Veritex (VBTX) 10-Q 27 Jul 18 2018 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2018	Jul. 25, 2018
Document and Entity Information [Abstract]
Entity Registrant Name	Veritex Holdings, Inc.
Entity Central Index Key	1,501,570
Document Type	10-Q
Document Period End Date	Jun. 30, 2018
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		24,182,127
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q2

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 30,130	$ 38,243
Interest bearing deposits in other banks	116,610	110,801
Total cash and cash equivalents	146,740	149,044
Investment securities	252,187	228,117
Loans held for sale	453	841
Loans, net of allowance for loan losses of $14,842 and $12,808, respectively	2,404,044	2,220,682
Accrued interest receivable	8,137	7,676
Bank-owned life insurance	21,767	21,476
Bank premises, furniture and equipment, net	76,348	75,251
Non-marketable equity securities	27,086	13,732
Investment in unconsolidated subsidiary	352	352
Other real estate owned	0	449
Intangible assets, net of accumulated amortization of $5,648 and $3,468, respectively	17,482	20,441
Goodwill	161,447	159,452
Other assets	15,831	14,518
Branch assets held for sale	1,753	33,552
Total assets	3,133,627	2,945,583
Deposits:
Noninterest-bearing	611,315	612,830
Interest-bearing	1,879,103	1,665,800
Total deposits	2,490,418	2,278,630
Accounts payable and accrued expenses	4,130	5,098
Accrued interest payable and other liabilities	5,856	5,446
Advances from Federal Home Loan Bank	108,092	71,164
Junior subordinated debentures	11,702	11,702
Subordinated notes	4,988	4,987
Other borrowings	0	15,000
Branch liabilities held for sale	0	64,627
Total liabilities	2,625,186	2,456,654
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.01 par value; 75,000,000 shares authorized at June 30, 2018 and December 31, 2017; 24,181,401 and 24,109,515 shares issued and outstanding at June 30, 2018 and December 31, 2017, respectively (excluding 10,000 shares held in treasury)	242	241
Additional paid-in capital	447,234	445,517
Retained earnings	65,208	44,627
Unallocated Employee Stock Ownership Plan shares; 9,771 shares at June 30, 2018 and December 31, 2017	(106)	(106)
Accumulated other comprehensive loss	(4,067)	(1,280)
Treasury stock, 10,000 shares at cost	(70)	(70)
Total stockholders’ equity	508,441	488,929
Total liabilities and stockholders’ equity	$ 3,133,627	$ 2,945,583

Condensed Consolidated Balance3

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 14,842	$ 12,808
Intangible assets, accumulated amortization	$ 5,648	$ 3,468
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	75,000,000	75,000,000
Common stock, shares issued (in shares)	24,181,401	24,109,515
Common stock, shares outstanding (in shares)	24,181,401	24,109,515
Unallocated Employee Stock Ownership Plan shares, shares (in shares)	9,771	9,771
Treasury stock, shares (in shares)	10,000	10,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Interest and fees on loans	$ 32,291	$ 13,024	$ 64,358	$ 24,907
Interest on investment securities	1,647	735	2,975	1,310
Interest on deposits in other banks	613	548	1,300	1,158
Interest on other	4	0	9	1
Total interest income	34,555	14,307	68,642	27,376
Interest expense:
Interest on deposit accounts	6,452	1,742	10,745	3,389
Interest on borrowings	479	189	1,171	358
Total interest expense	6,931	1,931	11,916	3,747
Net interest income	27,624	12,376	56,726	23,629
Provision for loan losses	1,504	943	2,182	1,833
Net interest income after provision for loan losses	26,120	11,433	54,544	21,796
Noninterest income:
Service charges and fees on deposit accounts	846	555	1,779	1,064
Gain on sales of investment securities	4	0	12	0
Net gain on sales of loans and other assets owned	416	807	997	1,554
Bank-owned life insurance	192	186	381	373
Other	1,134	218	2,204	310
Total noninterest income	2,592	1,766	5,373	3,301
Noninterest expense:
Salaries and employee benefits	7,902	3,642	15,832	7,550
Occupancy and equipment	2,143	1,015	5,377	2,026
Professional fees	1,703	1,188	3,505	1,986
Data processing and software expense	1,076	372	1,904	732
FDIC assessment fees	236	393	538	651
Marketing	446	225	907	469
Other assets owned expenses and write-downs	0	13	172	38
Amortization of intangibles	856	95	1,834	190
Telephone and communications	414	106	840	208
Other	1,393	733	2,566	1,382
Total noninterest expense	16,169	7,782	33,475	15,232
Net income from operations	12,543	5,417	26,442	9,865
Income tax expense	2,350	1,802	5,861	3,152
Net income	$ 10,193	$ 3,615	$ 20,581	$ 6,713
Basic earnings per share (in dollars per share)	$ 0.42	$ 0.24	$ 0.85	$ 0.44
Diluted earnings per share (in dollars per share)	$ 0.42	$ 0.23	$ 0.84	$ 0.43

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net income	$ 10,193	$ 3,615	$ 20,581	$ 6,713
Other comprehensive (loss) income:
Unrealized (losses) gains on securities available for sale arising during the period, net	(573)	1,318	(3,516)	1,622
Reclassification adjustment for net gains included in net income	4	0	12	0
Other comprehensive (loss) income before tax	(577)	1,318	(3,528)	1,622
Income tax (benefit) expense	(121)	445	(741)	549
Other comprehensive (loss) income, net of tax	(456)	873	(2,787)	1,073
Comprehensive income	$ 9,737	$ 4,488	$ 17,794	$ 7,786

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Unallocated Employee Stock Ownership Plan Shares	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2016		15,195,328
Beginning balance at Dec. 31, 2016	$ 239,088	$ 152	$ 211,173	$ 29,290	$ (1,248)	$ (209)	$ (70)
Increase (Decrease) in Stockholders' Equity
Restricted stock units vested, net of shares withheld to cover tax withholdings (in shares)		22,233
Restricted stock units vested, net of shares withheld to cover tax withholdings	(191)		(191)
Exercise of employee stock options, net of 4,391 shares for cashless exercise and net of shares 1,691 withheld to cover tax withholdings (in shares)		15,449
Exercise of employee stock options, net of 4,391 and 1,691 of shares withheld for cashless exercise and to cover tax withholdings, respectively	144		144
Stock based compensation	791		791
Offering costs from sale of common stock	(16)		(16)
Net income	6,713			6,713
Other comprehensive loss	1,073				1,073
Ending balance (in shares) at Jun. 30, 2017		15,233,010
Ending balance at Jun. 30, 2017	$ 247,602	$ 152	211,901	36,003	(175)	(209)	(70)
Beginning balance (in shares) at Dec. 31, 2017	24,109,515	24,109,515
Beginning balance at Dec. 31, 2017	$ 488,929	$ 241	445,517	44,627	(1,280)	(106)	(70)
Increase (Decrease) in Stockholders' Equity
Restricted stock units vested, net of shares withheld to cover tax withholdings (in shares)		64,485
Restricted stock units vested, net of shares withheld to cover tax withholdings	(389)	$ 1	(390)
Exercise of employee stock options, net of 4,391 shares for cashless exercise and net of shares 1,691 withheld to cover tax withholdings (in shares)		7,401
Exercise of employee stock options, net of 4,391 and 1,691 of shares withheld for cashless exercise and to cover tax withholdings, respectively	(29)		(29)
Stock based compensation	2,136		2,136
Net income	20,581			20,581
Other comprehensive loss	$ (2,787)				(2,787)
Ending balance (in shares) at Jun. 30, 2018	24,181,401	24,181,401
Ending balance at Jun. 30, 2018	$ 508,441	$ 242	$ 447,234	$ 65,208	$ (4,067)	$ (106)	$ (70)

Condensed Consolidated Stateme7

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Restricted Stock Units
Shares withheld to cover tax withholdings (in shares)	13,599	7,103,000
Employee Stock Options
Shares withheld to cover tax withholdings (in shares)	1,691	1,095,000
Shares paid for cashless exercise (in shares)	4,391

Condensed Consolidated Stateme8

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Cash flows from operating activities:
Net income	$ 20,581	$ 6,713
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,719	877
Provision for loan losses	2,182	1,833
Accretion of loan purchase discount	(2,944)	(190)
Stock-based compensation expense	2,136	791
Excess tax benefit from stock compensation	(156)	(214)
Net amortization of premiums on investment securities	974	634
Change in cash surrender value of bank-owned life insurance	(291)	(292)
Net gain on sales of investment securities	(12)	0
Gain on sales of loans held for sale	(393)	(515)
Gain on sales of SBA loans	(604)	(1,047)
Net loss on sales of other real estate owned	0	(8)
Amortization of subordinated note discount and debt issuance costs	0	4
Net originations of loans held for sale	(19,361)	(20,336)
Write down on other real estate owned	156	0
Proceeds from sales of loans held for sale	20,142	21,941
Gain on sale of branches	(355)	0
Decrease (increase) in accrued interest receivable and other assets	1,165	(1,196)
(Decrease) increase in accounts payable, accrued expenses, accrued interest payable and other liabilities	(144)	158
Net cash provided by operating activities	26,795	9,169
Cash flows from investing activities:
Cash settlement for sale of branches	(33,557)	0
Purchases of securities available for sale	(74,405)	(40,354)
Sales of securities available for sale	30,961	0
Proceeds from maturities, calls and pay downs of investment securities	14,884	9,194
Purchases of non-marketable equity securities, net	(13,354)	(41)
Net loans originated	(193,998)	(145,758)
Proceeds from sale of SBA loans	7,952	15,792
Net additions to bank premises and equipment	(1,474)	(1,151)
Purchase of other real estate owned	0	336
Proceeds from sales of other real estate owned	291	497
Net cash used in investing activities	(262,700)	(162,157)
Cash flows from financing activities:
Net change in deposits	212,091	91,477
Net change in advances from Federal Home Loan Bank	36,928	(71)
Net change in other borrowings	(15,000)	0
Proceeds from exercise of employee stock options	27	150
Payments to tax authorities for stock-based compensation	(445)	(197)
Offering costs paid in connection with acquisition	0	(16)
Net cash provided by financing activities	233,601	91,343
Net decrease in cash and cash equivalents	(2,304)	(61,645)
Cash and cash equivalents at beginning of period	149,044	234,791
Cash and cash equivalents at end of period	$ 146,740	$ 173,146

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Nature of Organization Veritex Holdings, Inc. (“Veritex” or the “Company”), a Texas corporation and bank holding company, was incorporated in July 2009 and was formed for the purpose of acquiring one or more financial institutions located in Dallas, Texas and surrounding areas. Veritex through its wholly-owned subsidiary, Veritex Community Bank (the “Bank”), is a Texas state banking organization, with corporate offices in Dallas, Texas, and currently operates 20 branches and one mortgage office located in the Dallas-Fort Worth metroplex and one branch in the Houston metropolitan area. The Bank provides a full range of banking services to individual and corporate customers, which include commercial and retail lending, and the acceptance of checking and savings deposits. The Texas Department of Banking and the Board of Governors of the Federal Reserve System are the primary regulators of the Company and the Bank, which perform periodic examinations to ensure regulatory compliance. Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of Veritex and the Bank as its wholly-owned subsidiary. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”), but do not include all of the information and footnotes required for complete financial statements. Intercompany transactions and balances are eliminated in consolidation. In management’s opinion, these interim unaudited condensed consolidated financial statements include all adjustments of a normal recurring nature necessary for a fair statement of the Company’s condensed consolidated financial position at June 30, 2018 and December 31, 2017 , condensed consolidated results of operations for the three and six months ended June 30, 2018 and 2017 , condensed consolidated stockholders’ equity for the six months ended June 30, 2018 and 2017 and condensed consolidated cash flows for the six months ended June 30, 2018 and 2017 . Accounting measurements at interim dates inherently involve greater reliance on estimates than at year end and the results for the interim periods shown herein are not necessarily indicative of results to be expected for the full year due in part to global economic and financial market conditions, interest rates, access to sources of liquidity, market competition and interruptions of business processes. These interim unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2017 included within the Company’s Form 10-K as filed with the Securities and Exchange Commission on March 14, 2018. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. These estimates and assumptions may also affect disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates. Segment Reporting The Company has one reportable segment. All of the Company’s activities are interrelated, and each activity is dependent and assessed based on how each of the activities of the Company supports the others. For example, lending is dependent upon the ability of the Company to fund itself with deposits and borrowings while managing the interest rate and credit risk. Accordingly, all significant operating decisions are based upon analysis of the Bank as one segment or unit. The Company’s chief operating decision-maker, the Chief Executive Officer, uses the consolidated results to make operating and strategic decisions. Reclassifications Some items in the prior year financial statements were reclassified to conform to the current presentation. Revenue from Contracts with Customers The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods. The Company’s primary sources of revenue are derived from interest income on financial assets that are not within the scope of Topic 606. The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Condensed Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is little judgment involved in applying Topic 606 that significantly affects the determination of the amount and timing of revenue from contracts with customers. Earnings Per Share Earnings per share (“EPS”) are based upon the weighted-average shares outstanding. The table below sets forth the reconciliation between weighted average shares used for calculating basic and diluted EPS for the three and six months ended June 30, 2018 and 2017 : Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Earnings (numerator) Net income $ 10,193 $ 3,615 $ 20,581 $ 6,713 Shares (denominator) in thousands Weighted average shares outstanding for basic EPS 24,148 15,211 24,139 15,205 Dilutive effect of employee stock-based awards 398 426 388 428 Adjusted weighted average shares outstanding 24,546 15,637 24,527 15,633 Earnings per share: Basic $ 0.42 $ 0.24 $ 0.85 $ 0.44 Diluted $ 0.42 $ 0.23 $ 0.84 $ 0.43 For the three and six months ended June 30, 2018 and 2017 , there were no antidilutive shares excluded from the diluted EPS weighted average shares. Adoption of New Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which requires an entity to 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. The ASU replaces most existing revenue recognition guidance in GAAP. The new standard was effective for the Company on January 1, 2018. Adoption of ASU 2014-09 did not have a material impact on the Company’s condensed consolidated financial statements and related disclosures as the Company’s primary sources of revenues are derived from interest income on financial assets that are not within the scope of ASU 2014-09. The Company’s revenue recognition pattern for revenue streams within the scope of ASU 2014-09, including but not limited to service charges on deposit accounts, did not change significantly from current practice. The standard permits the use of either the full retrospective or modified retrospective transition method. The Company elected to use the modified retrospective transition method which requires application of ASU 2014-09 to uncompleted contracts at the date of adoption. However, periods prior to the date of adoption will not be retrospectively revised as the impact of the ASU on uncompleted contracts at the date of adoption was not material. In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”) which amends certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. ASU 2016-01, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale. The adoption of ASU 2016-01 on January 1, 2018 did not have a material impact on the Company’s condensed consolidated financial statements. In accordance with (iv) above, the Company measured the fair value of its loan portfolio prospectively using an exit price notion. See Note 7 – Fair Value Disclosures for further information regarding the valuation of these loans. Recent Accounting Pronouncements ASU 2017-04 “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”) eliminates Step 2 from the goodwill impairment test. In addition, the amendment eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. For public companies, ASU 2017-04 is effective for fiscal years beginning after December 15, 2019 with early adoption permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is in process of evaluating the impact of this pronouncement, which is not expected to have a significant impact on the consolidated financial statements. ASU 2016-13 “Financial Instruments —Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) amends guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, Topic 326 eliminates the probable initial recognition threshold in current GAAP and, instead, requires an entity to reflect its current estimate of all expected credit losses. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however Topic 326 will require that credit losses be presented as an allowance rather than as a write-down. ASU 2016-13 affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities, ASU 2016-13 is effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods therein. The Company is continuing to evaluate the impact of the adoption of ASU 2016-13 and is uncertain of the impact on the consolidated financial statements at this point in time. ASU 2016-02 “Leases (Topic 842)” (“ASU 2016-02”) is intended to improve the reporting of leasing transactions to provide users of financial statements with more decision-useful information. ASU 2016-02 will require organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company leases certain properties and equipment under operating leases that will result in the recognition of lease assets and lease liabilities on the Company’s balance sheet under ASU 2016-02, however, the majority of the Company’s properties and equipment are owned, not leased. We expect recorded assets and liabilities to increase upon adoption of the standard as it relates to operating leases in which we are the lessee.

