residential real estate 1,964 1,964 — Equity lines of credit — — — Consumer installment — — — Loans with a specific valuation Commercial 37,996 37,996 5,814 Energy 13,461 13,461 3,108 Commercial real estate 8,168 8,168 473 Construction and land development — — — Residential real estate 63 63 5 Equity lines of credit — — — Consumer installment — — — Total Commercial 78,147 78,147 5,814 Energy 16,250 16,250 3,108 Commercial real estate 15,227 15,227 473 Construction and land development — — — Residential real estate 2,027 2,027 5 Equity lines of credit — — — Consumer installment — — — $ 111,651 $ 111,651 $ 9,400 The table below shows interest income recognized during the three- and nine- month periods ended September 30, 2019 and September 30, 2018 for impaired loans held at the end of each period: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Commercial $ 386 $ 402 $ 862 $ 1,110 Energy 98 93 324 369 Commercial real estate 200 88 613 291 Construction and land development — — — — Residential real estate 8 17 17 52 Equity lines of credit — — — — Consumer installment — — — — Total interest income recognized $ 692 $ 600 $ 1,816 $ 1,822 The table below shows the average balance of impaired loans during the three- and nine- month periods ended September 30, 2019 and September 30, 2018 by loan category for impaired loans held at the end of each period: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 (Dollars in thousands) Commercial $ 54,410 $ 27,671 $ 49,265 $ 26,849 Energy 13,623 17,683 15,091 18,992 Commercial real estate 16,690 8,055 16,528 8,101 Construction and land development — — — — Residential real estate 2,538 2,046 2,354 2,059 Equity lines of credit — — — — Consumer installment — — — — Total average impaired loans $ 87,261 $ 55,455 $ 83,238 $ 56,001
Financing Receivable, Nonaccrual	The following table presents the Company’s non-accrual loans at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 (Dollars in thousands) Commercial $ 34,201 $ 4,781 Energy 4,677 9,219 Commercial real estate 2,680 3,517 Construction and land development — — Residential real estate 2,068 301 Equity lines of credit — — Consumer installment — — Total non-accrual loans $ 43,626 $ 17,818
Financing Receivable, Troubled Debt Restructuring	In addition, the balance of those loans that are in default at any time during the past twelve months at September 30, 2019 and December 31, 2018 is provided below: September 30, 2019 December 31, 2018 Number of Loans Outstanding Balance Balance 90 days past due at any time during previous 12 months (1) Number of Loans Outstanding Balance Balance 90 days past due at any time during previous 12 months (1) (Dollars in thousands) Commercial 7 $ 36,865 $ — 6 $ 5,022 $ 55 Energy 2 2,969 — 2 3,631 — Commercial real estate 3 4,947 — 2 1,382 — Construction and land development — — — — — — Residential real estate — — — 1 237 — Equity lines of credit — — — — — — Consumer installment — — — — — — Total restructured loans 12 $ 44,781 $ — 11 $ 10,272 $ 55 (1) Default is considered to mean 90 days or more past due as to interest or principal. The table below presents loans restructured during the three- and nine- months ended September 30, 2019 and 2018 , including the post-modification outstanding balance and the type of concession made: Three Months Ended Nine Months Ended September 30, 2019 September 30, 2018 September 30, 2019 September 30, 2018 (Dollars in thousands) Commercial - Deferred payment $ — $ — $ — $ 61 - Reduction of monthly payment — — 994 — - Extension of maturity date — — 30,005 300 Energy - Reduction of monthly payment — — — 2,972 Commercial real estate - Reduction of monthly payment — — 3,767 — - Interest rate reduction — 1,153 — 2,256 Total troubled debt restructurings $ — $ 1,153 $ 34,766 $ 5,589

Derivatives and Hedging (Tables

Derivatives and Hedging (Tables)	9 Months Ended
	Sep. 30, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	As of September 30, 2019 and December 31, 2018 , the Company had the following outstanding derivatives that were not designated as hedges in qualifying hedging relationships: September 30, 2019 December 31, 2018 Product Number of Instruments Notional Amount Number of Instruments Notional Amount (Dollars in thousands) Back-to-back swaps 46 $ 308,960 20 $ 77,709 The table below presents the fair value of the Company’s derivative financial instruments and their classification on the Balance Sheet as of September 30, 2019 and December 31, 2018 : Asset Derivatives Liability Derivatives Balance Sheet September 30, December 31, Balance Sheet September 30, December 31, Location 2019 2018 Location 2019 2018 (Dollars in thousands) Derivatives not designated as hedging instruments Interest rate products Other assets $ 13,735 $ 1,051 Other liabilities $ 13,782 $ 1,136
Offsetting Assets	The tables below show a gross presentation, the effects of offsetting, and a net presentation of the Company’s derivatives as of September 30, 2019 and December 31, 2018 : September 30, 2019 (Dollars in thousands) Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts of Recognized Assets and Liabilities Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Cash Collateral Received Net Amount Offsetting of derivative assets Derivatives $ 13,735 $ — $ 13,735 $ — $ — $ 13,735 Offsetting of derivative liabilities Derivatives $ 13,782 $ — $ 13,782 $ — $ — $ 13,782 December 31, 2018 (Dollars in thousands) Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts of Recognized Assets and Liabilities Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Cash Collateral Received Net Amount Offsetting of derivative assets Derivatives $ 1,051 $ — $ 1,051 $ 72 $ — $ 979 Offsetting of derivative liabilities Derivatives $ 1,136 $ — $ 1,136 $ 72 $ — $ 1,064
Offsetting Liabilities	The tables below show a gross presentation, the effects of offsetting, and a net presentation of the Company’s derivatives as of September 30, 2019 and December 31, 2018 : September 30, 2019 (Dollars in thousands) Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts of Recognized Assets and Liabilities Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Cash Collateral Received Net Amount Offsetting of derivative assets Derivatives $ 13,735 $ — $ 13,735 $ — $ — $ 13,735 Offsetting of derivative liabilities Derivatives $ 13,782 $ — $ 13,782 $ — $ — $ 13,782 December 31, 2018 (Dollars in thousands) Gross Amounts Not Offset in the Statement of Financial Position Gross Amounts of Recognized Assets and Liabilities Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Cash Collateral Received Net Amount Offsetting of derivative assets Derivatives $ 1,051 $ — $ 1,051 $ 72 $ — $ 979 Offsetting of derivative liabilities Derivatives $ 1,136 $ — $ 1,136 $ 72 $ — $ 1,064

Interest-Bearing Deposits and_2

Interest-Bearing Deposits and Borrowings (Tables)	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Schedule of Time Deposit Maturities and Borrowings	The scheduled maturities, excluding interest, of the Company’s borrowings at September 30, 2019 were as follows: September 30, 2019 Within One Year One to Two Years Two to Three Years Three to Four Years Four to Five Years After Five Years Total (Dollars in thousands) Time deposits $ 822,439 $ 216,486 $ 105,559 $ 52,055 $ 25,215 $ — $ 1,221,754 Fed funds purchased & repurchase agreements 49,810 — — — — — 49,810 FHLB borrowings 24,000 76,500 16,500 39,704 — 151,100 307,804 Trust preferred securities (1) — — — — — 912 912 $ 896,249 $ 292,986 $ 122,059 $ 91,759 $ 25,215 $ 152,012 $ 1,580,280 (1) The contract value of the trust preferred securities is $2.5 million and is currently being accreted to the maturity date of 2035.