Supplemental Statement of Cash

Supplemental Statement of Cash Flows	6 Months Ended
	Jun. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Supplemental Statement of Cash Flows	Supplemental Statement of Cash Flows Other supplemental cash flow information is presented below: Six Months Ended June 30, 2018 2017 Supplemental Disclosures of Cash Flow Information: Cash paid for interest $ 11,962 $ 3,745 Cash paid for income taxes 5,100 3,500 Supplemental Disclosures of Non-Cash Flow Information: Net foreclosure of other real estate owned and repossessed assets $ 8 $ — Non-cash assets acquired (1) Loans $ (4,050 ) $ — Bank premises, furniture and equipment 1,162 — Intangible assets (956 ) — Goodwill 1,995 — Other assets 1,806 — Non-cash liabilities assumed (1) Deposits $ 303 $ — Accrued interest payable and other liabilities (260 ) — (1) Represents adjustments to provisional estimates recorded for acquisitions of Sovereign Bancshares, Inc. and Liberty Bancshares, Inc.. Refer to Note 12. Business Combinations for further discussion.

Investment Securities

Investment Securities	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities Debt and equity securities have been classified in the condensed consolidated balance sheets according to management’s intent. The amortized cost, related gross unrealized gains and losses recognized in accumulated other comprehensive loss, and the fair value of securities are as follows: June 30, 2018 Amortized Gross Gross Fair Value Available for Sale U.S. government agencies $ 10,365 $ — $ 221 $ 10,144 Corporate bonds 20,842 61 48 20,855 Municipal securities 43,792 37 391 43,438 Mortgage-backed securities 92,998 11 2,746 90,263 Collateralized mortgage obligations 88,781 18 1,872 86,927 Asset-backed securities 557 3 — 560 $ 257,335 $ 130 $ 5,278 $ 252,187 December 31, 2017 Amortized Gross Gross Fair Value Available for Sale U.S. government agencies $ 10,829 $ 9 $ 18 $ 10,820 Corporate bonds 17,500 330 — 17,830 Municipal securities 55,499 189 211 55,477 Mortgage-backed securities 91,734 58 1,068 90,724 Collateralized mortgage obligations 53,559 9 925 52,643 Asset-backed securities 616 7 — 623 $ 229,737 $ 602 $ 2,222 $ 228,117 The following tables disclose the Company’s investment securities that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months: June 30, 2018 Less Than 12 Months 12 Months or More Totals Fair Unrealized Fair Unrealized Fair Unrealized Available for Sale U.S. government agencies $ 9,572 $ 199 $ 572 $ 22 $ 10,144 $ 221 Corporate bonds 3,795 48 — — 3,795 48 Municipal securities 24,582 220 5,395 171 29,977 391 Mortgage-backed securities 62,519 1,726 25,934 1,020 88,453 2,746 Collateralized mortgage obligations 42,031 874 23,231 998 65,262 1,872 $ 142,499 $ 3,067 $ 55,132 $ 2,211 $ 197,631 $ 5,278 December 31, 2017 Less Than 12 Months 12 Months or More Totals Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loss Available for Sale U.S. government agencies $ 3,470 $ 4 $ 629 $ 14 $ 4,099 $ 18 Municipal securities 14,593 79 7,092 132 21,685 211 Mortgage-backed securities 52,075 513 29,485 555 81,560 1,068 Collateralized mortgage obligations 31,581 395 20,305 530 51,886 925 $ 101,719 $ 991 $ 57,511 $ 1,231 $ 159,230 $ 2,222 The number of investment positions in an unrealized loss position totaled 144 and 118 at June 30, 2018 and December 31, 2017 , respectively. The Company does not believe these unrealized losses are “other than temporary.” In estimating other-than-temporary impairment losses, management considers, among other things, the length of time and the extent to which the fair value has been less than cost and the Company’s financial condition and near-term prospects. Additionally, (i) management does not have the intent to sell investment securities prior to recovery and/or maturity, (ii) it is more likely than not that the Company will not have to sell these securities prior to recovery and/or maturity and (iii) that the length of time and extent that fair value has been less than cost is not indicative of recoverability. The unrealized losses noted are interest rate related due to the level of interest rates at June 30, 2018 compared to the time of purchase. The Company has reviewed the ratings of the issuers and has not identified any issues related to the ultimate repayment of principal as a result of credit concerns on these securities. The amortized costs and estimated fair values of securities available for sale, by contractual maturity, as of the dates indicated, are shown in the table below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayments penalties. Mortgage-backed securities, collateralized mortgage obligations, and asset-backed securities typically are issued with stated principal amounts, and the securities are backed by pools of mortgage loans and other loans that have varying maturities. The term of mortgage-backed, collateralized mortgage obligations and asset-backed securities thus approximates the term of the underlying mortgages and loans and can vary significantly due to prepayments. Therefore, these securities are not included in the maturity categories below. June 30, 2018 Available For Sale Amortized Fair Due in one year or less $ 2,135 $ 2,139 Due from one year to five years 33,878 33,677 Due from five years to ten years 22,924 22,753 Due after ten years 16,062 15,868 74,999 74,437 Mortgage-backed securities 92,998 90,263 Collateralized mortgage obligations 88,781 86,927 Asset-backed securities 557 560 $ 257,335 $ 252,187 December 31, 2017 Available For Sale Amortized Fair Due in one year or less $ 2,328 $ 2,330 Due from one year to five years 29,654 29,991 Due from five years to ten years 34,480 34,474 Due after ten years 17,366 17,332 83,828 84,127 Mortgage-backed securities 91,734 90,724 Collateralized mortgage obligations 53,559 52,643 Asset-backed securities 616 623 $ 229,737 $ 228,117 Proceeds from sales of investment securities available for sale and gross gains and losses for the six months ended June 30, 2018 and 2017 were as follows: Six Months Ended June 30, 2018 2017 Proceeds from sales $ 30,961 $ — Gross realized gains 335 — Gross realized losses 323 — There was a blanket floating lien on all securities held by the Company to secure Federal Home Loan Bank advances as of June 30, 2018 and December 31, 2017 .

Loans and Allowance for Loan Lo

Loans and Allowance for Loan Losses	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Loans and Allowance for Loan Losses	Loans and Allowance for Loan Losses Loans in the accompanying condensed consolidated balance sheets are summarized as follows: June 30, December 31, Real estate: Construction and land $ 300,262 $ 277,825 Farmland 10,815 9,385 1 - 4 family residential 283,486 236,542 Multi-family residential 109,621 106,275 Commercial Real Estate 1,015,463 909,292 Commercial 691,718 684,551 Consumer 7,543 9,648 2,418,908 2,233,518 Deferred loan fees (22 ) (28 ) Allowance for loan losses (14,842 ) (12,808 ) $ 2,404,044 $ 2,220,682 Included in the net loan portfolio as of June 30, 2018 and December 31, 2017 is an accretable discount related to purchased performing and purchased credit impaired (“PCI”) loans acquired within a business combination in the approximate amounts of $12,033 and $12,135 , respectively. The discount is being accreted into income on a level-yield basis over the life of the loans. In addition, included in the net loan portfolio as of June 30, 2018 and December 31, 2017 is a discount on retained loans from sale of originated Small Business Administration (“SBA”) loans of $1,705 and $1,189 , respectively. The majority of the loan portfolio is comprised of loans to businesses and individuals in the Dallas-Fort Worth metroplex and the Houston metropolitan area. This geographic concentration subjects the loan portfolio to the general economic conditions within these areas. The risks created by this concentration have been considered by management in the determination of the adequacy of the allowance for loan losses. Management believes the allowance for loan losses was adequate to cover estimated losses on loans as of June 30, 2018 and December 31, 2017 . Non-Accrual and Past Due Loans Loans are considered past due if the required principal and interest payments have not been received as of the date such payments were due. Loans are placed on non-accrual status when, in management’s opinion, the borrower may be unable to meet payment obligations as they become due, as well as when required by regulatory provisions. Loans may be placed on non-accrual status regardless of whether or not such loans are considered past due. When interest accrual is discontinued, all unpaid accrued interest is reversed. Interest income is subsequently recognized only to the extent cash payments are received in excess of principal due. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Non-accrual loans aggregated by class of loans, as of June 30, 2018 and December 31, 2017 , are as follows: Non-Accrual Loans (1) June 30, December 31, Real estate: Construction and land $ 2,136 $ — Farmland — — 1 - 4 family residential — — Multi-family residential — — Commercial Real Estate 54 61 Commercial 2,058 398 Consumer 4 6 $ 4,252 $ 465 (1 ) Excludes PCI loans. PCI loans are generally reported as accrual loans unless significant concerns exist related to the predictability of the timing and amount of future cash flows. During the three and six months ended June 30, 2018, interest income not recognized on non-accrual loans was $7 and $33 . During the three and six months ended June 30, 2017, interest income not recognized on non-accrual loans was minimal. An age analysis of past due loans, aggregated by class of loans, as of June 30, 2018 and December 31, 2017 is as follows: June 30, 2018 30 to 59 Days 60 to 89 Days 90 Days or Greater Total Past Due Total Current (1) Total Total 90 Days Past Due and Still Accruing (2) Real estate: Construction and land $ 46 $ 356 $ — $ 402 $ 299,860 $ 300,262 $ — Farmland — — — — 10,815 10,815 — 1 - 4 family residential 1,571 101 — 1,672 281,814 283,486 — Multi-family residential — — — — 109,621 109,621 — Commercial Real Estate 1,443 — — 1,443 1,014,020 1,015,463 — Commercial 5,951 280 2,169 8,400 683,318 691,718 613 Consumer 122 8 — 130 7,413 7,543 — $ 9,133 $ 745 $ 2,169 $ 12,047 $ 2,406,861 $ 2,418,908 $ 613 (1) Includes all PCI loans. (2) There were no PCI loans 90 days past due and still accruing as of June 30, 2018 . No PCI loans were considered non-performing loans as of June 30, 2018 . December 31, 2017 30 to 59 Days 60 to 89 Days 90 Days or Greater Total Past Due Total Current (1)(3) Total Total 90 Days Past Due and Still Accruing (2) Real estate: Construction and land $ 320 $ — $ — $ 320 $ 277,505 $ 277,825 $ — Farmland 104 — — 104 9,281 9,385 — 1 - 4 family residential 1,274 139 — 1,413 235,129 236,542 — Multi-family residential — — — — 106,275 106,275 — Commercial Real Estate 1,830 — — 1,830 907,462 909,292 — Commercial 1,849 389 389 2,627 681,924 684,551 — Consumer 39 51 18 108 9,540 9,648 18 $ 5,416 $ 579 $ 407 $ 6,402 $ 2,227,116 $ 2,233,518 $ 18 (1) Includes all PCI loans. (2) Loans 90 days past due and still accruing excludes $3,300 of PCI loans as of December 31, 2017 . No PCI loans were considered non-performing loans as of December 31, 2017 . (3) To conform to the current period presentation, $15,123 was reclassified from 1-4 family residential to multi-family residential within the total current column. Loans past due 90 days and still accruing increase d from $18 as of December 31, 2017 to $613 as of June 30, 2018 . These loans are also considered well-secured and in the process of collection with plans in place for the borrowers to bring the notes fully current. The Company believes that it will collect all principal and interest due on each of the loans past due 90 days and still accruing. Impaired Loans Impaired loans are those loans where it is probable the Company will be unable to collect all amounts due in accordance with the original contractual terms of the loan agreement, including scheduled principal and interest payments. All troubled debt restructurings (“TDRs”) are considered impaired loans. Impaired loans are measured based on either the present value of expected future cash flows discounted at the loan’s effective interest rate; the loan’s observable market price; or the fair value of the collateral if the loan is collateral dependent. Substantially all of the Company’s impaired loans are measured at the fair value of the collateral. Impaired loans, or portions thereof, are charged off when deemed uncollectible. Impaired loans and TDRs, at June 30, 2018 and December 31, 2017 , are summarized in the following tables. June 30, 2018 (1) Unpaid Recorded Recorded Total Related Average Real estate: Construction and land $ 2,136 $ 2,136 $ — $ 2,136 $ — $ 2,298 Farmland — — — — — — 1 - 4 family residential 160 160 — 160 — 161 Multi-family residential — — — — — — Commercial Real Estate 368 368 — 368 — 371 Commercial 2,128 2,081 258 2,339 65 2,226 Consumer 69 69 — 69 — 76 Total $ 4,861 $ 4,814 $ 258 $ 5,072 $ 65 $ 5,132 (1) Loans reported exclude PCI loans. December 31, 2017 (1) Unpaid Recorded Recorded Total Related Average Real estate: Construction and land $ — $ — $ — $ — $ — $ — Farmland — — — — — — 1 - 4 family residential 161 161 — 161 — 163 Multi-family residential — — — — — — Commercial Real Estate 434 434 — 434 — 445 Commercial 398 282 116 398 12 499 Consumer 75 75 — 75 — 87 Total $ 1,068 $ 952 $ 116 $ 1,068 $ 12 $ 1,194 (1) Loans reported exclude PCI loans. Interest payments on impaired loans are typically applied to principal unless collectability of the principal amount is reasonably assured, in which case interest is recognized on a cash basis. During the six months ended June 30, 2018 and 2017 , total interest income and cash-based interest income recognized on impaired loans was minimal. Troubled Debt Restructuring Modifications of terms for the Company’s loans and their inclusion as TDRs are based on individual facts and circumstances. Loan modifications that are included as TDRs may involve a reduction of the stated interest rate of the loan, an extension of the maturity date at a stated rate of interest lower than the current market rate for new debt with similar risk, or deferral of principal payments, regardless of the period of the modification. The recorded investment in TDRs was $603 and $618 as of June 30, 2018 and December 31, 2017 , respectively. There were no new TDRs during the six months ended June 30, 2018 and 2017. There were no loans modified as TDR loans within the previous 12 months and for which there was a payment default during the six months ended June 30, 2018 and 2017. A default for purposes of this disclosure is a TDR loan in which the borrower is 90 days past due or results in the foreclosure and repossession of the applicable collateral. Interest income recorded during the three and six months ended June 30, 2018 and 2017 on TDR loans and interest income that would have been recorded had the terms of the loans not been modified was minimal. The Company has not committed to lend additional amounts to customers with outstanding loans classified as TDRs as of June 30, 2018 or December 31, 2017 . Credit Quality Indicators From a credit risk standpoint, the Company classifies its loans in one of the following categories: (i) pass, (ii) special mention, (iii) substandard or (iv) doubtful. Loans classified as loss are charged-off. Loans not rated special mention, substandard, doubtful, or loss are classified as pass loans. The classifications of loans reflect a judgment about the risks of default and loss associated with the loan. The Company reviews the ratings on criticized credits monthly. Ratings are adjusted to reflect the degree of risk and loss that is felt to be inherent in each credit as of each monthly reporting period. All classified credits are evaluated for impairment. If impairment is determined to exist, a specific reserve is established. The Company’s methodology is structured so that specific reserves are increased in accordance with deterioration in credit quality (and a corresponding increase in risk and loss) or decreased in accordance with improvement in credit quality (and a corresponding decrease in risk and loss). Credits rated special mention show clear signs of financial weaknesses or deterioration in credit worthiness, however, such concerns are not so pronounced that the Company generally expects to experience significant loss within the short-term. Such credits typically maintain the ability to perform within standard credit terms and credit exposure is not as prominent as credits with a lower rating. Credits rated substandard are those in which the normal repayment of principal and interest may be, or has been, jeopardized by reason of adverse trends or developments of a financial, managerial, economic or political nature, or important weaknesses which exist in collateral. A protracted workout on these credits is a distinct possibility. Prompt corrective action is therefore required to strengthen the Company’s position, and/or to reduce exposure and to assure that adequate remedial measures are taken by the borrower. Credit exposure becomes more likely in such credits and a serious evaluation of the secondary support to the credit is performed. Credits rated doubtful are those in which full collection of principal appears highly questionable, and in which some degree of loss is anticipated, even though the ultimate amount of loss may not yet be certain and/or other factors exist which could affect collection of debt. Based upon available information, positive action by the Company is required to avert or minimize loss. Credits rated doubtful are generally also placed on non-accrual. Credits classified as PCI are those that, at acquisition date, had the characteristics of substandard loans and it was probable, at acquisition, that all contractually required principal and interest payments would not be collected. The Company evaluates these loans on a projected cash flow basis with this evaluation performed quarterly. The following tables summarize the Company’s internal ratings of its loans, including PCI loans, as of June 30, 2018 and December 31, 2017 : June 30, 2018 Pass Special Substandard Doubtful PCI Total Real estate: Construction and land $ 297,819 $ 307 $ 2,136 $ — $ — $ 300,262 Farmland 10,783 — — — 32 10,815 1 - 4 family residential 282,767 309 318 — 92 283,486 Multi-family residential 109,621 — — — — 109,621 Commercial Real Estate 985,302 10,251 2,890 — 17,020 1,015,463 Commercial 651,912 7,280 8,118 — 24,408 691,718 Consumer 7,453 — 90 — — 7,543 Total $ 2,345,657 $ 18,147 $ 13,552 $ — $ 41,552 $ 2,418,908 December 31, 2017 Pass (1) Special Mention Substandard Doubtful PCI Total Real estate: Construction and land $ 277,186 $ 639 $ — $ — $ — $ 277,825 Farmland 9,336 — — — 49 9,385 1 - 4 family residential 235,781 462 200 — 99 236,542 Multi-family residential 106,275 — — — — 106,275 Commercial Real Estate 882,523 8,771 681 — 17,317 909,292 Commercial 634,796 18,337 1,155 116 30,147 684,551 Consumer 9,540 — 108 — — 9,648 Total $ 2,155,437 $ 28,209 $ 2,144 $ 116 $ 47,612 $ 2,233,518 (1) To conform to the current period presentation, $15,123 was reclassified from 1-4 family residential to multi-family residential within the pass column. There were no reclassifications between internal rating buckets. An analysis of the allowance for loan losses for the six months ended June 30, 2018 and 2017 and year ended December 31, 2017 is as follows: Six Months Ended June 30, 2018 Year Ended December 31, 2017 Six Months Ended June 30, 2017 Balance at beginning of period $ 12,808 $ 8,524 $ 8,524 Provision charged to earnings 2,182 5,114 1,833 Charge-offs (171 ) (839 ) (622 ) Recoveries 23 9 5 Net charge-offs (148 ) (830 ) (617 ) Balance at end of period $ 14,842 $ 12,808 $ 9,740 The allowance for loan losses as a percentage of total loans was 0.61% , 0.57% and 0.87% as of June 30, 2018 , December 31, 2017 , and June 30, 2017 , respectively. The following tables summarize the activity in the allowance for loan losses by portfolio segment for the periods indicated. At June 30, 2018 , the allowance for loan losses related to PCI loans totaled $333 which is included in the specific reserves amount in the table below. There were no allowance for loan losses related to PCI loans at December 31, 2017 and June 30, 2017 . For the Six Months Ended June 30, 2018 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Balance at beginning of period $ 1,315 $ 1,473 $ 4,410 $ 5,588 $ 22 $ 12,808 Provision (recapture) charged to earnings 275 172 1,189 525 21 2,182 Charge-offs — — — (150 ) (21 ) (171 ) Recoveries — — — 23 — 23 Net charge-offs — — — (127 ) (21 ) (148 ) Balance at end of period $ 1,590 $ 1,645 $ 5,599 $ 5,986 $ 22 $ 14,842 Period-end amount allocated to: Specific reserves: — — — 398 — 398 General reserves 1,590 1,645 5,599 5,588 22 14,444 Total $ 1,590 $ 1,645 $ 5,599 $ 5,986 $ 22 $ 14,842 For the Year Ended December 31, 2017 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Balance at beginning of period $ 1,415 $ 1,116 $ 3,003 $ 2,955 $ 35 $ 8,524 Provision (recapture) charged to earnings (100 ) 368 1,407 3,452 (13 ) 5,114 Charge-offs — (11 ) — (828 ) — (839 ) Recoveries — — — 9 — 9 Net charge-offs — (11 ) — (819 ) — (830 ) Balance at end of period $ 1,315 $ 1,473 $ 4,410 $ 5,588 $ 22 $ 12,808 Period-end amount allocated to: Specific reserves: — — — 12 — 12 General reserves 1,315 1,473 4,410 5,576 22 12,796 Total $ 1,315 $ 1,473 $ 4,410 $ 5,588 $ 22 $ 12,808 For the Six Months Ended June 30, 2017 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Balance at beginning of year $ 1,415 $ 1,116 $ 3,003 $ 2,955 $ 35 $ 8,524 Provision (recapture) charged to earnings (291 ) 370 554 1,205 (5 ) 1,833 Charge-offs — (11 ) — (611 ) — (622 ) Recoveries — — — 5 — 5 Net charge-offs (recoveries) — (11 ) — (606 ) — (617 ) Balance at end of period $ 1,124 $ 1,475 $ 3,557 $ 3,554 $ 30 $ 9,740 Period-end amount allocated to: Specific reserves: — — — 137 1 138 General reserves 1,124 1,475 3,557 3,417 29 9,602 Total $ 1,124 $ 1,475 $ 3,557 $ 3,554 $ 30 $ 9,740 The Company’s recorded investment in loans as of June 30, 2018 and December 31, 2017 related to the balance in the allowance for loan losses on the basis of the Company’s impairment methodology is as follows: June 30, 2018 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Loans individually evaluated for impairment $ 2,136 $ 160 $ 368 $ 2,128 $ 69 $ 4,861 Loans collectively evaluated for impairment 308,909 392,855 998,075 665,182 7,474 2,372,495 PCI loans 32 92 17,020 24,408 — 41,552 Total $ 311,077 $ 393,107 $ 1,015,463 $ 691,718 $ 7,543 $ 2,418,908 December 31, 2017 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Loans individually evaluated for impairment $ — $ 161 $ 434 $ 398 $ 75 $ 1,068 Loans collectively evaluated for impairment 287,161 342,557 891,541 654,006 9,573 2,184,838 PCI loans 49 99 17,317 30,147 — 47,612 Total $ 287,210 $ 342,817 $ 909,292 $ 684,551 $ 9,648 $ 2,233,518 Loans acquired with evidence of credit quality deterioration at acquisition, for which it was probable that the Company would not be able to collect all contractual amounts due, were accounted for as PCI loans. The carrying amount of PCI loans included in the condensed consolidated balance sheets and the related outstanding balances at June 30, 2018 and December 31, 2017 are set forth in the table below. The outstanding balance represents the total amount owed, including accrued but unpaid interest, and any amounts previously charged off. June 30, 2018 December 31, 2017 Carrying amount $ 41,552 $ 47,612 Outstanding balance 53,330 63,940 Changes in the accretable yield for PCI loans for the three and six months ended June 30, 2018 are included in table below. There was no accretable yield balance for PCI loans for the three or six months ended June 30, 2017. Three Months Ended June 30, 2018 Six Months Ended June 30, 2018 Balance at beginning of period $ 8,139 $ 2,723 Purchase accounting adjustments 45 1,459 Reclassifications from nonaccretable 351 6,221 Accretion (1,200 ) (3,068 ) Balance at end of period $ 7,335 $ 7,335 Servicing Assets The Company was servicing loans of approximately $74,615 and $44,720 as of June 30, 2018 and 2017, respectively. A summary of the changes in the related servicing assets are as follows: Six Months Ended June 30, 2018 2017 Balance at beginning of period $ 1,215 $ 601 Increase from loan sales 177 281 Amortization charged to income (209 ) (88 ) Balance at end of period $ 1,183 $ 794 The estimated fair value of the servicing assets approximated the carrying amount at June 30, 2018 , December 31, 2017 , and June 30, 2017 . Fair value is estimated by discounting estimated future cash flows from the servicing assets using discount rates that approximate current market rates over the expected lives of the loans being serviced. A valuation allowance is recorded when the fair value is below the carrying amount of the asset. As of June 30, 2018 and 2017, there was no valuation allowance recorded. The Company may also receive a portion of subsequent interest collections on loans sold that exceed the contractual servicing fee. In that case, the Company records an interest-only strip based on its relative fair market value and the other components of the loans. There was no interest-only strip receivable recorded at June 30, 2018 and December 31, 2017 .

Income Taxes

Income Taxes	6 Months Ended
	Jun. 30, 2018
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s tax provision was $5,861 and $3,152 resulting in an effective tax rate of 22.2% and 32.0% , respectively, for the six months ended June 30, 2018 and 2017 . The Company’s effective tax rate, before the net impact of discrete items, was approximately 20.0% and 34.5% for the six months ended June 30, 2018 and 2017 , respectively. The decrease in the effective tax rate in the comparative periods was primarily due to the enactment of the Tax Cuts and Jobs Act (the “Tax Act”) on December 22, 2017 which lowered our federal statutory tax rate, effective on January 1, 2018. Authoritative guidance and interpretation by regulatory bodies is ongoing and as such, the accounting for the effects of the Tax Act is not final and the full impact of the new regulation is still being evaluated. The Company’s provision for the six months ended June 30, 2018 was primarily impacted by discrete tax expense from the re-measurement of the Company’s deferred taxes totaling $722 as a result of changes made to recorded provisional estimates for the Sovereign Bancshares, Inc. (“Sovereign”) and Liberty Bancshares, Inc. (“Liberty”) acquisitions that were updated based on information obtained during the six months ended June 30, 2018 . The additional discrete tax provision from tax re-measurements was partially offset by a net discrete tax benefit of $156 from the recognition of excess tax benefits on share-based payment awards during the six months ended June 30, 2018 . For the six months ended June 30, 2017, the Company’s provision was impacted by a net discrete tax benefit of $255 primarily associated with the recognition of excess tax benefit on share-based payment awards. The Company’s tax provision was $2,350 and $1,802 resulting in an effective tax rate of 18.7% and 33.3% , respectively, for the three months ended June 30, 2018 and 2017 . The Company’s effective tax rate, before the net impact of discrete tax items, was approximately 19.7% and 34.8% for the three months ended June 30, 2018 and 2017 , respectively. The decrease in the effective tax rate in the comparative periods was primarily due to the enactment of the Tax Act, as discussed above. The Company’s provision for the three months ended June 30, 2018 was primarily impacted by discrete tax benefits from the re-measurement of the Company’s deferred taxes totaling $98 related to changes made to recorded provisional estimates for the Liberty acquisitions made in the second quarter of 2018. For the three months ended June 30, 2017, the Company’s provision was impacted by a net discrete tax benefit of $83 primarily associated with the recognition of excess tax benefit on share-based payment awards.