Change in Accumulated Other C_2

Change in Accumulated Other Comprehensive Income (AOCI) (Tables)	9 Months Ended
	Sep. 30, 2019
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	Amounts reclassified from AOCI and the affected line items in the consolidated Statements of Income during the three and nine months ended September 30, 2019 and 2018 , were as follows: Three Months Ended Nine Months Ended September 30, September 30, Affected Line Item in the 2019 2018 2019 2018 Statements of Income (Dollars in thousands) Unrealized gains on available-for-sale securities $ 34 $ 195 $ 467 $ 608 Gain on sale of available for sale securities Amount reclassified before tax 34 195 467 608 Less: tax effect 9 47 115 149 Income tax expense Net reclassified amount $ 25 $ 148 $ 352 $ 459

Regulatory Matters (Tables)

Regulatory Matters (Tables)	9 Months Ended
	Sep. 30, 2019
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The Company’s and the Bank’s actual capital amounts and ratios as of September 30, 2019 and December 31, 2018 Actual Minimum Capital Required - Basel III Phase-In Schedule Minimum Capital Required - Basel III Fully Phase-In Required to be Considered Well Capitalized Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) September 30, 2019 Total Capital to Risk-Weighted Assets Consolidated $ 618,407 13.9 % $ 467,160 10.5 % $ 467,160 10.5 % N/A N/A Bank 567,667 12.8 467,085 10.5 467,085 10.5 $ 444,843 10.0 % Tier I Capital to Risk-Weighted Assets Consolidated 575,412 12.9 378,177 8.5 378,177 8.5 N/A N/A Bank 524,672 11.8 378,117 8.5 378,117 8.5 355,875 8.0 Common Equity Tier 1 to Risk-Weighted Assets Consolidated 574,500 12.9 311,440 7.0 311,440 7.0 N/A N/A Bank 524,672 11.8 311,390 7.0 311,390 7.0 289,148 6.5 Tier I Capital to Average Assets Consolidated 575,412 12.6 183,152 4.0 183,152 4.0 N/A N/A Bank $ 524,672 11.5 % $ 183,109 4.0 % $ 183,109 4.0 % $ 228,886 5.0 % December 31, 2018 Total Capital to Risk-Weighted Assets Consolidated $ 521,111 13.5 % $ 380,873 9.9 % $ 404,979 10.5 % N/A N/A Bank 481,287 12.5 380,369 9.9 404,443 10.5 $ 385,184 10.0 % Tier I Capital to Risk-Weighted Assets Consolidated 483,285 12.5 303,734 7.9 327,840 8.5 N/A N/A Bank 443,461 11.5 303,332 7.9 327,406 8.5 308,147 8.0 Common Equity Tier 1 to Risk-Weighted Assets Consolidated 453,049 11.7 245,880 6.4 269,986 7.0 N/A N/A Bank 443,461 11.5 245,555 6.4 269,629 7.0 250,369 6.5 Tier I Capital to Average Assets Consolidated 483,285 12.4 155,538 4.0 155,538 4.0 N/A N/A Bank $ 443,461 11.4 % $ 155,420 4.0 % $ 155,420 4.0 % $ 194,275 5.0 %

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue	The following table disaggregates the non-interest income subject to ASU 2014-09 by category: Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Non-interest income subject to ASU 2014-09 Service charges and fees (rebates) on customer accounts $ 72 $ (100 ) $ 441 $ 506 ATM and credit card interchange income 476 301 1,312 827 International fees 199 160 506 579 Other fees 12 10 104 30 Total non-interest income from contracts with customers 759 371 2,363 1,942 Non-interest income not subject to ASU 2014-09 Other non-interest income 2,453 814 4,166 2,946 Total non-interest income $ 3,212 $ 1,185 $ 6,529 $ 4,888

Equity-Based Compensation (Tabl

Equity-Based Compensation (Tables)	9 Months Ended
	Sep. 30, 2019
Share-based Payment Arrangement [Abstract]
Share-based Payment Arrangement, Expensed and Capitalized, Amount	The table below summarizes the stock-based compensation for the three and nine-months ended September 30, 2019 and 2018 : Three Months Ended Nine Months Ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Stock appreciation rights $ 446 $ 220 $ 977 $ 1,905 Performance based restricted units and stock 159 28 409 524 Restricted stock units 510 280 1,528 1,957 Restricted stock awards 209 — 656 — Employee stock purchase plan — 38 36 127 Total stock-based compensation $ 1,324 $ 566 $ 3,606 $ 4,513

Income Tax (Tables)

Income Tax (Tables)	9 Months Ended
	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the income tax expense (benefit) at the statutory rate to the Company’s actual income tax expense (benefit) is shown below: Three months ended Nine months ended September 30, September 30, 2019 2018 2019 2018 (Dollars in thousands) Computed at the statutory rate (21%) $ 2,725 $ 1,529 $ 7,241 $ 1,754 Increase (decrease) resulting from Tax-exempt income (722 ) (860 ) (2,147 ) (2,754 ) Nondeductible expenses 71 87 208 261 State tax credit — — (1,361 ) — State income taxes 566 124 1,526 245 Equity based compensation (5 ) — (66 ) (400 ) Other adjustments (43 ) 44 (93 ) (10 ) Actual tax expense (benefit) $ 2,592 $ 924 $ 5,308 $ (904 )
Schedule of Deferred Tax Assets and Liabilities	The tax effects of temporary differences related to deferred taxes shown on the consolidated Balance Sheets are presented below: September 30, 2019 December 31, 2018 (Dollars in thousands) Deferred tax assets Net unrealized loss on securities available-for-sale $ — $ 986 Allowance for loan losses 10,637 9,358 Lease incentive 306 329 Impairment of available for sale securities 498 498 Valuation allowance on real estate — 396 Loan fees 2,202 2,135 Net operating loss carryover 370 398 Accrued expenses 105 1,927 Deferred compensation 2,317 1,838 Alternative minimum tax credits — 2,365 State tax credit 3,517 2,506 Other 63 79 20,015 22,815 Deferred tax liability Fair market value adjustments - trust preferred securities (350 ) (356 ) Net unrealized gain on securities available-for-sale (5,812 ) — FHLB stock basis (936 ) (739 ) Premises and equipment (4,301 ) (5,019 ) Other (1,187 ) (385 ) (12,586 ) (6,499 ) Net deferred tax asset $ 7,429 $ 16,316

Disclosures about Fair Value _2

Disclosures about Fair Value of Financial Instruments (Tables)	9 Months Ended
	Sep. 30, 2019
Fair Value Disclosures [Abstract]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present the fair value measurements of assets and liabilities recognized in the accompanying consolidated Balance Sheets measured at fair value on a recurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2019 and December 31, 2018 : September 30, 2019 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Available-for-sale securities Mortgage-backed - GSE residential $ 160,714 $ — $ 160,714 $ — Collateralized mortgage obligations - GSE residential 148,675 — 148,675 — State and political subdivisions 420,009 — 420,009 — Corporate bonds 1,536 — 1,536 — Mutual funds 2,159 — 2,159 — Derivative assets 13,735 — 13,735 — Derivative liabilities $ 13,782 $ — $ 13,782 $ — December 31, 2018 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Available-for-sale securities Mortgage-backed - GSE residential $ 129,287 $ — $ 129,287 $ — Collateralized mortgage obligations - GSE residential 152,626 — 152,626 — State and political subdivisions 378,058 — 378,058 — Corporate bonds 1,657 — 1,657 — Mutual funds 2,050 — 2,050 — Derivative assets 1,051 — 1,051 — Derivative liabilities $ 1,136 $ — $ 1,136 $ —
Fair Value Measurements, Nonrecurring	The following tables present assets measured at fair value on a nonrecurring basis and the level within the fair value hierarchy in which the fair value measurements fall at September 30, 2019 and December 31, 2018 : September 30, 2019 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Collateral-dependent impaired loans $ 40,220 $ — $ — $ 40,220 Premises and equipment held-for-sale — — — — Foreclosed assets held for sale $ 2,471 $ — $ — $ 2,471 December 31, 2018 Fair Value Measurements Using Fair Value Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Unobservable Inputs (Level 3) (Dollars in thousands) Collateral-dependent impaired loans $ 50,288 $ — $ — $ 50,288 Premises and equipment held-for-sale 3,444 — 3,444 — Foreclosed assets held for sale $ — $ — $ — $ —
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation	The following tables present quantitative information about unobservable inputs used in nonrecurring Level 3 fair value measurements at September 30, 2019 and December 31, 2018 : September 30, 2019 Fair Value Valuation Techniques Unobservable Inputs Range (Weighted Average) (Dollars in thousands) Collateral-dependent impaired loans $ 40,220 Market comparable properties Marketability discount 10% - 15% (12%) Foreclosed assets held for sale $ 2,471 Market comparable properties Marketability discount 25% December 31, 2018 Fair Value Valuation Techniques Unobservable Inputs Range (Weighted Average) (Dollars in thousands) Collateral-dependent impaired loans $ 50,288 Market comparable properties Marketability discount 10% - 15% Foreclosed assets held for sale $ —
Fair Value, by Balance Sheet Grouping	The following tables present the estimated fair values of the Company’s financial instruments at September 30, 2019 and December 31, 2018 : September 30, 2019 Carrying Fair Value Measurements Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial Assets Cash and cash equivalents $ 128,126 $ 128,126 $ — $ — $ 128,126 Available-for-sale securities 733,093 — 733,093 — 733,093 Loans, net of allowance for loan losses 3,586,797 — — 3,607,276 3,607,276 Restricted equity securities 16,053 — — 16,053 16,053 Interest receivable 15,909 — 15,909 — 15,909 Derivative assets 13,735 — 13,735 — 13,735 $ 4,493,713 $ 128,126 $ 762,737 $ 3,623,329 $ 4,514,192 Financial Liabilities Deposits $ 3,658,108 $ 513,832 $ — $ 3,162,740 $ 3,676,572 Federal funds purchased and repurchase agreements 49,810 — 49,809 — 49,809 Federal Home Loan Bank advances 307,804 — 311,583 — 311,583 Other borrowings 912 — 2,054 — 2,054 Interest payable 4,643 — 4,643 — 4,643 Derivative liabilities 13,782 — 13,782 — 13,782 $ 4,035,059 $ 513,832 $ 381,871 $ 3,162,740 $ 4,058,443 December 31, 2018 Carrying Fair Value Measurements Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial Assets Cash and cash equivalents $ 216,541 $ 216,541 $ — $ — $ 216,541 Available-for-sale securities 661,628 — 661,628 — 661,628 Loans, net of allowance for loan losses 3,022,921 — — 3,027,930 3,027,930 Restricted equity securities 14,525 — — 14,525 14,525 Interest receivable 14,092 — 14,092 — 14,092 Derivative assets 1,051 — 1,051 — 1,051 $ 3,930,758 $ 216,541 $ 676,771 $ 3,042,455 $ 3,935,767 Financial Liabilities Deposits $ 3,208,097 $ 484,284 $ — $ 2,696,212 $ 3,180,496 Federal funds purchased and repurchase agreements 75,406 — 75,404 — 75,404 Federal Home Loan Bank advances 312,985 — 298,017 — 298,017 Other borrowings 884 — 2,022 — 2,022 Interest payable 2,868 — 2,868 — 2,868 Derivative liabilities 1,136 — 1,136 — 1,136 $ 3,601,376 $ 484,284 $ 379,447 $ 2,696,212 $ 3,559,943