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation The Company may from time to time be involved in legal actions arising from normal business activities. Management believes that these actions are without merit or that the ultimate liability, if any, resulting from them will not materially affect the financial position or results of operations of the Company. Lessee: Cease-Use Liability As part of the Sovereign acquisition and the Company’s evaluation of its acquired facilities owned or leased for ongoing economic benefit, a decision was made to cease using two acquired leases in the fourth quarter of 2017 for leases that expire between 2026 and 2029. In accordance with accounting for exit and disposal activities, the Company recognized a liability in 2017 for lease exit costs incurred when it no longer derived economic benefits from the related leases. In January 2018, the Company entered into an assignment agreement to assign one of our branch leases to a third party for one of the two leases that the Company ceased using during 2017. As a result of the lease assignment, the Company reversed $669 of the cease-use liability during the six months ended June 30, 2018 . A cease-use liability of $695 and $1,407 is included in accrued interest payable and other liabilities in the condensed consolidated balance sheets as of June 30, 2018 and December 31, 2017 , respectively. The below table is a roll-forward of the cease-use liability from December 31, 2017 to June 30, 2018 . Cease-Use Liability Balance at December 31, 2017 $ 1,407 Payments (43 ) Reversal upon lease assignment (669 ) Balance at June 30, 2018 $ 695 Qualified Affordable Housing Investment Starting in 2017, the Company began investing in certain qualified housing projects. As of June 30, 2018 and December 31, 2017 , the balance of the investment for qualified affordable housing projects was $3,719 and $1,982 , respectively, which includes an additional $1,900 investment entered into during the second quarter of 2018. This balance is reflected in non-marketable equity securities on the condensed consolidated balance sheets. The total unfunded commitment related to the investment in certain qualified housing projects totaled $3,149 and $1,765 as of June 30, 2018 and December 31, 2017 , respectively. The Company expects to fulfill these commitments during the year ending 2034.

Fair Value Disclosures

Fair Value Disclosures	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Fair Value Disclosures	Fair Value Disclosures The following table summarizes assets measured at fair value on a recurring basis as of June 30, 2018 and December 31, 2017 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Level 1 Level 2 Level 3 Total As of June 30, 2018 Investment securities available for sale $ — $ 252,187 $ — $ 252,187 As of December 31, 2017 Investment securities available for sale $ — $ 228,117 $ — $ 228,117 There were no liabilities measured at fair value on a recurring basis as of June 30, 2018 or December 31, 2017 . There were no transfers between Level 2 and Level 3 during the six months ended June 30, 2018 and 2017 . The following table summarizes assets measured at fair value on a non-recurring basis as of June 30, 2018 and December 31, 2017 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Level 1 Level 2 Level 3 Total As of June 30, 2018 Assets: Impaired loans $ — $ — $ 258 $ 258 As of December 31, 2017 Assets: Impaired loans $ — $ — $ 116 $ 116 Other real estate owned $ — $ — $ 449 $ 449 At June 30, 2018 , impaired loans had a carrying value of $258 , with $65 specific allowance for loan loss allocated. At December 31, 2017 , impaired loans had a carrying value of $116 , with $12 specific allowance for loan loss allocated. There were no liabilities measured at fair value on a non-recurring basis as of June 30, 2018 or December 31, 2017 . For Level 3 financial assets measured at fair value as of June 30, 2018 and December 31, 2017 , the significant unobservable inputs used in the fair value measurements were as follows: June 30, 2018 Valuation Unobservable Weighted Assets/Liabilities Fair Value Technique Input(s) Average Impaired loans $ 258 Collateral Method Adjustments for selling costs 8 % December 31, 2017 Valuation Unobservable Weighted Assets/Liabilities Fair Value Technique Input(s) Average Impaired loans $ 116 Collateral Method Adjustments for selling costs 8 % Other real estate owned $ 449 Collateral Method Adjustments for selling costs 8 % Fair Value of Financial Instruments Please refer to Note 16 of the Company’s 2017 Annual Report on Form 10-K for our methods of determining the fair value of financial instruments presented in this Note. The methods are consistent with our methodologies disclosed in the Company’s 2017 Annual Report on Form 10-K, except for the valuation of loans which was impact by the adoption of ASU 2016-01. In accordance with ASU 2016-01, the fair value of loans, excluding previously presented impaired loans measured at fair value on a non-recurring basis, is estimated using a discounted cash flow analyses. The discount rates used to determine fair value use interest rate spreads that reflect factors such as liquidity, credit, and prepayment risk of the loans. Loans are considered a Level 3 classification. As of June 30, 2018, branch assets held for sale is solely comprised of bank premises, furniture and equipment with its fair value determined based on a third party appraisal of similar properties. As of December 31, 2017, branch assets held for sale included loans, accrued interest, bank premises, furniture and equipment, intangible assets and the cash balances related to branches that were held for sale. The carrying amount of cash and cash equivalents, accrued interest and intangible assets approximated their fair value. The fair value of the bank premises, furniture and equipment was determined based on third party appraisals of similar properties. The fair value of the loans held for sale was estimated using discounted cash flow analysis, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality. See Note 14 - Branch Assets and Liabilities Held for Sale for for additional information. The estimated fair values and carrying values of all financial instruments under current authoritative guidance as of June 30, 2018 and December 31, 2017 were as follows: Fair Value Carrying Level 1 Level 2 Level 3 June 30, 2018 Financial assets: Cash and cash equivalents $ 146,740 $ — $ 146,740 $ — Loans held for sale 453 — 453 — Loans, net 2,404,044 — — 2,420,850 Accrued interest receivable 8,137 — 8,137 — Bank-owned life insurance 21,767 — 21,767 — Servicing asset 1,183 — 1,183 — Non-marketable equity securities 27,086 — 27,086 — Financial instruments, assets held for sale 1,753 — 1,753 — Financial liabilities: Deposits $ 2,490,418 $ — $ 2,432,512 $ — Advances from FHLB 108,092 — 108,128 — Accrued interest payable 900 — 900 — Junior subordinated debentures 11,702 — 11,702 — Subordinated notes 4,988 — 4,988 — December 31, 2017 Financial assets: Cash and cash equivalents $ 149,044 $ — $ 149,044 $ — Loans held for sale 841 — 841 — Loans, net 2,220,682 — — 2,234,094 Accrued interest receivable 7,676 — 7,676 — Bank-owned life insurance 21,476 — 21,476 — Servicing asset 1,243 — 1,243 — Non-marketable equity securities 13,732 — 13,732 — Financial instruments, assets held for sale 31,828 5,515 26,313 Financial liabilities: Deposits $ 2,278,630 $ — $ 2,164,498 $ — Advances from FHLB 71,164 — 70,110 — Accrued interest payable 445 — 445 — Junior subordinated debentures 11,702 — 11,702 — Subordinated notes 4,987 — 4,987 — Other borrowings 15,000 — 15,000 — Financial instruments, liabilities held for sale 64,300 — 64,300 —

Financial Instruments with Off-

Financial Instruments with Off-Balance Sheet Risk	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Financial Instruments with Off-Balance Sheet Risk	Financial Instruments with Off-Balance Sheet Risk The Company is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the condensed consolidated balance sheets. The Company’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for on balance sheet instruments. The following table sets forth the approximate amounts of these financial instruments as of June 30, 2018 and December 31, 2017 : June 30, December 31, 2018 2017 Commitments to extend credit $ 707,679 $ 606,451 Standby and commercial letters of credit 6,654 9,299 $ 714,333 $ 615,750 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. Management evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of credit, is based on management’s credit evaluation of the borrower. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Standby letters of credit generally have fixed expiration dates or other termination clauses and may require payment of a fee. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company’s policy for obtaining collateral and the nature of such collateral is essentially the same as that involved in making commitments to extend credit. Although the maximum exposure to loss is the amount of such commitments, management currently anticipates no material losses from such activities.

Stock and Incentive Plans

Stock and Incentive Plans	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock and Incentive Plans	Stock and Incentive Plans 2010 Stock Option and Equity Incentive Plan During the six months ended June 30, 2018 and 2017 , the Company did not award any restricted stock units, non-performance based stock options or performance-based stock options under the 2010 Incentive Plan. Stock compensation expense related to the 2010 Incentive Plan recognized in the accompanying condensed consolidated statements of income totaled $6 and $11 for the three and six months ended June 30, 2018 and $20 and $42 for the three and six months ended June 30, 2017 , respectively. A summary of option activity under the 2010 Incentive Plan for the six months ended June 30, 2018 and 2017 , and changes during the period then ended is presented below: 2010 Incentive Plan Non-Performance Based Stock Options Shares Underlying Options Weighted Exercise Price Weighted Average Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2017 325,500 $ 10.15 4.56 years Exercised (15,000 ) 10.00 Outstanding at June 30, 2017 310,500 $ 10.16 4.09 years Options exercisable at June 30, 2017 297,000 $ 10.12 4.00 years Outstanding at January 1, 2018 305,000 $ 10.16 3.59 years $ 5,316 Exercised (11,500 ) 10.48 237 Outstanding at June 30, 2018 293,500 $ 10.15 3.04 years $ 6,139 Options exercisable at June 30, 2018 289,500 $ 10.13 3.00 years $ 6,063 As of June 30, 2018 , December 31, 2017 and June 30, 2017 , there was approximately $5 , $8 and $15 , respectively, of unrecognized compensation expense related to non-performance based stock options. The unrecognized compensation expense at June 30, 2018 is expected to be recognized over the remaining weighted average requisite service period of 0.69 years . A summary of the status of the Company’s restricted stock units under the 2010 Incentive Plan as of June 30, 2018 and 2017 , and changes during the six months then ended is as follows: 2010 Incentive Plan Nonperformance-based restricted stock units Units Weighted Average Grant Date Fair Value Outstanding at January 1, 2017 27,750 $ 11.92 Vested into shares (1,000 ) 10.85 Forfeited (500 ) $ 10.85 Outstanding at June 30, 2017 26,250 $ 11.98 Outstanding at January 1, 2018 24,250 $ 13.19 Vested into shares (23,750 ) 12.14 Forfeited (500 ) 10.85 Outstanding at June 30, 2018 — $ — As of June 30, 2018 , December 31, 2017 and June 30, 2017 there was $8 , $15 and $54 of total unrecognized compensation expense related to nonvested restricted stock units. A summary of the fair value of the Company’s stock options exercised and restricted stock units vested under the 2010 Incentive Plan as of June 30, 2018 and 2017 is presented below: Fair Value of Options Exercised or Restricted Stock Units Vested as of June 30, 2018 2017 Non-performance based stock options exercised 328 422 Non-performance based restricted stock units vested 713 26 2014 Omnibus Plan During the six months ended June 30, 2018 , the Company awarded 54,650 non-performance restricted stock units, 40,269 performance based restricted stock units, and 125,593 non-performance based stock options under the 2014 Omnibus Plan. During the six months ended June 30, 2017 , the Company awarded 31,375 non-performance based restricted stock units, and 25,522 performance based restricted stock units, and 65,440 non-performance-based stock options under the 2014 Omnibus Plan. The non-performance options granted during the six months ended June 30, 2018 vest equally over three years from the grant date. The performance based restricted stock units granted during the six months ended June 30, 2018 include a performance criteria based on the Company’s total shareholder return relative to a market index that determines the number of restricted stock units that may vest equally over a three -year period from the date of grant. The non-performance restricted stock units granted during the six months ended June 30, 2018 vest equally over a three -year period from the date of grant. Compensation expense for option and restricted stock unit awards granted under the 2014 Omnibus Plan was approximately $1,360 and $2,125 for the three and six months ended June 30, 2018 and $374 and $749 for the three and six months ended June 30, 2017 , respectively. The fair value of each option award is estimated on the grant date using the Black-Scholes option-pricing model with the following assumptions used for the grants for the six months ended June 30, 2018 and 2017 : Six Months Ended June 30, 2018 2018 2017 Dividend yield 0.00% 0.00% Expected life 6.5 to 7.5 years 5.0 to 7.5 years Expected volatility 27.87% to 30.36% 32.10% to 37.55% Risk-free interest rate 2.30% to 2.94% 1.06% to 2.32% The expected life is based on the amount of time that options granted are expected to be outstanding. The dividend yield assumption is based on the Company’s history. The expected volatility is based on historical volatility of the Company. The risk-free interest rates are based upon yields of U.S. Treasury issues with a term equal to the expected life of the option being valued. A summary of the status of the Company’s stock options under the 2014 Omnibus Plan as of June 30, 2018 and 2017 , and changes during the six months ended is as follows: 2014 Omnibus Plan Non-performance Based Stock Options Shares Weighted Weighted Aggregate Intrinsic Value Outstanding at January 1, 2017 128,366 $ 15.32 8.69 years Granted 65,440 26.89 Forfeited (3,465 ) 21.24 Exercised (1,544 ) 15.00 Outstanding at June 30, 2017 188,797 $ 19.22 8.63 years Options exercisable at June 30, 2017 51,204 $ 14.96 7.93 years Outstanding at January 1, 2018 332,706 $ 22.71 8.86 years $ 1,614 Granted 125,593 27.95 Exercised (1,983 ) 14.95 32 Outstanding at June 30, 2018 456,316 $ 24.14 8.68 years $ 3,142 Options exercisable at June 30, 2018 106,729 $ 17.41 7.35 years $ 1,457 Weighted average fair value of options granted during the period $ 9.66 As of June 30, 2018 , December 31, 2017 , and June 30, 2017 there was $2,655 , $1,958 , and $881 of total unrecognized compensation expense related to options awarded under the 2014 Omnibus Plan, respectively. The unrecognized compensation expense at June 30, 2018 is expected to be recognized over the remaining weighted average requisite service period of 2.51 years . A summary of the status of the Company’s non-performance based restricted stock units under the 2014 Omnibus Plan as of June 30, 2018 and 2017 , and changes during the six months ended is as follows: 2014 Omnibus Plan Non-performance Based Restricted Stock Units Units Weighted Average Grant Date Fair Value Outstanding at January 1, 2017 67,956 $ 13.79 Granted 31,375 27.49 Vested into shares (8,475 ) 25.42 Forfeited (2,250 ) 27.93 Options exercisable at June 30, 2017 88,606 $ 17.17 Outstanding at January 1, 2018 150,722 $ 13.29 Granted 54,650 29.29 Vested into shares (27,711 ) 27.99 Forfeited (3,501 ) 28.35 Outstanding at June 30, 2018 174,160 $ 15.67 A summary of the status of the Company’s performance based restricted stock units under the 2014 Omnibus Plan as of June 30, 2018 and 2017 , and changes during the six months ended is as follows: 2014 Omnibus Plan Performance Based Restricted Stock Units Units Weighted Average Grant Date Fair Value Outstanding at January 1, 2017 51,197 $ 8.72 Granted 25,522 24.34 Vested into shares (19,861 ) 15.34 Forfeited (2,014 ) 15.68 Options exercisable at June 30, 2017 54,844 $ 13.33 Outstanding at January 1, 2018 53,594 $ 8.72 Granted 40,269 27.59 Vested into shares (26,623 ) 18.83 Outstanding at June 30, 2018 67,240 $ 16.01 As of June 30, 2018 , December 31, 2017 and June 30, 2017 there was $4,577 , $3,592 and $1,923 of total unrecognized compensation related to restricted stock units awarded under the 2014 Omnibus Plan, respectively. A summary of the fair value of the Company’s stock options exercised and restricted stock units vested under the 2014 Omnibus Plan as of June 30, 2018 and 2017 is presented below: Fair Value of Options Exercised or Restricted Stock Units Vested as of June 30, 2018 2017 Non-performance based stock options exercised 54 41 Non-performance based restricted stock units vested 745 233 Performance based restricted stock units vested 810 530