Commitments and Credit Risk (Ta

Commitments and Credit Risk (Tables)	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments	The Company had the following commitments at September 30, 2019 and December 31, 2018 : September 30, 2019 December 31, 2018 (Dollars in thousands) Commitments to originate loans $ 176,598 $ 190,997 Standby letters of credit 35,699 32,439 Lines of credit 1,255,764 1,174,166 Future lease commitment 19,054 19,054 Total $ 1,487,115 $ 1,416,656

Nature of Operations and Summ_4

Nature of Operations and Summary of Significant Accounting Policies (Details)		Sep. 17, 2019USD ($)$ / sharesshares	Aug. 19, 2019USD ($)$ / sharesshares	Dec. 21, 2018	Sep. 30, 2019USD ($)	Jan. 01, 2019USD ($)shares
Subsidiary, Sale of Stock [Line Items]
Cash and cash equivalents held at bank					$ 85,000,000
Required reserve					63,300,000
Cash collateral					$ 18,200,000
Stock split ratio				2
IPO
Subsidiary, Sale of Stock [Line Items]
Shares sold and issued (in shares) | shares			5,750,000
Price of stock per share (in dollars per share) | $ / shares			$ 14.50
Total proceeds on sale of stock			$ 75,600,000
Stockholders Public Offering
Subsidiary, Sale of Stock [Line Items]
Shares sold and issued (in shares) | shares			1,261,589
Price of stock per share (in dollars per share) | $ / shares			$ 14.50
Over-Allotment Option
Subsidiary, Sale of Stock [Line Items]
Shares sold and issued (in shares) | shares		844,362
Price of stock per share (in dollars per share) | $ / shares		$ 14.50
Total proceeds on sale of stock		$ 11,400,000
Accounting Standards Update 2018-07
Subsidiary, Sale of Stock [Line Items]
Cumulative effect adjustment						$ 0
Accounting Standards Update 2016-01
Subsidiary, Sale of Stock [Line Items]
Cumulative effect adjustment						$ 0
Share-based Payment Arrangement, Nonemployee
Subsidiary, Sale of Stock [Line Items]
Share-based awards (in shares) | shares						216,960
Share-based Payment Arrangement, Nonemployee | Performance Based Restricted Stock Units
Subsidiary, Sale of Stock [Line Items]
Share-based awards (in shares) | shares						116,960
Accumulated Other Comprehensive Income (Loss) | Accounting Standards Update 2016-01
Subsidiary, Sale of Stock [Line Items]
Cumulative effect adjustment						$ 68,700
Retained Earnings | Accounting Standards Update 2018-07
Subsidiary, Sale of Stock [Line Items]
Cumulative effect adjustment	[1]					(2,159,000)
Retained Earnings | Accounting Standards Update 2016-01
Subsidiary, Sale of Stock [Line Items]
Cumulative effect adjustment	[1]					(68,700)
Additional Paid-in Capital | Accounting Standards Update 2018-07
Subsidiary, Sale of Stock [Line Items]
Cumulative effect adjustment						$ 2,159,000
[1]	Share data has been adjusted to reflect a 2-for-1 stock split effected in the form of a dividend on December 21, 2018.

Earnings Per Share (Details)

Earnings Per Share (Details) $ / shares in Units, $ in Thousands		Dec. 21, 2018	Sep. 30, 2019USD ($)$ / sharesshares	Sep. 30, 2018USD ($)$ / sharesshares	Sep. 30, 2019USD ($)$ / sharesshares	Sep. 30, 2018USD ($)$ / sharesshares
Earnings per Share
Net income | $			$ 10,384	$ 6,354	$ 29,173	$ 9,256
Less: preferred stock dividends | $			0	525	175	1,575
Net income available to common stockholders | $			$ 10,384	$ 5,829	$ 28,998	$ 7,681
Weighted average common shares (in shares) | shares			48,351,553	37,790,614	46,239,021	33,918,540
Earnings per share (in dollars per share) | $ / shares	[1]		$ 0.22	$ 0.15	$ 0.63	$ 0.23
Dilutive Earnings Per Share
Net income available to common stockholders | $			$ 10,384	$ 5,829	$ 28,998	$ 7,681
Effect of dilutive shares (in shares) | shares			812,996	988,010	842,706	1,133,888
Weighted average dilutive common shares (in shares) | shares			49,164,549	38,778,624	47,081,727	35,052,428
Diluted earnings per share (in dollars per share) | $ / shares	[1]		$ 0.21	$ 0.15	$ 0.61	$ 0.22
SARs, RSUs, RSAs, PRSUs, PSSs not included because to do so would be antidilutive (in shares) | shares			541,556	442,452	507,167	273,180
Stock split ratio		2
[1]	Share data has been adjusted to reflect a 2-for-1 stock split effected in the form of a dividend on December 21, 2018.

Securities - Amortized Cost and

Securities - Amortized Cost and Fair Value of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt and Equity Securities, FV-NI [Line Items]
Available for sale securities - tax-exempt	$ 409,562	$ 367,545
Available-for-sale debt securities
Amortized Cost	707,221	665,533
Gross Unrealized Gains	24,154	4,427
Gross Unrealized Losses	441	8,332
Approximate Fair Value	730,934	661,628
Equity securities
Amortized Cost	2,179
Amortized Cost		2,141
Gross Unrealized Gains	0
Gross Unrealized Gains		0
Gross Unrealized Losses	20
Gross Unrealized Losses		91
Approximate Fair Value	2,159
Approximate Fair Value		2,050
Total available-for-sale securities
Amortized Cost	709,400
Amortized Cost		667,674
Gross Unrealized Gains	24,154
Gross Unrealized Gains		4,427
Gross Unrealized Losses	461
Gross Unrealized Losses		8,423
Approximate Fair Value	733,093
Approximate Fair Value		663,678
Mortgage-backed - GSE residential
Available-for-sale debt securities
Amortized Cost	158,897	131,215
Gross Unrealized Gains	2,009	162
Gross Unrealized Losses	192	2,090
Approximate Fair Value	160,714	129,287
Collateralized mortgage obligations - GSE residential
Available-for-sale debt securities
Amortized Cost	147,917	154,110
Gross Unrealized Gains	1,002	287
Gross Unrealized Losses	244	1,771
Approximate Fair Value	148,675	152,626
State and political subdivisions
Available-for-sale debt securities
Amortized Cost	398,963	378,595
Gross Unrealized Gains	21,051	3,908
Gross Unrealized Losses	5	4,445
Approximate Fair Value	420,009	378,058
Corporate bonds
Available-for-sale debt securities
Amortized Cost	1,444	1,613
Gross Unrealized Gains	92	70
Gross Unrealized Losses	0	26
Approximate Fair Value	1,536	1,657
Mutual funds
Equity securities
Amortized Cost	2,179
Amortized Cost		2,141
Gross Unrealized Gains	0
Gross Unrealized Gains		0
Gross Unrealized Losses	$ 20
Gross Unrealized Losses		91
Approximate Fair Value		$ 2,050

Securities - Other Narrative (D

Securities - Other Narrative (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Securities pledged as collateral	$ 36.6	$ 108.6

Securities - Amortized Cost a_2

Securities - Amortized Cost and Fair Value by Maturity Date (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Within one year	$ 0
One to five years	3,580
Five to ten years	46,141
After ten years	657,500
Amortized Cost	707,221	$ 665,533
Fair Value
Within one year	0
One to five years	3,674
Five to ten years	49,089
After ten years	678,171
Fair Value	730,934	661,628
Mortgage-backed - GSE residential
Amortized Cost
Within one year	0
One to five years	0
Five to ten years	1,411
After ten years	157,486
Amortized Cost	158,897	131,215
Fair Value
Within one year	0
One to five years	0
Five to ten years	1,471
After ten years	159,243
Fair Value	160,714	129,287
Collateralized mortgage obligations - GSE residential
Amortized Cost
Within one year	0
One to five years	0
Five to ten years	2,876
After ten years	145,041
Amortized Cost	147,917	154,110
Fair Value
Within one year	0
One to five years	0
Five to ten years	3,011
After ten years	145,664
Fair Value	148,675	152,626
State and political subdivisions
Amortized Cost
Within one year	0
One to five years	3,580
Five to ten years	40,410
After ten years	354,973
Amortized Cost	398,963	378,595
Fair Value
Within one year	0
One to five years	3,674
Five to ten years	43,071
After ten years	373,264
Fair Value	420,009	378,058
Corporate bonds
Amortized Cost
Within one year	0
One to five years	0
Five to ten years	1,444
After ten years	0
Amortized Cost	1,444	1,613
Fair Value
Within one year	0
One to five years	0
Five to ten years	1,536
After ten years	0
Fair Value	$ 1,536	$ 1,657

Securities - Unrealized Losses

Securities - Unrealized Losses (Details) $ in Thousands	Sep. 30, 2019USD ($)securities	Dec. 31, 2018USD ($)securities
Less than 12 Months
Fair Value	$ 55,791	$ 156,775
Unrealized Losses	$ 157	$ 1,647
Number of Securities | securities	10	80
12 Months or More
Fair Value	$ 37,827	$ 210,363
Unrealized Losses	$ 284	$ 6,685
Number of Securities | securities	16	105
Total
Fair Value	$ 93,618	$ 367,138
Unrealized Losses	$ 441	$ 8,332
Number of Securities | securities	26	185
Mortgage-backed - GSE residential
Less than 12 Months
Fair Value	$ 3,988	$ 66,232
Unrealized Losses	$ 4	$ 369
Number of Securities | securities	1	10
12 Months or More
Fair Value	$ 27,889	$ 44,280
Unrealized Losses	$ 188	$ 1,721
Number of Securities | securities	5	11
Total
Fair Value	$ 31,877	$ 110,512
Unrealized Losses	$ 192	$ 2,090
Number of Securities | securities	6	21
Collateralized mortgage obligations - GSE residential
Less than 12 Months
Fair Value	$ 48,851	$ 4,639
Unrealized Losses	$ 149	$ 42
Number of Securities | securities	6	1
12 Months or More
Fair Value	$ 9,792	$ 68,362
Unrealized Losses	$ 95	$ 1,729
Number of Securities | securities	10	20
Total
Fair Value	$ 58,643	$ 73,001
Unrealized Losses	$ 244	$ 1,771
Number of Securities | securities	16	21
State and political subdivisions
Less than 12 Months
Fair Value	$ 2,952	$ 85,181
Unrealized Losses	$ 4	$ 1,210
Number of Securities | securities	3	68
12 Months or More
Fair Value	$ 146	$ 97,721
Unrealized Losses	$ 1	$ 3,235
Number of Securities | securities	1	74
Total
Fair Value	$ 3,098	$ 182,902
Unrealized Losses	$ 5	$ 4,445
Number of Securities | securities	4	142
Corporate bonds
Less than 12 Months
Fair Value	$ 0	$ 723
Unrealized Losses	$ 0	$ 26
Number of Securities | securities	0	1
12 Months or More
Fair Value	$ 0	$ 0
Unrealized Losses	$ 0	$ 0
Number of Securities | securities	0	0
Total
Fair Value	$ 0	$ 723
Unrealized Losses	$ 0	$ 26
Number of Securities | securities	0	1

Securities - Other Than Tempora

Securities - Other Than Temporary Impairment Losses (Details) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Gross gains on available-for-sale securities	$ 506,200	$ 2,000,000
Gross losses on available-for-sale securities	$ 39,400	$ 1,400,000

Securities - Equity Securities

Securities - Equity Securities (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Debt and Equity Securities, FV-NI [Line Items]
Mutual funds	$ 2,159,000	$ 2,159,000
Equity securities available for sale				$ 2,050,000
Net gains recognized during the period on equity securities	16,000	72,000
Less: net gains recognized during the period on equity securities sold during the period	0	0
Unrealized gain recognized during the reporting period on equity securities still held at the reporting date	$ 16,000	$ 72,000
Equity Securities | Accumulated Other Comprehensive Income (Loss)
Debt and Equity Securities, FV-NI [Line Items]
Cumulative effect adjustment			$ 68,700

Loans and Allowance for Loan _3

Loans and Allowance for Loan Leases - Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	$ 3,638,693		$ 3,069,379
Less: Allowance for loan losses	42,995	$ 42,852	37,826	$ 33,540	$ 30,197	$ 26,091
Less: Net deferred loan fees and costs	8,901		8,632
Net loans	3,586,797		3,022,921
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	1,312,647		1,134,414
Less: Allowance for loan losses	24,811	22,975	16,584	13,183	11,739	11,378
Energy
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	396,132		358,283
Less: Allowance for loan losses	5,377	7,300	10,262	9,141	7,957	7,726
Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	993,153		846,561
Less: Allowance for loan losses	7,284	7,533	6,755	6,899	6,584	4,668
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	527,582		440,032
Less: Allowance for loan losses	3,016	2,602	2,475	2,667	2,530	1,200
Residential real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	365,435		246,275
Less: Allowance for loan losses	2,220	2,138	1,464	1,364	1,103	905
Equity lines of credit
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	22,192		20,286
Less: Allowance for loan losses	160	155	159	174	170	122
Consumer installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross loans	21,552		23,528
Less: Allowance for loan losses	$ 127	$ 149	$ 127	$ 112	$ 114	$ 92