Significant Concentrations of C

Significant Concentrations of Credit Risk	6 Months Ended
	Jun. 30, 2018
Risks and Uncertainties [Abstract]
Significant Concentrations of Credit Risk	Significant Concentrations of Credit Risk Most of the Company’s business activity is with customers located within the Dallas-Fort Worth metroplex and Houston metropolitan area. Such customers are normally also depositors of the Company. The distribution of commitments to extend credit approximates the distribution of loans outstanding. Commercial and standby letters of credit were granted primarily to commercial borrowers. The contractual amounts of credit related financial instruments such as commitments to extend credit, credit card arrangements, and letters of credit represent the amounts of potential accounting loss should the contract be fully drawn upon, the customer default, and the value of any existing collateral become worthless.

Capital Requirements and Restri

Capital Requirements and Restrictions on Retained Earnings	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Capital Requirements and Restrictions on Retained Earnings	Capital Requirements and Restrictions on Retained Earnings The Company, on a consolidated basis, and the Bank are subject to various regulatory capital requirements administered by 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 financial statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company must meet specific capital guidelines that involve quantitative measures of the Company’s assets, liabilities, and certain off balance sheet items as calculated under regulatory accounting practices. The Company’s capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total, CET1 and Tier 1 capital (as defined in the regulations) to risk weighted assets (as defined), and of Tier 1 capital (as defined) to average assets (as defined). Management believes, as of June 30, 2018 and December 31, 2017 that the Company and the Bank met all capital adequacy requirements to which they were subject. As of June 30, 2018 and December 31, 2017 , the Company’s and the Bank’s capital ratios exceeded those levels necessary to be categorized as “well capitalized” under the regulatory framework for prompt corrective action. To be categorized as “well capitalized,” the Company and the Bank must maintain minimum total risk-based, CET1, Tier 1 risk-based and Tier 1 leverage ratios as set forth in the table. There are no conditions or events since June 30, 2018 that management believes have changed the Company’s categorization as “well capitalized.” A comparison of the Company’s and Bank’s actual capital amounts and ratios to required capital amounts and ratios is presented in the following table: Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio As of June 30, 2018 Total capital (to risk-weighted assets) Company $ 368,196 13.31 % $ 221,305 8.0 % n/a n/a Bank 323,627 11.70 % 221,283 8.0 % $ 276,604 10.0 % Tier 1 capital (to risk-weighted assets) Company 348,365 12.60 % 165,888 6.0 % n/a n/a Bank 308,785 11.16 % 166,013 6.0 % 221,351 8.0 Common equity tier 1 to risk-weighted assets Company 336,664 12.17 % 124,485 4.5 % n/a n/a Bank 308,785 11.16 % 124,510 4.5 % 179,848 6.5 Tier 1 capital (to average assets) Company 348,365 12.08 % 115,353 4.0 % n/a n/a Bank 308,785 10.70 % 115,434 4.0 % 144,292 5.0 As of December 31, 2017 Total capital (to risk-weighted assets) Company $ 342,521 13.16 % $ 208,219 8.0 % n/a n/a Bank 296,207 11.37 % 208,413 8.0 % $ 260,516 10.0 % Tier 1 capital (to risk-weighted assets) Company 324,726 12.48 % 156,118 6.0 % n/a n/a Bank 283,399 10.88 % 156,286 6.0 % 208,382 8.0 Common equity tier 1 to risk-weighted assets Company 313,024 12.03 % 11,791 4.5 % n/a n/a Bank 283,399 10.88 % 117,215 4.5 % 169,310 6.5 Tier 1 capital (to average assets) Company 324,726 12.92 % 100,534 4.0 % n/a n/a Bank 283,399 11.28 % 100,496 4.0 % 125,620 5.0

Business Combinations

Business Combinations	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Business Combinations	Business Combinations All acquisitions were accounted for using the acquisition method of accounting. Accordingly, the assets and liabilities of the acquired entities were recorded at their estimated fair values at the acquisition date. ASC 820 defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market willing participants at the measurement date. The Company determines the estimated fair values after review and consideration of relevant information, including discounted cash flows, quoted market prices, third party valuations, and estimates made by management. The excess of the purchase price over the estimated fair value of the net assets for tax-free acquisitions is recorded as goodwill, none of which is deductible for tax purposes. Acquisition-related costs are recognized separately from the acquisition and are expensed as incurred. The results of operations for each acquisition have been included in the Company’s consolidated financial results beginning on the respective acquisition date. Sovereign Bancshares, Inc. On August 1, 2017, the Company acquired Sovereign, a Texas corporation and parent company of Sovereign Bank. The Company issued 5,117,642 shares of its common stock and paid out $ 56,215 in cash to Sovereign in consideration for the acquisition. Additionally, under the terms of the merger agreement, each share of Sovereign SBLF Preferred Stock, no par value, issued and outstanding immediately prior to the effective time was converted into one share of Veritex Series D Preferred Stock. The business combination was accounted for under the acquisition method of accounting. Under this method of accounting, assets acquired and liabilities assumed are recorded at their estimated fair values. The excess cost over fair value of net assets acquired is recorded as goodwill. As the consideration paid for Sovereign exceeded the provisional value of the net assets acquired, goodwill of $ 111,301 was recorded related to the acquisition. This goodwill resulted from the combination of expected operational synergies and increased market share in the Dallas-Fort Worth metroplex and Houston metropolitan area. Goodwill is not tax deductible. Fair Value The following table presents the amounts recorded on the condensed consolidated balance sheets on the acquisition date of August 1, 2017, showing the estimated fair value as reported at December 31, 2017, the measurement period adjustments and the fair value determined to be final as of March 31, 2018. Estimate at December 31, 2017 Measurement Period Adjustments Final Fair Value Assets Cash and cash equivalents $ 44,775 $ — $ 44,775 Investment securities 166,307 — 166,307 Loans 752,450 (4,622 ) 747,828 Accrued interest receivable 3,102 — 3,102 Bank premises, furniture and equipment 17,805 474 18,279 Non-marketable equity securities 6,751 — 6,751 Other real estate owned 282 — 282 Intangible assets 8,454 749 9,203 Goodwill 109,091 2,210 111,301 Other assets 13,148 1,189 14,337 Total Assets $ 1,122,165 $ — $ 1,122,165 Liabilities Deposits $ 809,366 $ — $ 809,366 Accounts payable and accrued expenses 6,284 — 6,284 Accrued interest payable and other liabilities 806 — 806 Advances from Federal Home Loan Bank 80,000 — 80,000 Junior subordinated debentures 8,609 — 8,609 Total liabilities $ 905,065 $ — $ 905,065 Preferred stock - series D 24,500 — 24,500 Total stockholders’ equity 24,500 — 24,500 Consideration Market value of common stock issued $ 136,385 $ — $ 136,385 Cash paid 56,215 — 56,215 Total fair value of consideration $ 192,600 $ — $ 192,600 Acquisition-related Expenses For the three and six months ended June 30, 2018 , the Company incurred no pre-tax merger and acquisition expenses related to the Sovereign acquisition. For the same periods in 2017, the company incurred $41 and $130 , respectively, of pre-tax merger and acquisition expenses related to the Sovereign acquisition. Acquisition expenses are included in professional fees in the condensed consolidated statements of income. Acquired Loans and Purchased Credit Impaired Loans Acquired loans were recorded at fair value based on a discounted cash flow valuation methodology that considers, among other things, projected default rates, loss given defaults and recovery rates. No allowance for credit losses was carried over from Sovereign. The Company has identified certain acquired loans as PCI. PCI loan identification considers payment history and past due status, debt service coverage, loan grading, collateral values and other factors that may indicate deterioration of credit quality since origination. The following table discloses the fair value and contractual value of loans acquired from Sovereign on August 1, 2017: PCI loans Other Acquired Loans Total Acquired Loans Real Estate $ 17,708 $ 518,261 $ 535,969 Commercial 29,877 180,730 210,607 Consumer — 1,252 1,252 Total fair value 47,585 700,243 747,828 Contractual principal balance $ 67,985 $ 707,071 $ 775,056 The following table presents additional information about PCI loans acquired from Sovereign on August 1, 2017: PCI Loans Contractually required principal and interest $ 85,125 Non-accretable difference 33,064 Cash flows expected to be collected $ 52,061 Accretable difference 4,476 Fair value of PCI loans $ 47,585 Intangible Assets The following table discloses the fair value of intangible assets acquired from Sovereign on August 1, 2017: Gross Intangible Assets Core deposit intangibles (1) $ 8,452 Servicing asset (2) 317 Intangible lease assets (3) 434 $ 9,203 (1) The Company estimated a useful life of 7.7 years for core deposit intangibles. (2) The Company estimated a weighted-average useful life of 6.1 years for servicing asset which will be amortized on a straight line basis. (3) The Company estimated a weighted-average useful life of 5.0 years for intangible lease assets which will be amortized on a straight line basis Advances from Federal Home Loan Bank The Company assumed from Sovereign $80,000 in advances from the Federal Home Loan Bank as of August 1, 2017 that matured in full from August 1, 2017 to December 31, 2017. Redemption of Veritex Series D Preferred Stock On August 8, 2017, the Company redeemed all 24,500 shares of the Veritex Series D Preferred Stock at its liquidation value of $1,000 per share plus accrued dividends for a total redemption amount of $ 24,727 . The Company assumed $ 185 of accrued dividends in connection with the acquisition of Sovereign on August 1, 2017 out of the $ 227 in dividends paid in 2017. The redemption was approved by the Company’s primary federal regulator and was funded with the Company’s surplus capital. The redemption terminates the Company’s participation in the Small Business Lend Fund (“SBLF”) program. Liberty Bancshares, Inc. On December 1, 2017, the Company acquired Liberty, a Texas corporation and parent company of Liberty Bank. The Company issued 1,449,944 shares of its common stock and paid out $25,009 in cash to Liberty in consideration for the acquisition. The business combination was accounted for under the acquisition method of accounting. As the consideration paid for Liberty exceeded the provisional value of the net assets acquired, goodwill of $ 23,281 was recorded related to the acquisition. This goodwill resulted from the combination of expected operational synergies and increased market share in Tarrant County. Goodwill is not tax deductible. Fair Value The following table presents the amounts recorded on the condensed consolidated balance sheets on the acquisition date of December 1, 2017, showing the estimated fair value as reported at December 31, 2017, the measurement period adjustments and the revised final fair value. Estimate at December 31, 2017 Measurement Period Adjustments Final Fair Value Assets Cash and cash equivalents $ 57,384 $ — $ 57,384 Investment securities 54,137 — 54,137 Loans 312,608 572 313,180 Accrued interest receivable 1,191 — 1,191 Bank premises, furniture and equipment 6,145 688 6,833 Non-marketable equity securities 2,096 — 2,096 Other real estate owned 166 — 166 Intangible assets 7,519 (1,705 ) 5,814 Goodwill 23,496 (215 ) 23,281 Other assets 2,509 617 3,126 Total assets $ 467,251 $ (43 ) $ 467,208 Liabilities Deposits $ 395,851 $ (303 ) $ 395,548 Accounts payable and accrued expenses 1,287 260 1,547 Accrued interest payable and other liabilities 142 — 142 Subordinated notes (1) 4,625 — 4,625 Total liabilities $ 401,905 $ (43 ) $ 401,862 Consideration Market value of common stock issued $ 40,337 $ — $ 40,337 Cash paid 25,009 — 25,009 Total fair value of consideration $ 65,346 $ — $ 65,346 (1) The subordinated note was paid off in full on December 1, 2017, subsequent to closing. Acquisition-related Expenses For the three and six months ended June 30, 2018 , the Company incurred $ 0 and $335 of pre-tax merger and acquisition expenses related to the Liberty acquisition. The Company incurred no acquisition expenses related to the Liberty acquisition for the three and six months ended June 30, 2017. Acquisition expenses are included in professional fees in the consolidated statements of income. Acquired Loans and Purchased Credit Impaired Loans Acquired loans were recorded at fair value based on a discounted cash flow valuation methodology that considers, among other things, projected default rates, loss given defaults and recovery rates. No allowance for credit losses was carried over from Liberty. The Company has identified certain acquired loans as PCI. PCI loan identification considers payment history and past due status, debt service coverage, loan grading, collateral values and other factors that may indicate deterioration of credit quality since origination. Accretion of purchase discounts on PCI loans is based on estimated future cash flows, regardless of contractual maturities, that include undiscounted expected principal and interest payments and use credit risk, interest rate and prepayment risk models to incorporate management’s best estimate of current key assumptions such as default rates, loss severity and payment speeds. Accretion of purchase discounts on acquired non-impaired loans will be recognized on a level-yield basis based on contractual maturity of individual loans per ASC 310-20. The following table discloses the fair value and contractual value of loans acquired from Liberty on December 1, 2017: PCI loans Other acquired loans Total Acquired Loans Real Estate $ 868 $ 257,578 $ 258,446 Commercial 307 49,695 50,002 Consumer — 4,732 4,732 Total fair value 1,175 312,005 313,180 Contractual principal balance $ 1,748 $ 316,119 $ 317,867 The following table presents additional information about PCI loans acquired from Liberty on December 1, 2017: PCI Loans Contractually required principal and interest $ 2,316 Non-accretable difference 711 Cash flows expected to be collected $ 1,605 Accretable difference 430 Fair value of PCI loans $ 1,175 Intangible Assets The acquisition also resulted in a core deposit intangible of $ 5,814 , which will be amortized on an accelerated basis over the estimated life of 10.0 years.

Intangible Assets and Goodwill

Intangible Assets and Goodwill	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	Intangible Assets and Goodwill Intangible assets in the accompanying condensed consolidated balance sheets are summarized as follows: As of June 30, 2018 Weighted Gross Net Amortization Intangible Accumulated Intangible Period Assets Amortization Assets Core deposit intangibles 8.3 years $ 16,051 $ 3,513 $ 12,538 Servicing asset 6.8 years 1,798 615 1,183 Intangible lease assets 2.9 years 5,281 1,520 — 3,761 $ 23,130 $ 5,648 $ 17,482 As of December 31, 2017 Weighted Gross Net Amortization Intangible Accumulated Intangible Period Assets Amortization Assets Core deposit intangibles 8.7 years $ 17,007 $ 2,694 $ 14,313 Servicing asset 6.8 years 1,621 406 1,215 Intangible lease assets 3.3 years 5,281 368 4,913 $ 23,909 $ 3,468 $ 20,441 For the six months ended June 30, 2018 and June 30, 2017 , amortization expense related to intangible assets of approximately $2,180 and $190 , respectively, is included within amortization of intangibles, occupancy and equipment, and other income within the condensed consolidated statements of income. Changes in the carrying amount of goodwill are summarized as follows for the six months ended June 30, 2018 : June 30, 2018 Beginning of period $ 159,452 Effect of Sovereign acquisition 2,210 Effect of Liberty acquisition (215 ) End of period $ 161,447

Branch Assets and Liabilities H

Branch Assets and Liabilities Held For Sale	6 Months Ended
	Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Branch Assets and Liabilities Held For Sale	Branch Assets and Liabilities Held for Sale On October 23, 2017, the Company entered into a Purchase and Assumption Agreement to sell certain assets and liabilities associated with two branch locations in the Austin metropolitan market. On January 1, 2018, the Company completed the sale of these assets and liabilities to Horizon Bank, SSB (the “buyer”), resulting in a $33,557 cash settlement payment to the buyer during the three months ended March 31, 2018, which included the repayment of a $1,000 deposit liability recorded within other liabilities as of December 31, 2017, and the recognition of a $355 gain on the sale reported in other non-interest income for the six months ended June 30, 2018. The associated assets and liabilities are included in branch assets and liabilities held for sale as of December 31, 2017. The completion of this sale resulted in the Company exiting the Austin metropolitan market. In the fourth quarter of 2017, the Company ceased using one of its Dallas, Texas branch buildings. The Company currently expects to complete a sale of the building in the third quarter of 2018. The associated building and improvements are included in branch assets held for sale as of June 30, 2018 and December 31, 2017 . The following table presents the assets and liabilities held for sale as of June 30, 2018 and December 31, 2017 : June 30, 2018 December 31, 2017 Assets Cash and cash equivalents $ — $ 334 Loans — 26,313 Accrued interest receivable — 63 Bank premises, furniture and equipment 1,753 5,118 Intangible assets — 1,724 Total assets $ 1,753 $ 33,552 Liabilities Deposits $ — $ 64,282 Accounts payable and accrued expenses — 2 Deferred tax liability — 327 Accrued interest payable and other liabilities — 16 Total liabilities $ — $ 64,627

Subsequent Events (Notes)

Subsequent Events (Notes)	6 Months Ended
	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 23, 2018, the Company entered into a definitive agreement with Green Bancorp, Inc. (“Green”), the parent holding company for Green Bank, N.A. (“Green Bank”), in an all-stock merger valued at approximately $1,000,000 . The agreement provides for the merger of Green and Green Bank with and into Veritex and Veritex Community Bank, respectively. Each share of Green common stock will be converted into the right to receive 0.79 shares of Veritex common stock upon closing. The closing of this transaction is subject to approval by the Company’s and Green’s shareholders, regulatory approvals and other customary closing conditions and is expected to occur in the first quarter of 2019.

Summary of Significant Accoun24

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of Veritex and the Bank as its wholly-owned subsidiary. The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”), but do not include all of the information and footnotes required for complete financial statements. Intercompany transactions and balances are eliminated in consolidation. In management’s opinion, these interim unaudited condensed consolidated financial statements include all adjustments of a normal recurring nature necessary for a fair statement of the Company’s condensed consolidated financial position at June 30, 2018 and December 31, 2017 , condensed consolidated results of operations for the three and six months ended June 30, 2018 and 2017 , condensed consolidated stockholders’ equity for the six months ended June 30, 2018 and 2017 and condensed consolidated cash flows for the six months ended June 30, 2018 and 2017 . Accounting measurements at interim dates inherently involve greater reliance on estimates than at year end and the results for the interim periods shown herein are not necessarily indicative of results to be expected for the full year due in part to global economic and financial market conditions, interest rates, access to sources of liquidity, market competition and interruptions of business processes. These interim unaudited condensed consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements and notes thereto for the year ended December 31, 2017 included within the Company’s Form 10-K as filed with the Securities and Exchange Commission on March 14, 2018. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. These estimates and assumptions may also affect disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from these estimates.
Segment Reporting	Segment Reporting The Company has one reportable segment. All of the Company’s activities are interrelated, and each activity is dependent and assessed based on how each of the activities of the Company supports the others. For example, lending is dependent upon the ability of the Company to fund itself with deposits and borrowings while managing the interest rate and credit risk. Accordingly, all significant operating decisions are based upon analysis of the Bank as one segment or unit. The Company’s chief operating decision-maker, the Chief Executive Officer, uses the consolidated results to make operating and strategic decisions.
Reclassifications	Reclassifications Some items in the prior year financial statements were reclassified to conform to the current presentation.
Revenue From Contracts With Customers	Revenue from Contracts with Customers The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods. The Company’s primary sources of revenue are derived from interest income on financial assets that are not within the scope of Topic 606. The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Condensed Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is little judgment involved in applying Topic 606 that significantly affects the determination of the amount and timing of revenue from contracts with customers.
Earnings Per Share	Earnings Per Share Earnings per share (“EPS”) are based upon the weighted-average shares outstanding.
Adoption of New Accounting Standards and Recent Accounting Pronouncements	Adoption of New Accounting Standards In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2014-09, “Revenue from Contracts with Customers” (“ASU 2014-09”), which requires an entity to 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. The ASU replaces most existing revenue recognition guidance in GAAP. The new standard was effective for the Company on January 1, 2018. Adoption of ASU 2014-09 did not have a material impact on the Company’s condensed consolidated financial statements and related disclosures as the Company’s primary sources of revenues are derived from interest income on financial assets that are not within the scope of ASU 2014-09. The Company’s revenue recognition pattern for revenue streams within the scope of ASU 2014-09, including but not limited to service charges on deposit accounts, did not change significantly from current practice. The standard permits the use of either the full retrospective or modified retrospective transition method. The Company elected to use the modified retrospective transition method which requires application of ASU 2014-09 to uncompleted contracts at the date of adoption. However, periods prior to the date of adoption will not be retrospectively revised as the impact of the ASU on uncompleted contracts at the date of adoption was not material. In January 2016, the FASB issued ASU No. 2016-01, “Financial Instruments – Overall: Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”) which amends certain aspects of recognition, measurement, presentation, and disclosure of financial instruments. ASU 2016-01, among other things, (i) requires equity investments, with certain exceptions, to be measured at fair value with changes in fair value recognized in net income, (ii) simplifies the impairment assessment of equity investments without readily determinable fair values by requiring a qualitative assessment to identify impairment, (iii) eliminates the requirement for public business entities to disclose the methods and significant assumptions used to estimate the fair value that is required to be disclosed for financial instruments measured at amortized cost on the balance sheet, (iv) requires public business entities to use the exit price notion when measuring the fair value of financial instruments for disclosure purposes, (v) requires an entity to present separately in other comprehensive income the portion of the total change in the fair value of a liability resulting from a change in the instrument-specific credit risk when the entity has elected to measure the liability at fair value in accordance with the fair value option for financial instruments, (vi) requires separate presentation of financial assets and financial liabilities by measurement category and form of financial asset on the balance sheet or the accompanying notes to the financial statements and (vii) clarifies that an entity should evaluate the need for a valuation allowance on a deferred tax asset related to available-for-sale. The adoption of ASU 2016-01 on January 1, 2018 did not have a material impact on the Company’s condensed consolidated financial statements. In accordance with (iv) above, the Company measured the fair value of its loan portfolio prospectively using an exit price notion. See Note 7 – Fair Value Disclosures for further information regarding the valuation of these loans. Recent Accounting Pronouncements ASU 2017-04 “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment” (“ASU 2017-04”) eliminates Step 2 from the goodwill impairment test. In addition, the amendment eliminates the requirements for any reporting unit with a zero or negative carrying amount to perform a qualitative assessment and, if it fails that qualitative test, to perform Step 2 of the goodwill impairment test. For public companies, ASU 2017-04 is effective for fiscal years beginning after December 15, 2019 with early adoption permitted for interim or annual goodwill impairment tests performed on testing dates after January 1, 2017. The Company is in process of evaluating the impact of this pronouncement, which is not expected to have a significant impact on the consolidated financial statements. ASU 2016-13 “Financial Instruments —Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” (“ASU 2016-13”) amends guidance on reporting credit losses for assets held at amortized cost basis and available for sale debt securities. For assets held at amortized cost basis, Topic 326 eliminates the probable initial recognition threshold in current GAAP and, instead, requires an entity to reflect its current estimate of all expected credit losses. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial assets to present the net amount expected to be collected. For available for sale debt securities, credit losses should be measured in a manner similar to current GAAP, however Topic 326 will require that credit losses be presented as an allowance rather than as a write-down. ASU 2016-13 affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities, ASU 2016-13 is effective for financial statements issued for fiscal years beginning after December 15, 2019, and interim periods therein. The Company is continuing to evaluate the impact of the adoption of ASU 2016-13 and is uncertain of the impact on the consolidated financial statements at this point in time. ASU 2016-02 “Leases (Topic 842)” (“ASU 2016-02”) is intended to improve the reporting of leasing transactions to provide users of financial statements with more decision-useful information. ASU 2016-02 will require organizations that lease assets to recognize on the balance sheet the assets and liabilities for the rights and obligations created by those leases. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company leases certain properties and equipment under operating leases that will result in the recognition of lease assets and lease liabilities on the Company’s balance sheet under ASU 2016-02, however, the majority of the Company’s properties and equipment are owned, not leased. We expect recorded assets and liabilities to increase upon adoption of the standard as it relates to operating leases in which we are the lessee. Revenue from Contracts with Customers The Company records revenue from contracts with customers in accordance with Accounting Standards Codification Topic 606, “Revenue from Contracts with Customers” (“Topic 606”). Under Topic 606, the Company must identify the contract with a customer, identify the performance obligations in the contract, determine the transaction price, allocate the transaction price to the performance obligations in the contract, and recognize revenue when (or as) the Company satisfies a performance obligation. Significant revenue has not been recognized in the current reporting period that results from performance obligations satisfied in previous periods. The Company’s primary sources of revenue are derived from interest income on financial assets that are not within the scope of Topic 606. The Company has evaluated the nature of its contracts with customers and determined that further disaggregation of revenue from contracts with customers into more granular categories beyond what is presented in the Condensed Consolidated Statements of Income was not necessary. The Company generally fully satisfies its performance obligations on its contracts with customers as services are rendered and the transaction prices are typically fixed; charged either on a periodic basis or based on activity. Because performance obligations are satisfied as services are rendered and the transaction prices are fixed, there is little judgment involved in applying Topic 606 that significantly affects the determination of the amount and timing of revenue from contracts with customers.