Loans and Allowance for Loan _4

Loans and Allowance for Loan Leases - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Allowance for loan losses
Beginning balance	$ 42,852	$ 30,197	$ 37,826	$ 26,091
Provision charged to expense	4,850	3,000	10,550	9,000
Charge-offs	(4,708)	(97)	(5,973)	(2,007)
Recoveries	1	440	592	456
Ending balance	42,995	33,540	42,995	33,540
Ending balance
Individually evaluated for impairment	11,814		11,814		$ 9,400
Collectively evaluated for impairment	31,181		31,181		28,426
Allocated to loans:
Individually evaluated for impairment	95,469		95,469		111,651
Collectively evaluated for impairment	3,543,224		3,543,224		2,957,728
Total Loans Receivable	3,638,693		3,638,693		3,069,379
Commercial
Allowance for loan losses
Beginning balance	22,975	11,739	16,584	11,378
Provision charged to expense	3,535	1,102	11,166	2,031
Charge-offs	(1,700)	(97)	(2,954)	(681)
Recoveries	1	439	15	455
Ending balance	24,811	13,183	24,811	13,183
Ending balance
Individually evaluated for impairment	10,398		10,398		5,814
Collectively evaluated for impairment	14,413		14,413		10,770
Allocated to loans:
Individually evaluated for impairment	66,162		66,162		78,147
Collectively evaluated for impairment	1,246,485		1,246,485		1,056,267
Total Loans Receivable	1,312,647		1,312,647		1,134,414
Energy
Allowance for loan losses
Beginning balance	7,300	7,957	10,262	7,726
Provision charged to expense	1,077	1,184	(2,461)	2,671
Charge-offs	(3,000)	0	(3,000)	(1,256)
Recoveries	0	0	576	0
Ending balance	5,377	9,141	5,377	9,141
Ending balance
Individually evaluated for impairment	854		854		3,108
Collectively evaluated for impairment	4,523		4,523		7,154
Allocated to loans:
Individually evaluated for impairment	10,226		10,226		16,250
Collectively evaluated for impairment	385,906		385,906		342,033
Total Loans Receivable	396,132		396,132		358,283
Commercial real estate
Allowance for loan losses
Beginning balance	7,533	6,584	6,755	4,668
Provision charged to expense	(249)	315	529	2,231
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	7,284	6,899	7,284	6,899
Ending balance
Individually evaluated for impairment	343		343		473
Collectively evaluated for impairment	6,941		6,941		6,282
Allocated to loans:
Individually evaluated for impairment	16,544		16,544		15,227
Collectively evaluated for impairment	976,609		976,609		831,334
Total Loans Receivable	993,153		993,153		846,561
Construction and land development
Allowance for loan losses
Beginning balance	2,602	2,530	2,475	1,200
Provision charged to expense	414	137	541	1,467
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	3,016	2,667	3,016	2,667
Ending balance
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	3,016		3,016		2,475
Allocated to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	527,582		527,582		440,032
Total Loans Receivable	527,582		527,582		440,032
Residential real estate
Allowance for loan losses
Beginning balance	2,138	1,103	1,464	905
Provision charged to expense	82	261	756	459
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Ending balance	2,220	1,364	2,220	1,364
Ending balance
Individually evaluated for impairment	219		219		5
Collectively evaluated for impairment	2,001		2,001		1,459
Allocated to loans:
Individually evaluated for impairment	2,537		2,537		2,027
Collectively evaluated for impairment	362,898		362,898		244,248
Total Loans Receivable	365,435		365,435		246,275
Equity lines of credit
Allowance for loan losses
Beginning balance	155	170	159	122
Provision charged to expense	5	4	1	77
Charge-offs	0	0	0	(25)
Recoveries	0	0	0	0
Ending balance	160	174	160	174
Ending balance
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	160		160		159
Allocated to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	22,192		22,192		20,286
Total Loans Receivable	22,192		22,192		20,286
Consumer installment
Allowance for loan losses
Beginning balance	149	114	127	92
Provision charged to expense	(14)	(3)	18	64
Charge-offs	(8)	0	(19)	(45)
Recoveries	0	1	1	1
Ending balance	127	$ 112	127	$ 112
Ending balance
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	127		127		127
Allocated to loans:
Individually evaluated for impairment	0		0		0
Collectively evaluated for impairment	21,552		21,552		23,528
Total Loans Receivable	$ 21,552		$ 21,552		$ 23,528

Loans and Allowance for Loan _5

Loans and Allowance for Loan Leases - Internal Risk Ratings (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	$ 3,638,693	$ 3,069,379
Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	3,506,026	2,955,539
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	47,494	12,396
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	79,536	96,247
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	5,637	5,197
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	1,312,647	1,134,414
Commercial | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	1,217,280	1,056,505
Commercial | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	29,350	0
Commercial | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	66,017	73,824
Commercial | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	4,085
Commercial | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Energy
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	396,132	358,283
Energy | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	378,533	339,720
Energy | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	10,342	5,376
Energy | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	2,580	13,187
Energy | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	4,677	0
Energy | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	993,153	846,561
Commercial real estate | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	976,262	831,290
Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	7,529	6,950
Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	8,402	7,209
Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	960	1,112
Commercial real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	527,582	440,032
Construction and land development | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	527,582	440,032
Construction and land development | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Construction and land development | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Construction and land development | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Construction and land development | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	365,435	246,275
Residential real estate | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	362,625	244,178
Residential real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	273	70
Residential real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	2,537	2,027
Residential real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Residential real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Equity lines of credit
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	22,192	20,286
Equity lines of credit | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	22,192	20,286
Equity lines of credit | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Equity lines of credit | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Equity lines of credit | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Equity lines of credit | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Consumer installment
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	21,552	23,528
Consumer installment | Pass & Watch
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	21,552	23,528
Consumer installment | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Consumer installment | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Consumer installment | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	0	0
Consumer installment | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Gross loans	$ 0	$ 0

Loans and Allowance for Loan _6

Loans and Allowance for Loan Leases - Loan Aging Analysis (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 73,251	$ 19,289
Current	3,565,442	3,050,090
Total Loans Receivable	3,638,693	3,069,379
Loans 90 Days and Accruing	642	0
30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	61,941	3,062
60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,785	619
90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	8,525	15,608
Commercial
Financing Receivable, Past Due [Line Items]
Total Past Due	45,925	5,177
Current	1,266,722	1,129,237
Total Loans Receivable	1,312,647	1,134,414
Loans 90 Days and Accruing	0	0
Commercial | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	42,039	1,040
Commercial | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	2,785	0
Commercial | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	1,101	4,137
Energy
Financing Receivable, Past Due [Line Items]
Total Past Due	12,441	11,212
Current	383,691	347,071
Total Loans Receivable	396,132	358,283
Loans 90 Days and Accruing	642	0
Energy | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	7,122	1,994
Energy | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Energy | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	5,319	9,218
Commercial real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	410	2,678
Current	992,743	843,883
Total Loans Receivable	993,153	846,561
Loans 90 Days and Accruing	0	0
Commercial real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	317	0
Commercial real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	425
Commercial real estate | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	93	2,253
Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	12,345	0
Current	515,237	440,032
Total Loans Receivable	527,582	440,032
Loans 90 Days and Accruing	0	0
Construction and land development | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	12,345	0
Construction and land development | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Construction and land development | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	2,080	222
Current	363,355	246,053
Total Loans Receivable	365,435	246,275
Loans 90 Days and Accruing	0	0
Residential real estate | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	68	28
Residential real estate | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	194
Residential real estate | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	2,012	0
Equity lines of credit
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Current	22,192	20,286
Total Loans Receivable	22,192	20,286
Loans 90 Days and Accruing	0	0
Equity lines of credit | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Equity lines of credit | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Equity lines of credit | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Consumer installment
Financing Receivable, Past Due [Line Items]
Total Past Due	50	0
Current	21,502	23,528
Total Loans Receivable	21,552	23,528
Loans 90 Days and Accruing	0	0
Consumer installment | 30-59 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	50	0
Consumer installment | 60-89 Days Past Due
Financing Receivable, Past Due [Line Items]
Total Past Due	0	0
Consumer installment | 90 Days or More
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 0	$ 0

Loans and Allowance for Loan _7

Loans and Allowance for Loan Leases - Impaired Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Recorded Balance
Loans with a specific valuation	$ 52,000	$ 59,700
Total	95,469	111,651
Unpaid Principal Balance
Total	95,469	111,651
Specific Allowance	11,814	9,400
Commercial
Recorded Balance
Loans without a specific valuation	25,770	40,151
Loans with a specific valuation	40,392	37,996
Total	66,162	78,147
Unpaid Principal Balance
Loans without a specific valuation	25,770	40,151
Loans with a specific valuation	40,392	37,996
Total	66,162	78,147
Specific Allowance	10,398	5,814
Energy
Recorded Balance
Loans without a specific valuation	2,969	2,789
Loans with a specific valuation	7,257	13,461
Total	10,226	16,250
Unpaid Principal Balance
Loans without a specific valuation	2,969	2,789
Loans with a specific valuation	7,257	13,461
Total	10,226	16,250
Specific Allowance	854	3,108
Commercial real estate
Recorded Balance
Loans without a specific valuation	12,501	7,059
Loans with a specific valuation	4,043	8,168
Total	16,544	15,227
Unpaid Principal Balance
Loans without a specific valuation	12,501	7,059
Loans with a specific valuation	4,043	8,168
Total	16,544	15,227
Specific Allowance	343	473
Construction and land development
Recorded Balance
Loans without a specific valuation	0	0
Loans with a specific valuation	0	0
Total	0	0
Unpaid Principal Balance
Loans without a specific valuation	0	0
Loans with a specific valuation	0	0
Total	0	0
Specific Allowance	0	0
Residential real estate
Recorded Balance
Loans without a specific valuation	2,195	1,964
Loans with a specific valuation	342	63
Total	2,537	2,027
Unpaid Principal Balance
Loans without a specific valuation	2,195	1,964
Loans with a specific valuation	342	63
Total	2,537	2,027
Specific Allowance	219	5
Equity lines of credit
Recorded Balance
Loans without a specific valuation	0	0
Loans with a specific valuation	0	0
Total	0	0
Unpaid Principal Balance
Loans without a specific valuation	0	0
Loans with a specific valuation	0	0
Total	0	0
Specific Allowance	0	0
Consumer installment
Recorded Balance
Loans without a specific valuation	0	0
Loans with a specific valuation	0	0
Total	0	0
Unpaid Principal Balance
Loans without a specific valuation	0	0
Loans with a specific valuation	0	0
Total	0	0
Specific Allowance	$ 0	$ 0

Loans and Allowance for Loan _8

Loans and Allowance for Loan Leases - Impaired Loan Interest Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Financing Receivable, Impaired [Line Items]
Total interest income recognized	$ 692	$ 600	$ 1,816	$ 1,822
Total average impaired loans	87,261	55,455	83,238	56,001
Commercial
Financing Receivable, Impaired [Line Items]
Total interest income recognized	386	402	862	1,110
Total average impaired loans	54,410	27,671	49,265	26,849
Energy
Financing Receivable, Impaired [Line Items]
Total interest income recognized	98	93	324	369
Total average impaired loans	13,623	17,683	15,091	18,992
Commercial real estate
Financing Receivable, Impaired [Line Items]
Total interest income recognized	200	88	613	291
Total average impaired loans	16,690	8,055	16,528	8,101
Construction and land development
Financing Receivable, Impaired [Line Items]
Total interest income recognized	0	0	0	0
Total average impaired loans	0	0	0	0
Residential real estate
Financing Receivable, Impaired [Line Items]
Total interest income recognized	8	17	17	52
Total average impaired loans	2,538	2,046	2,354	2,059
Equity lines of credit
Financing Receivable, Impaired [Line Items]
Total interest income recognized	0	0	0	0
Total average impaired loans	0	0	0	0
Consumer installment
Financing Receivable, Impaired [Line Items]
Total interest income recognized	0	0	0	0
Total average impaired loans	$ 0	$ 0	$ 0	$ 0

Loans and Allowance for Loan _9

Loans and Allowance for Loan Leases - Non-Accrual Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	$ 43,626	$ 17,818
Commercial
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	34,201	4,781
Energy
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	4,677	9,219
Commercial real estate
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	2,680	3,517
Construction and land development
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	0	0
Residential real estate
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	2,068	301
Equity lines of credit
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	0	0
Consumer installment
Financing Receivable, Nonaccrual [Line Items]
Total non-accrual loans	$ 0	$ 0

Loans and Allowance for Loan_10

Loans and Allowance for Loan Leases - Troubled Debt Restructuring Loans (Details) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019USD ($)	Sep. 30, 2018USD ($)	Sep. 30, 2019USD ($)contract	Sep. 30, 2018USD ($)	Dec. 31, 2018USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	$ 0	$ 1,153	$ 34,766	$ 5,589
Number of Loans | contract			12		11
Outstanding Balance	44,781		$ 44,781		$ 10,272
Balance 90 days past due at any time during previous 12 months(1)			0		55
Commitments to borrowers	896		896		0
Increase in allowance for loan losses from loan restructuring			$ 8,800		$ 2,400
Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			7		6
Outstanding Balance	36,865		$ 36,865		$ 5,022
Balance 90 days past due at any time during previous 12 months(1)			$ 0		$ 55
Energy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			2		2
Outstanding Balance	2,969		$ 2,969		$ 3,631
Balance 90 days past due at any time during previous 12 months(1)			$ 0		$ 0
Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			3		2
Outstanding Balance	4,947		$ 4,947		$ 1,382
Balance 90 days past due at any time during previous 12 months(1)			$ 0		$ 0
Construction and land development
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			0		0
Outstanding Balance	0		$ 0		$ 0
Balance 90 days past due at any time during previous 12 months(1)			$ 0		$ 0
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			0		1
Outstanding Balance	0		$ 0		$ 237
Balance 90 days past due at any time during previous 12 months(1)			$ 0		$ 0
Equity lines of credit
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			0		0
Outstanding Balance	0		$ 0		$ 0
Balance 90 days past due at any time during previous 12 months(1)			$ 0		$ 0
Consumer installment
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | contract			0		0
Outstanding Balance	0		$ 0		$ 0
Balance 90 days past due at any time during previous 12 months(1)			0		$ 0
Deferred Payment | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	0	0	0	61
Reduction Of Monthly Payment | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	0	0	994	0
Reduction Of Monthly Payment | Energy
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	0	0	0	2,972
Reduction Of Monthly Payment | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	0	0	3,767	0
Extension of Maturity Date | Commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	0	0	30,005	300
Interest Rate Reduction | Commercial real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total troubled debt restructurings	$ 0	$ 1,153	$ 0	$ 2,256

Derivatives and Hedging - Deriv

Derivatives and Hedging - Derivatives Not Designated as Hedging Instruments (Details) - Interest Rate Swap - Not Designated as Hedging Instrument $ in Thousands	Sep. 30, 2019USD ($)derivative	Dec. 31, 2018USD ($)derivative
Derivative [Line Items]
Number of Instruments | derivative	46	20
Notional Amount | $	$ 308,960	$ 77,709

Derivatives and Hedging - Fair

Derivatives and Hedging - Fair Value of Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Derivative [Line Items]
Asset Derivatives	$ 13,735	$ 1,051
Liability Derivatives	13,782	1,136
Other Assets | Not Designated as Hedging Instrument | Interest Rate Products
Derivative [Line Items]
Asset Derivatives	13,735	1,051
Other Liabilities | Not Designated as Hedging Instrument | Interest Rate Products
Derivative [Line Items]
Liability Derivatives	$ 13,782	$ 1,136

Derivatives and Hedging - Offse

Derivatives and Hedging - Offsetting of Derivatives (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Offsetting of derivative assets
Gross Amounts of Recognized Assets and Liabilities	$ 13,735	$ 1,051
Gross Amounts Offset in the Statement of Financial Position	0	0
Net Amounts of Assets presented in the Statement of Financial Position	13,735	1,051
Financial Instruments	0	72
Cash Collateral Received	0	0
Net Amount	13,735	979
Offsetting of derivative liabilities
Gross Amounts of Recognized Assets and Liabilities	13,782	1,136
Gross Amounts Offset in the Statement of Financial Position	0	0
Net Amounts of Assets presented in the Statement of Financial Position	13,782	1,136
Financial Instruments	0	72
Cash Collateral Received	0	0
Net Amount	$ 13,782	$ 1,064

Derivatives and Hedging - Narra

Derivatives and Hedging - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative [Line Items]
Swap fee income	$ 1,879	$ 253	$ 2,415	$ 299
Collateral posted	18,200		18,200
Termination value of assets	13,800		$ 13,800
Change in Accounting Method Accounted for as Change in Estimate
Derivative [Line Items]
Swap fee income	$ 800

Interest-Bearing Deposits and_3

Interest-Bearing Deposits and Borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Time deposits
Within One Year	$ 822,439
One to Two Years	216,486
Two to Three Years	105,559
Three to Four Years	52,055
Four to Five Years	25,215
After Five Years	0
Total	1,221,754	$ 1,009,677
Fed funds purchased & repurchase agreements	49,810	75,406
FHLB borrowings
Within One Year	24,000
One to Two Years	76,500
Two to Three Years	16,500
Three to Four Years	39,704
Four to Five Years	0
After Five Years	151,100
Total	307,804	$ 312,985
Total
Within One Year	896,249
One to Two Years	292,986
Two to Three Years	122,059
Three to Four Years	91,759
Four to Five Years	25,215
After Five Years	152,012
Total	1,580,280
Trust preferred securities
Trust preferred securities
Within One Year	0
One to Two Years	0
Two to Three Years	0
Three to Four Years	0
Four to Five Years	0
After Five Years	912
Total	912
Total
Contract value	$ 2,500

Change in Accumulated Other C_3

Change in Accumulated Other Comprehensive Income (AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gain on sale of available for sale securities	$ 34	$ 195	$ 467	$ 608
Income tax expense	2,592	924	5,308	(904)
Net Income	10,384	6,354	29,173	9,256
Reclassification out of Accumulated Other Comprehensive Income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Gain on sale of available for sale securities	34	195	467	608
Income tax expense	9	47	115	149
Net Income	$ 25	$ 148	$ 352	$ 459