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2018
Accounting Policies [Abstract]
Schedule of Reconciliation Between Weighted Average Shares Used for Calculating Basic and Diluted EPS	The table below sets forth the reconciliation between weighted average shares used for calculating basic and diluted EPS for the three and six months ended June 30, 2018 and 2017 : Three Months Ended June 30, Six Months Ended June 30, 2018 2017 2018 2017 Earnings (numerator) Net income $ 10,193 $ 3,615 $ 20,581 $ 6,713 Shares (denominator) in thousands Weighted average shares outstanding for basic EPS 24,148 15,211 24,139 15,205 Dilutive effect of employee stock-based awards 398 426 388 428 Adjusted weighted average shares outstanding 24,546 15,637 24,527 15,633 Earnings per share: Basic $ 0.42 $ 0.24 $ 0.85 $ 0.44 Diluted $ 0.42 $ 0.23 $ 0.84 $ 0.43

Supplemental Statement of Cas26

Supplemental Statement of Cash Flows (Tables)	6 Months Ended
	Jun. 30, 2018
Supplemental Cash Flow Elements [Abstract]
Schedule of Other Supplemental Cash Flow Information	Other supplemental cash flow information is presented below: Six Months Ended June 30, 2018 2017 Supplemental Disclosures of Cash Flow Information: Cash paid for interest $ 11,962 $ 3,745 Cash paid for income taxes 5,100 3,500 Supplemental Disclosures of Non-Cash Flow Information: Net foreclosure of other real estate owned and repossessed assets $ 8 $ — Non-cash assets acquired (1) Loans $ (4,050 ) $ — Bank premises, furniture and equipment 1,162 — Intangible assets (956 ) — Goodwill 1,995 — Other assets 1,806 — Non-cash liabilities assumed (1) Deposits $ 303 $ — Accrued interest payable and other liabilities (260 ) — (1) Represents adjustments to provisional estimates recorded for acquisitions of Sovereign Bancshares, Inc. and Liberty Bancshares, Inc.. Refer to Note 12. Business Combinations for further discussion.

Investment Securities (Tables)

Investment Securities (Tables)	6 Months Ended
	Jun. 30, 2018
Investments, Debt and Equity Securities [Abstract]
Schedule of Carrying Amount and Approximate Fair Values of Available-for-Sale Securities	The amortized cost, related gross unrealized gains and losses recognized in accumulated other comprehensive loss, and the fair value of securities are as follows: June 30, 2018 Amortized Gross Gross Fair Value Available for Sale U.S. government agencies $ 10,365 $ — $ 221 $ 10,144 Corporate bonds 20,842 61 48 20,855 Municipal securities 43,792 37 391 43,438 Mortgage-backed securities 92,998 11 2,746 90,263 Collateralized mortgage obligations 88,781 18 1,872 86,927 Asset-backed securities 557 3 — 560 $ 257,335 $ 130 $ 5,278 $ 252,187 December 31, 2017 Amortized Gross Gross Fair Value Available for Sale U.S. government agencies $ 10,829 $ 9 $ 18 $ 10,820 Corporate bonds 17,500 330 — 17,830 Municipal securities 55,499 189 211 55,477 Mortgage-backed securities 91,734 58 1,068 90,724 Collateralized mortgage obligations 53,559 9 925 52,643 Asset-backed securities 616 7 — 623 $ 229,737 $ 602 $ 2,222 $ 228,117
Schedule of Investment Securities That Have Been in a Continuous Unrealized Loss Position	The following tables disclose the Company’s investment securities that have been in a continuous unrealized loss position for less than 12 months and those that have been in a continuous unrealized loss position for 12 or more months: June 30, 2018 Less Than 12 Months 12 Months or More Totals Fair Unrealized Fair Unrealized Fair Unrealized Available for Sale U.S. government agencies $ 9,572 $ 199 $ 572 $ 22 $ 10,144 $ 221 Corporate bonds 3,795 48 — — 3,795 48 Municipal securities 24,582 220 5,395 171 29,977 391 Mortgage-backed securities 62,519 1,726 25,934 1,020 88,453 2,746 Collateralized mortgage obligations 42,031 874 23,231 998 65,262 1,872 $ 142,499 $ 3,067 $ 55,132 $ 2,211 $ 197,631 $ 5,278 December 31, 2017 Less Than 12 Months 12 Months or More Totals Fair Unrealized Fair Unrealized Fair Unrealized Value Loss Value Loss Value Loss Available for Sale U.S. government agencies $ 3,470 $ 4 $ 629 $ 14 $ 4,099 $ 18 Municipal securities 14,593 79 7,092 132 21,685 211 Mortgage-backed securities 52,075 513 29,485 555 81,560 1,068 Collateralized mortgage obligations 31,581 395 20,305 530 51,886 925 $ 101,719 $ 991 $ 57,511 $ 1,231 $ 159,230 $ 2,222
Schedule of Amortized Costs and Estimated Fair Values of Securities Available for Sale, By Contractual Maturity	The amortized costs and estimated fair values of securities available for sale, by contractual maturity, as of the dates indicated, are shown in the table below. Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayments penalties. Mortgage-backed securities, collateralized mortgage obligations, and asset-backed securities typically are issued with stated principal amounts, and the securities are backed by pools of mortgage loans and other loans that have varying maturities. The term of mortgage-backed, collateralized mortgage obligations and asset-backed securities thus approximates the term of the underlying mortgages and loans and can vary significantly due to prepayments. Therefore, these securities are not included in the maturity categories below. June 30, 2018 Available For Sale Amortized Fair Due in one year or less $ 2,135 $ 2,139 Due from one year to five years 33,878 33,677 Due from five years to ten years 22,924 22,753 Due after ten years 16,062 15,868 74,999 74,437 Mortgage-backed securities 92,998 90,263 Collateralized mortgage obligations 88,781 86,927 Asset-backed securities 557 560 $ 257,335 $ 252,187 December 31, 2017 Available For Sale Amortized Fair Due in one year or less $ 2,328 $ 2,330 Due from one year to five years 29,654 29,991 Due from five years to ten years 34,480 34,474 Due after ten years 17,366 17,332 83,828 84,127 Mortgage-backed securities 91,734 90,724 Collateralized mortgage obligations 53,559 52,643 Asset-backed securities 616 623 $ 229,737 $ 228,117
Schedule of Proceeds From Sales of Investment Securities Available for Sale and Gross Gains and Losses	Proceeds from sales of investment securities available for sale and gross gains and losses for the six months ended June 30, 2018 and 2017 were as follows: Six Months Ended June 30, 2018 2017 Proceeds from sales $ 30,961 $ — Gross realized gains 335 — Gross realized losses 323 —

Loans and Allowance for Loan 28

Loans and Allowance for Loan Losses (Tables)	6 Months Ended
	Jun. 30, 2018
Receivables [Abstract]
Summary of Loans in the Accompanying Consolidated Balance Sheets	Loans in the accompanying condensed consolidated balance sheets are summarized as follows: June 30, December 31, Real estate: Construction and land $ 300,262 $ 277,825 Farmland 10,815 9,385 1 - 4 family residential 283,486 236,542 Multi-family residential 109,621 106,275 Commercial Real Estate 1,015,463 909,292 Commercial 691,718 684,551 Consumer 7,543 9,648 2,418,908 2,233,518 Deferred loan fees (22 ) (28 ) Allowance for loan losses (14,842 ) (12,808 ) $ 2,404,044 $ 2,220,682 The outstanding balance represents the total amount owed, including accrued but unpaid interest, and any amounts previously charged off. June 30, 2018 December 31, 2017 Carrying amount $ 41,552 $ 47,612 Outstanding balance 53,330 63,940 Changes in the accretable yield for PCI loans for the three and six months ended June 30, 2018 are included in table below. There was no accretable yield balance for PCI loans for the three or six months ended June 30, 2017. Three Months Ended June 30, 2018 Six Months Ended June 30, 2018 Balance at beginning of period $ 8,139 $ 2,723 Purchase accounting adjustments 45 1,459 Reclassifications from nonaccretable 351 6,221 Accretion (1,200 ) (3,068 ) Balance at end of period $ 7,335 $ 7,335
Schedule of Non-Accrual Loans	Non-accrual loans aggregated by class of loans, as of June 30, 2018 and December 31, 2017 , are as follows: Non-Accrual Loans (1) June 30, December 31, Real estate: Construction and land $ 2,136 $ — Farmland — — 1 - 4 family residential — — Multi-family residential — — Commercial Real Estate 54 61 Commercial 2,058 398 Consumer 4 6 $ 4,252 $ 465 (1 ) Excludes PCI loans. PCI loans are generally reported as accrual loans unless significant concerns exist related to the predictability of the timing and amount of future cash flows.
Schedule of Age Analysis of Past Due Loans, Aggregated by Class of Loans	An age analysis of past due loans, aggregated by class of loans, as of June 30, 2018 and December 31, 2017 is as follows: June 30, 2018 30 to 59 Days 60 to 89 Days 90 Days or Greater Total Past Due Total Current (1) Total Total 90 Days Past Due and Still Accruing (2) Real estate: Construction and land $ 46 $ 356 $ — $ 402 $ 299,860 $ 300,262 $ — Farmland — — — — 10,815 10,815 — 1 - 4 family residential 1,571 101 — 1,672 281,814 283,486 — Multi-family residential — — — — 109,621 109,621 — Commercial Real Estate 1,443 — — 1,443 1,014,020 1,015,463 — Commercial 5,951 280 2,169 8,400 683,318 691,718 613 Consumer 122 8 — 130 7,413 7,543 — $ 9,133 $ 745 $ 2,169 $ 12,047 $ 2,406,861 $ 2,418,908 $ 613 (1) Includes all PCI loans. (2) There were no PCI loans 90 days past due and still accruing as of June 30, 2018 . No PCI loans were considered non-performing loans as of June 30, 2018 . December 31, 2017 30 to 59 Days 60 to 89 Days 90 Days or Greater Total Past Due Total Current (1)(3) Total Total 90 Days Past Due and Still Accruing (2) Real estate: Construction and land $ 320 $ — $ — $ 320 $ 277,505 $ 277,825 $ — Farmland 104 — — 104 9,281 9,385 — 1 - 4 family residential 1,274 139 — 1,413 235,129 236,542 — Multi-family residential — — — — 106,275 106,275 — Commercial Real Estate 1,830 — — 1,830 907,462 909,292 — Commercial 1,849 389 389 2,627 681,924 684,551 — Consumer 39 51 18 108 9,540 9,648 18 $ 5,416 $ 579 $ 407 $ 6,402 $ 2,227,116 $ 2,233,518 $ 18 (1) Includes all PCI loans. (2) Loans 90 days past due and still accruing excludes $3,300 of PCI loans as of December 31, 2017 . No PCI loans were considered non-performing loans as of December 31, 2017 . (3) To conform to the current period presentation, $15,123 was reclassified from 1-4 family residential to multi-family residential within the total current column.
Summary of Impaired Loans, Including Purchased Credit Impaired Loans and TDRs	Impaired loans and TDRs, at June 30, 2018 and December 31, 2017 , are summarized in the following tables. June 30, 2018 (1) Unpaid Recorded Recorded Total Related Average Real estate: Construction and land $ 2,136 $ 2,136 $ — $ 2,136 $ — $ 2,298 Farmland — — — — — — 1 - 4 family residential 160 160 — 160 — 161 Multi-family residential — — — — — — Commercial Real Estate 368 368 — 368 — 371 Commercial 2,128 2,081 258 2,339 65 2,226 Consumer 69 69 — 69 — 76 Total $ 4,861 $ 4,814 $ 258 $ 5,072 $ 65 $ 5,132 (1) Loans reported exclude PCI loans. December 31, 2017 (1) Unpaid Recorded Recorded Total Related Average Real estate: Construction and land $ — $ — $ — $ — $ — $ — Farmland — — — — — — 1 - 4 family residential 161 161 — 161 — 163 Multi-family residential — — — — — — Commercial Real Estate 434 434 — 434 — 445 Commercial 398 282 116 398 12 499 Consumer 75 75 — 75 — 87 Total $ 1,068 $ 952 $ 116 $ 1,068 $ 12 $ 1,194 (1) Loans reported exclude PCI loans.
Summary of Internal Ratings of Loans, Including Purchased Credit Impaired Loans	The following tables summarize the Company’s internal ratings of its loans, including PCI loans, as of June 30, 2018 and December 31, 2017 : June 30, 2018 Pass Special Substandard Doubtful PCI Total Real estate: Construction and land $ 297,819 $ 307 $ 2,136 $ — $ — $ 300,262 Farmland 10,783 — — — 32 10,815 1 - 4 family residential 282,767 309 318 — 92 283,486 Multi-family residential 109,621 — — — — 109,621 Commercial Real Estate 985,302 10,251 2,890 — 17,020 1,015,463 Commercial 651,912 7,280 8,118 — 24,408 691,718 Consumer 7,453 — 90 — — 7,543 Total $ 2,345,657 $ 18,147 $ 13,552 $ — $ 41,552 $ 2,418,908 December 31, 2017 Pass (1) Special Mention Substandard Doubtful PCI Total Real estate: Construction and land $ 277,186 $ 639 $ — $ — $ — $ 277,825 Farmland 9,336 — — — 49 9,385 1 - 4 family residential 235,781 462 200 — 99 236,542 Multi-family residential 106,275 — — — — 106,275 Commercial Real Estate 882,523 8,771 681 — 17,317 909,292 Commercial 634,796 18,337 1,155 116 30,147 684,551 Consumer 9,540 — 108 — — 9,648 Total $ 2,155,437 $ 28,209 $ 2,144 $ 116 $ 47,612 $ 2,233,518 (1) To conform to the current period presentation, $15,123 was reclassified from 1-4 family residential to multi-family residential within the pass column. There were no reclassifications between internal rating buckets.
Schedule of Analysis of the Allowance for Loan Losses	An analysis of the allowance for loan losses for the six months ended June 30, 2018 and 2017 and year ended December 31, 2017 is as follows: Six Months Ended June 30, 2018 Year Ended December 31, 2017 Six Months Ended June 30, 2017 Balance at beginning of period $ 12,808 $ 8,524 $ 8,524 Provision charged to earnings 2,182 5,114 1,833 Charge-offs (171 ) (839 ) (622 ) Recoveries 23 9 5 Net charge-offs (148 ) (830 ) (617 ) Balance at end of period $ 14,842 $ 12,808 $ 9,740
Summary of Activity in the Allowance for Loan Losses by Class of Loans	The following tables summarize the activity in the allowance for loan losses by portfolio segment for the periods indicated. At June 30, 2018 , the allowance for loan losses related to PCI loans totaled $333 which is included in the specific reserves amount in the table below. There were no allowance for loan losses related to PCI loans at December 31, 2017 and June 30, 2017 . For the Six Months Ended June 30, 2018 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Balance at beginning of period $ 1,315 $ 1,473 $ 4,410 $ 5,588 $ 22 $ 12,808 Provision (recapture) charged to earnings 275 172 1,189 525 21 2,182 Charge-offs — — — (150 ) (21 ) (171 ) Recoveries — — — 23 — 23 Net charge-offs — — — (127 ) (21 ) (148 ) Balance at end of period $ 1,590 $ 1,645 $ 5,599 $ 5,986 $ 22 $ 14,842 Period-end amount allocated to: Specific reserves: — — — 398 — 398 General reserves 1,590 1,645 5,599 5,588 22 14,444 Total $ 1,590 $ 1,645 $ 5,599 $ 5,986 $ 22 $ 14,842 For the Year Ended December 31, 2017 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Balance at beginning of period $ 1,415 $ 1,116 $ 3,003 $ 2,955 $ 35 $ 8,524 Provision (recapture) charged to earnings (100 ) 368 1,407 3,452 (13 ) 5,114 Charge-offs — (11 ) — (828 ) — (839 ) Recoveries — — — 9 — 9 Net charge-offs — (11 ) — (819 ) — (830 ) Balance at end of period $ 1,315 $ 1,473 $ 4,410 $ 5,588 $ 22 $ 12,808 Period-end amount allocated to: Specific reserves: — — — 12 — 12 General reserves 1,315 1,473 4,410 5,576 22 12,796 Total $ 1,315 $ 1,473 $ 4,410 $ 5,588 $ 22 $ 12,808 For the Six Months Ended June 30, 2017 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Balance at beginning of year $ 1,415 $ 1,116 $ 3,003 $ 2,955 $ 35 $ 8,524 Provision (recapture) charged to earnings (291 ) 370 554 1,205 (5 ) 1,833 Charge-offs — (11 ) — (611 ) — (622 ) Recoveries — — — 5 — 5 Net charge-offs (recoveries) — (11 ) — (606 ) — (617 ) Balance at end of period $ 1,124 $ 1,475 $ 3,557 $ 3,554 $ 30 $ 9,740 Period-end amount allocated to: Specific reserves: — — — 137 1 138 General reserves 1,124 1,475 3,557 3,417 29 9,602 Total $ 1,124 $ 1,475 $ 3,557 $ 3,554 $ 30 $ 9,740
Schedule of Recorded Investment in Loans Related to the Balance in the Allowance for Loan Losses on the Basis of the Company's Impairment Methodology	The Company’s recorded investment in loans as of June 30, 2018 and December 31, 2017 related to the balance in the allowance for loan losses on the basis of the Company’s impairment methodology is as follows: June 30, 2018 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Loans individually evaluated for impairment $ 2,136 $ 160 $ 368 $ 2,128 $ 69 $ 4,861 Loans collectively evaluated for impairment 308,909 392,855 998,075 665,182 7,474 2,372,495 PCI loans 32 92 17,020 24,408 — 41,552 Total $ 311,077 $ 393,107 $ 1,015,463 $ 691,718 $ 7,543 $ 2,418,908 December 31, 2017 Real Estate Construction, Residential Commercial Real Estate Commercial Consumer Total Loans individually evaluated for impairment $ — $ 161 $ 434 $ 398 $ 75 $ 1,068 Loans collectively evaluated for impairment 287,161 342,557 891,541 654,006 9,573 2,184,838 PCI loans 49 99 17,317 30,147 — 47,612 Total $ 287,210 $ 342,817 $ 909,292 $ 684,551 $ 9,648 $ 2,233,518
Schedule of Summary of Changes in Servicing Assets	The Company was servicing loans of approximately $74,615 and $44,720 as of June 30, 2018 and 2017, respectively. A summary of the changes in the related servicing assets are as follows: Six Months Ended June 30, 2018 2017 Balance at beginning of period $ 1,215 $ 601 Increase from loan sales 177 281 Amortization charged to income (209 ) (88 ) Balance at end of period $ 1,183 $ 794