Regulatory Matters (Details)

Regulatory Matters (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Total Capital to Risk-Weighted Assets
Actual, amount	$ 618,407	$ 521,111
Actual, ratio	13.90%	13.50%
Tier I Capital to Risk-Weighted Assets
Actual, amount	$ 575,412	$ 483,285
Actual, ratio	12.90%	12.50%
Common Equity Tier 1 to Risk-Weighted Assets
Actual, amount	$ 574,500	$ 453,049
Actual, ratio	12.90%	11.70%
Tier I Capital to Average Assets
Actual, amount	$ 575,412	$ 483,285
Actual, ratio	12.60%	12.40%
Bank
Total Capital to Risk-Weighted Assets
Actual, amount	$ 567,667	$ 481,287
Actual, ratio	12.80%	12.50%
Required to be considered well capitalized, amount	$ 444,843	$ 385,184
Required to be considered well capitalized, ratio	10.00%	10.00%
Tier I Capital to Risk-Weighted Assets
Actual, amount	$ 524,672	$ 443,461
Actual, ratio	11.80%	11.50%
Required to be considered well capitalized, amount	$ 355,875	$ 308,147
Required to be considered well capitalized, ratio	8.00%	8.00%
Common Equity Tier 1 to Risk-Weighted Assets
Actual, amount	$ 524,672	$ 443,461
Actual, ratio	11.80%	11.50%
Required to be considered well capitalized, amount	$ 289,148	$ 250,369
Required to be considered well capitalized, ratio	6.50%	6.50%
Tier I Capital to Average Assets
Actual, amount	$ 524,672	$ 443,461
Actual, ratio	11.50%	11.40%
Required to be considered well capitalized, amount	$ 228,886	$ 194,275
Required to be considered well capitalized, ratio	5.00%	5.00%
Minimum Capital Required - Basel III Phase-In Schedule
Total Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 467,160	$ 380,873
Minimum capital required, Basel III phase-in schedule, ratio	10.50%	9.90%
Tier I Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 378,177	$ 303,734
Minimum capital required, Basel III phase-in schedule, ratio	8.50%	7.90%
Common Equity Tier 1 to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 311,440	$ 245,880
Minimum capital required, Basel III phase-in schedule, ratio	7.00%	6.40%
Tier I Capital to Average Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 183,152	$ 155,538
Minimum capital required, Basel III phase-in schedule, ratio	4.00%	4.00%
Minimum Capital Required - Basel III Phase-In Schedule | Bank
Total Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 467,085	$ 380,369
Minimum capital required, Basel III phase-in schedule, ratio	10.50%	9.90%
Tier I Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 378,117	$ 303,332
Minimum capital required, Basel III phase-in schedule, ratio	8.50%	7.90%
Common Equity Tier 1 to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 311,390	$ 245,555
Minimum capital required, Basel III phase-in schedule, ratio	7.00%	6.40%
Tier I Capital to Average Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 183,109	$ 155,420
Minimum capital required, Basel III phase-in schedule, ratio	4.00%	4.00%
Minimum Capital Required - Basel III Fully Phase-In
Total Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 467,160	$ 404,979
Minimum capital required, Basel III phase-in schedule, ratio	10.50%	10.50%
Tier I Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 378,177	$ 327,840
Minimum capital required, Basel III phase-in schedule, ratio	8.50%	8.50%
Common Equity Tier 1 to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 311,440	$ 269,986
Minimum capital required, Basel III phase-in schedule, ratio	7.00%	7.00%
Tier I Capital to Average Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 183,152	$ 155,538
Minimum capital required, Basel III phase-in schedule, ratio	4.00%	4.00%
Minimum Capital Required - Basel III Fully Phase-In | Bank
Total Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 467,085	$ 404,443
Minimum capital required, Basel III phase-in schedule, ratio	10.50%	10.50%
Tier I Capital to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 378,117	$ 327,406
Minimum capital required, Basel III phase-in schedule, ratio	8.50%	8.50%
Common Equity Tier 1 to Risk-Weighted Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 311,390	$ 269,629
Minimum capital required, Basel III phase-in schedule, ratio	7.00%	7.00%
Tier I Capital to Average Assets
Minimum capital required, Basel III phase-in schedule, amount	$ 183,109	$ 155,420
Minimum capital required, Basel III phase-in schedule, ratio	4.00%	4.00%

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Non-interest income subject to ASU 2014-09
Total non-interest income from contracts with customers	$ 759	$ 371	$ 2,363	$ 1,942
Non-interest income not subject to ASU 2014-09
Other non-interest income	2,453	814	4,166	2,946
Total non-interest income	3,212	1,185	6,529	4,888
Service charges and fees (rebates) on customer accounts
Non-interest income subject to ASU 2014-09
Total non-interest income from contracts with customers	72	(100)	441	506
ATM and credit card interchange income
Non-interest income subject to ASU 2014-09
Total non-interest income from contracts with customers	476	301	1,312	827
International fees
Non-interest income subject to ASU 2014-09
Total non-interest income from contracts with customers	199	160	506	579
Other fees
Non-interest income subject to ASU 2014-09
Total non-interest income from contracts with customers	$ 12	$ 10	$ 104	$ 30

Equity-Based Compensation - Nar

Equity-Based Compensation - Narrative (Details)	Sep. 30, 2019shares
2018 Omnibus Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for future issuance (in shares)	2,275,721

Equity-Based Compensation - Sto

Equity-Based Compensation - Stock Based Compensation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 1,324	$ 566	$ 3,606	$ 4,513
Stock appreciation rights
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	446	220	977	1,905
Performance based restricted units and stock
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	159	28	409	524
Restricted stock units
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	510	280	1,528	1,957
Restricted stock awards
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	209	0	656	0
Employee stock purchase plan
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Total stock-based compensation	$ 0	$ 38	$ 36	$ 127

Income Tax - Effective Income T

Income Tax - Effective Income Tax Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Statutory tax rate			21.00%
Computed at the statutory rate (21%)	$ 2,725	$ 1,529	$ 7,241	$ 1,754
Increase (decrease) resulting from
Tax-exempt income	(722)	(860)	(2,147)	(2,754)
Nondeductible expenses	71	87	208	261
State tax credit	0	0	(1,361)	0
State income taxes	566	124	1,526	245
Equity based compensation	(5)	0	(66)	(400)
Other adjustments	(43)	44	(93)	(10)
Actual tax expense (benefit)	$ 2,592	$ 924	$ 5,308	$ (904)

Income Tax - Deferred Taxes (De

Income Tax - Deferred Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Deferred tax assets
Net unrealized loss on securities available-for-sale	$ 0	$ 986
Allowance for loan losses	10,637	9,358
Lease incentive	306	329
Impairment of available for sale securities	498	498
Valuation allowance on real estate	0	396
Loan fees	2,202	2,135
Net operating loss carryover	370	398
Accrued expenses	105	1,927
Deferred compensation	2,317	1,838
Alternative minimum tax credits	0	2,365
State tax credit	3,517	2,506
Other	63	79
Deferred tax assets total	20,015	22,815
Deferred tax liability
Fair market value adjustments - trust preferred securities	(350)	(356)
Net unrealized gain on securities available-for-sale	(5,812)	0
FHLB stock basis	(936)	(739)
Premises and equipment	(4,301)	(5,019)
Other	(1,187)	(385)
Deferred tax liability total	(12,586)	(6,499)
Net deferred tax asset	$ 7,429	$ 16,316

Disclosures about Fair Value _3

Disclosures about Fair Value of Financial Instruments - Recurring Measurements (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial Assets
Available-for-sale securities	$ 730,934	$ 661,628
Mutual funds	2,159
Derivative assets	13,735	1,051
Derivative liabilities	13,782	1,136
Mortgage-backed - GSE residential
Financial Assets
Available-for-sale securities	160,714	129,287
Collateralized mortgage obligations - GSE residential
Financial Assets
Available-for-sale securities	148,675	152,626
State and political subdivisions
Financial Assets
Available-for-sale securities	420,009	378,058
Corporate bonds
Financial Assets
Available-for-sale securities	1,536	1,657
Fair Value, Recurring
Financial Assets
Mutual funds	2,159	2,050
Derivative assets		1,051
Derivative liabilities		1,136
Fair Value, Recurring | Mortgage-backed - GSE residential
Financial Assets
Available-for-sale securities	160,714	129,287
Fair Value, Recurring | Collateralized mortgage obligations - GSE residential
Financial Assets
Available-for-sale securities	148,675	152,626
Fair Value, Recurring | State and political subdivisions
Financial Assets
Available-for-sale securities	420,009	378,058
Fair Value, Recurring | Corporate bonds
Financial Assets
Available-for-sale securities	1,536	1,657
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring
Financial Assets
Mutual funds	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Mortgage-backed - GSE residential
Financial Assets
Available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Collateralized mortgage obligations - GSE residential
Financial Assets
Available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | State and political subdivisions
Financial Assets
Available-for-sale securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Fair Value, Recurring | Corporate bonds
Financial Assets
Available-for-sale securities	0	0
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring
Financial Assets
Mutual funds	2,159	2,050
Derivative assets	13,735	1,051
Derivative liabilities	13,782	1,136
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Mortgage-backed - GSE residential
Financial Assets
Available-for-sale securities	160,714	129,287
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Collateralized mortgage obligations - GSE residential
Financial Assets
Available-for-sale securities	148,675	152,626
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | State and political subdivisions
Financial Assets
Available-for-sale securities	420,009	378,058
Significant Other Observable Inputs (Level 2) | Fair Value, Recurring | Corporate bonds
Financial Assets
Available-for-sale securities	1,536	1,657
Unobservable Inputs (Level 3) | Fair Value, Recurring
Financial Assets
Mutual funds	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Unobservable Inputs (Level 3) | Fair Value, Recurring | Mortgage-backed - GSE residential
Financial Assets
Available-for-sale securities	0	0
Unobservable Inputs (Level 3) | Fair Value, Recurring | Collateralized mortgage obligations - GSE residential
Financial Assets
Available-for-sale securities	0	0
Unobservable Inputs (Level 3) | Fair Value, Recurring | State and political subdivisions
Financial Assets
Available-for-sale securities	0	0
Unobservable Inputs (Level 3) | Fair Value, Recurring | Corporate bonds
Financial Assets
Available-for-sale securities	$ 0	$ 0

Disclosures about Fair Value _4

Disclosures about Fair Value of Financial Instruments - Nonrecurring Measurements (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial Assets
Collateral-dependent impaired loans	$ 40,220	$ 50,288
Premises and equipment held-for-sale	0	3,444
Foreclosed assets held for sale	2,471	0
Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Collateral-dependent impaired loans	0	0
Premises and equipment held-for-sale	0	0
Foreclosed assets held for sale	0	0
Significant Other Observable Inputs (Level 2)
Financial Assets
Collateral-dependent impaired loans	0	0
Premises and equipment held-for-sale	0	3,444
Foreclosed assets held for sale	0	0
Unobservable Inputs (Level 3)
Financial Assets
Collateral-dependent impaired loans	40,220	50,288
Premises and equipment held-for-sale	0	0
Foreclosed assets held for sale	$ 2,471	$ 0

Disclosures about Fair Value _5

Disclosures about Fair Value of Financial Instruments - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Fair Value Disclosures [Abstract]
Impaired loans	$ 52,000	$ 59,700
Impaired loans, valuation allowance	$ 11,814	$ 9,400

Disclosures about Fair Value _6

Disclosures about Fair Value of Financial Instruments - Unobservable Inputs (Details) - Fair Value, Nonrecurring $ in Thousands	Sep. 30, 2019USD ($)	Dec. 31, 2018USD ($)
Financial Assets
Collateral-dependent impaired loans	$ 40,220	$ 50,288
Foreclosed assets held for sale	2,471	0
Unobservable Inputs (Level 3)
Financial Assets
Collateral-dependent impaired loans	40,220	50,288
Foreclosed assets held for sale	$ 2,471	$ 0
Unobservable Inputs (Level 3) | Marketability discount | Market comparable properties
Financial Assets
Foreclosed assets held for sale, measurement input	0.25
Unobservable Inputs (Level 3) | Marketability discount | Market comparable properties | Minimum
Financial Assets
Collateral-dependent impaired loans, measurement input	0.10	0.10
Unobservable Inputs (Level 3) | Marketability discount | Market comparable properties | Maximum
Financial Assets
Collateral-dependent impaired loans, measurement input	0.15	0.15
Unobservable Inputs (Level 3) | Marketability discount | Market comparable properties | Average
Financial Assets
Collateral-dependent impaired loans, measurement input	0.12	0.12

Disclosures about Fair Value _7

Disclosures about Fair Value of Financial Instruments - Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financial Assets
Available-for-sale securities	$ 730,934	$ 661,628
Restricted equity securities	16,053	14,525
Derivative assets	13,735	1,051
Financial Liabilities
Derivative liabilities	13,782	1,136
Carrying Amount
Financial Assets
Cash and cash equivalents	128,126	216,541
Available-for-sale securities	733,093	661,628
Loans, net of allowance for loan losses	3,586,797	3,022,921
Restricted equity securities	16,053	14,525
Interest receivable	15,909	14,092
Derivative assets	13,735	1,051
Total financial assets	4,493,713	3,930,758
Financial Liabilities
Deposits	3,658,108	3,208,097
Federal funds purchased and repurchase agreements	49,810	75,406
Federal Home Loan Bank advances	307,804	312,985
Other borrowings	912	884
Interest payable	4,643	2,868
Derivative liabilities	13,782	1,136
Total financial liabilities	4,035,059	3,601,376
Estimate of Fair Value Measurement
Financial Assets
Cash and cash equivalents	128,126	216,541
Available-for-sale securities	733,093	661,628
Loans, net of allowance for loan losses	3,607,276	3,027,930
Restricted equity securities	16,053	14,525
Interest receivable	15,909	14,092
Derivative assets	13,735	1,051
Total financial assets	4,514,192	3,935,767
Financial Liabilities
Deposits	3,676,572	3,180,496
Federal funds purchased and repurchase agreements	49,809	75,404
Federal Home Loan Bank advances	311,583	298,017
Other borrowings	2,054	2,022
Interest payable	4,643	2,868
Derivative liabilities	13,782	1,136
Total financial liabilities	4,058,443	3,559,943
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Financial Assets
Cash and cash equivalents	128,126	216,541
Available-for-sale securities	0	0
Loans, net of allowance for loan losses	0	0
Restricted equity securities	0	0
Interest receivable	0	0
Derivative assets	0	0
Total financial assets	128,126	216,541
Financial Liabilities
Deposits	513,832	484,284
Federal funds purchased and repurchase agreements	0	0
Federal Home Loan Bank advances	0	0
Other borrowings	0	0
Interest payable	0	0
Derivative liabilities	0	0
Total financial liabilities	513,832	484,284
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Financial Assets
Cash and cash equivalents	0	0
Available-for-sale securities	733,093	661,628
Loans, net of allowance for loan losses	0	0
Restricted equity securities	0	0
Interest receivable	15,909	14,092
Derivative assets	13,735	1,051
Total financial assets	762,737	676,771
Financial Liabilities
Deposits	0	0
Federal funds purchased and repurchase agreements	49,809	75,404
Federal Home Loan Bank advances	311,583	298,017
Other borrowings	2,054	2,022
Interest payable	4,643	2,868
Derivative liabilities	13,782	1,136
Total financial liabilities	381,871	379,447
Estimate of Fair Value Measurement | Unobservable Inputs (Level 3)
Financial Assets
Cash and cash equivalents	0	0
Available-for-sale securities	0	0
Loans, net of allowance for loan losses	3,607,276	3,027,930
Restricted equity securities	16,053	14,525
Interest receivable	0	0
Derivative assets	0	0
Total financial assets	3,623,329	3,042,455
Financial Liabilities
Deposits	3,162,740	2,696,212
Federal funds purchased and repurchase agreements	0	0
Federal Home Loan Bank advances	0	0
Other borrowings	0	0
Interest payable	0	0
Derivative liabilities	0	0
Total financial liabilities	$ 3,162,740	$ 2,696,212

Commitments and Credit Risk (De

Commitments and Credit Risk (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Loss Contingencies [Line Items]
Total commitments	$ 1,487,115	$ 1,416,656
Commitments to originate loans
Loss Contingencies [Line Items]
Total commitments	176,598	190,997
Standby letters of credit
Loss Contingencies [Line Items]
Total commitments	35,699	32,439
Lines of credit
Loss Contingencies [Line Items]
Total commitments	1,255,764	1,174,166
Future lease commitment
Loss Contingencies [Line Items]
Total commitments	$ 19,054	$ 19,054