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2018
Commitments and Contingencies Disclosure [Abstract]
Rollforward of Cease-use Liability	The below table is a roll-forward of the cease-use liability from December 31, 2017 to June 30, 2018 . Cease-Use Liability Balance at December 31, 2017 $ 1,407 Payments (43 ) Reversal upon lease assignment (669 ) Balance at June 30, 2018 $ 695

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of Assets Measured at Fair Value on a Recurring Basis	The following table summarizes assets measured at fair value on a recurring basis as of June 30, 2018 and December 31, 2017 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Level 1 Level 2 Level 3 Total As of June 30, 2018 Investment securities available for sale $ — $ 252,187 $ — $ 252,187 As of December 31, 2017 Investment securities available for sale $ — $ 228,117 $ — $ 228,117
Schedule of Assets Measured at Fair Value on a Non-Recurring Basis	The following table summarizes assets measured at fair value on a non-recurring basis as of June 30, 2018 and December 31, 2017 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: Fair Value Level 1 Level 2 Level 3 Total As of June 30, 2018 Assets: Impaired loans $ — $ — $ 258 $ 258 As of December 31, 2017 Assets: Impaired loans $ — $ — $ 116 $ 116 Other real estate owned $ — $ — $ 449 $ 449
Schedule of Significant Unobservable Inputs Used in the Fair Value Measurements	For Level 3 financial assets measured at fair value as of June 30, 2018 and December 31, 2017 , the significant unobservable inputs used in the fair value measurements were as follows: June 30, 2018 Valuation Unobservable Weighted Assets/Liabilities Fair Value Technique Input(s) Average Impaired loans $ 258 Collateral Method Adjustments for selling costs 8 % December 31, 2017 Valuation Unobservable Weighted Assets/Liabilities Fair Value Technique Input(s) Average Impaired loans $ 116 Collateral Method Adjustments for selling costs 8 % Other real estate owned $ 449 Collateral Method Adjustments for selling costs 8 %
Schedule of Estimated Fair Values and Carrying Values of All Financial Instruments	The estimated fair values and carrying values of all financial instruments under current authoritative guidance as of June 30, 2018 and December 31, 2017 were as follows: Fair Value Carrying Level 1 Level 2 Level 3 June 30, 2018 Financial assets: Cash and cash equivalents $ 146,740 $ — $ 146,740 $ — Loans held for sale 453 — 453 — Loans, net 2,404,044 — — 2,420,850 Accrued interest receivable 8,137 — 8,137 — Bank-owned life insurance 21,767 — 21,767 — Servicing asset 1,183 — 1,183 — Non-marketable equity securities 27,086 — 27,086 — Financial instruments, assets held for sale 1,753 — 1,753 — Financial liabilities: Deposits $ 2,490,418 $ — $ 2,432,512 $ — Advances from FHLB 108,092 — 108,128 — Accrued interest payable 900 — 900 — Junior subordinated debentures 11,702 — 11,702 — Subordinated notes 4,988 — 4,988 — December 31, 2017 Financial assets: Cash and cash equivalents $ 149,044 $ — $ 149,044 $ — Loans held for sale 841 — 841 — Loans, net 2,220,682 — — 2,234,094 Accrued interest receivable 7,676 — 7,676 — Bank-owned life insurance 21,476 — 21,476 — Servicing asset 1,243 — 1,243 — Non-marketable equity securities 13,732 — 13,732 — Financial instruments, assets held for sale 31,828 5,515 26,313 Financial liabilities: Deposits $ 2,278,630 $ — $ 2,164,498 $ — Advances from FHLB 71,164 — 70,110 — Accrued interest payable 445 — 445 — Junior subordinated debentures 11,702 — 11,702 — Subordinated notes 4,987 — 4,987 — Other borrowings 15,000 — 15,000 — Financial instruments, liabilities held for sale 64,300 — 64,300 —

Financial Instruments with Of31

Financial Instruments with Off-Balance Sheet Risk (Tables)	6 Months Ended
	Jun. 30, 2018
Fair Value Disclosures [Abstract]
Schedule of the Approximate Amounts of Financial Instruments with Off-Balance Sheet Risk	The following table sets forth the approximate amounts of these financial instruments as of June 30, 2018 and December 31, 2017 : June 30, December 31, 2018 2017 Commitments to extend credit $ 707,679 $ 606,451 Standby and commercial letters of credit 6,654 9,299 $ 714,333 $ 615,750

Stock and Incentive Plans (Tabl

Stock and Incentive Plans (Tables)	6 Months Ended
	Jun. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Summary of Option Activity	A summary of option activity under the 2010 Incentive Plan for the six months ended June 30, 2018 and 2017 , and changes during the period then ended is presented below: 2010 Incentive Plan Non-Performance Based Stock Options Shares Underlying Options Weighted Exercise Price Weighted Average Contractual Term Aggregate Intrinsic Value Outstanding at January 1, 2017 325,500 $ 10.15 4.56 years Exercised (15,000 ) 10.00 Outstanding at June 30, 2017 310,500 $ 10.16 4.09 years Options exercisable at June 30, 2017 297,000 $ 10.12 4.00 years Outstanding at January 1, 2018 305,000 $ 10.16 3.59 years $ 5,316 Exercised (11,500 ) 10.48 237 Outstanding at June 30, 2018 293,500 $ 10.15 3.04 years $ 6,139 Options exercisable at June 30, 2018 289,500 $ 10.13 3.00 years $ 6,063 A summary of the status of the Company’s stock options under the 2014 Omnibus Plan as of June 30, 2018 and 2017 , and changes during the six months ended is as follows: 2014 Omnibus Plan Non-performance Based Stock Options Shares Weighted Weighted Aggregate Intrinsic Value Outstanding at January 1, 2017 128,366 $ 15.32 8.69 years Granted 65,440 26.89 Forfeited (3,465 ) 21.24 Exercised (1,544 ) 15.00 Outstanding at June 30, 2017 188,797 $ 19.22 8.63 years Options exercisable at June 30, 2017 51,204 $ 14.96 7.93 years Outstanding at January 1, 2018 332,706 $ 22.71 8.86 years $ 1,614 Granted 125,593 27.95 Exercised (1,983 ) 14.95 32 Outstanding at June 30, 2018 456,316 $ 24.14 8.68 years $ 3,142 Options exercisable at June 30, 2018 106,729 $ 17.41 7.35 years $ 1,457 Weighted average fair value of options granted during the period $ 9.66
Summary of Status of the Company's Restricted Shares or Restricted Stock Units	A summary of the status of the Company’s restricted stock units under the 2010 Incentive Plan as of June 30, 2018 and 2017 , and changes during the six months then ended is as follows: 2010 Incentive Plan Nonperformance-based restricted stock units Units Weighted Average Grant Date Fair Value Outstanding at January 1, 2017 27,750 $ 11.92 Vested into shares (1,000 ) 10.85 Forfeited (500 ) $ 10.85 Outstanding at June 30, 2017 26,250 $ 11.98 Outstanding at January 1, 2018 24,250 $ 13.19 Vested into shares (23,750 ) 12.14 Forfeited (500 ) 10.85 Outstanding at June 30, 2018 — $ — A summary of the status of the Company’s non-performance based restricted stock units under the 2014 Omnibus Plan as of June 30, 2018 and 2017 , and changes during the six months ended is as follows: 2014 Omnibus Plan Non-performance Based Restricted Stock Units Units Weighted Average Grant Date Fair Value Outstanding at January 1, 2017 67,956 $ 13.79 Granted 31,375 27.49 Vested into shares (8,475 ) 25.42 Forfeited (2,250 ) 27.93 Options exercisable at June 30, 2017 88,606 $ 17.17 Outstanding at January 1, 2018 150,722 $ 13.29 Granted 54,650 29.29 Vested into shares (27,711 ) 27.99 Forfeited (3,501 ) 28.35 Outstanding at June 30, 2018 174,160 $ 15.67 A summary of the status of the Company’s performance based restricted stock units under the 2014 Omnibus Plan as of June 30, 2018 and 2017 , and changes during the six months ended is as follows: 2014 Omnibus Plan Performance Based Restricted Stock Units Units Weighted Average Grant Date Fair Value Outstanding at January 1, 2017 51,197 $ 8.72 Granted 25,522 24.34 Vested into shares (19,861 ) 15.34 Forfeited (2,014 ) 15.68 Options exercisable at June 30, 2017 54,844 $ 13.33 Outstanding at January 1, 2018 53,594 $ 8.72 Granted 40,269 27.59 Vested into shares (26,623 ) 18.83 Outstanding at June 30, 2018 67,240 $ 16.01
Schedule of Assumptions Used to Measure Fair Value of Each Option Award Estimated On Grant Date Using Black-Scholes Option-Pricing Model	The fair value of each option award is estimated on the grant date using the Black-Scholes option-pricing model with the following assumptions used for the grants for the six months ended June 30, 2018 and 2017 : Six Months Ended June 30, 2018 2018 2017 Dividend yield 0.00% 0.00% Expected life 6.5 to 7.5 years 5.0 to 7.5 years Expected volatility 27.87% to 30.36% 32.10% to 37.55% Risk-free interest rate 2.30% to 2.94% 1.06% to 2.32%
Schedule of Share-based Compensation, Employee Stock Purchase Plan, Activity	A summary of the fair value of the Company’s stock options exercised and restricted stock units vested under the 2014 Omnibus Plan as of June 30, 2018 and 2017 is presented below: Fair Value of Options Exercised or Restricted Stock Units Vested as of June 30, 2018 2017 Non-performance based stock options exercised 54 41 Non-performance based restricted stock units vested 745 233 Performance based restricted stock units vested 810 530 A summary of the fair value of the Company’s stock options exercised and restricted stock units vested under the 2010 Incentive Plan as of June 30, 2018 and 2017 is presented below: Fair Value of Options Exercised or Restricted Stock Units Vested as of June 30, 2018 2017 Non-performance based stock options exercised 328 422 Non-performance based restricted stock units vested 713 26

Capital Requirements and Rest33

Capital Requirements and Restrictions on Retained Earnings (Tables)	6 Months Ended
	Jun. 30, 2018
Banking and Thrift [Abstract]
Schedule of Comparison of the Company's and Bank's Actual Capital Amounts and Ratios to Required Capital Amounts and Ratios	A comparison of the Company’s and Bank’s actual capital amounts and ratios to required capital amounts and ratios is presented in the following table: Actual For Capital Adequacy Purposes To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio As of June 30, 2018 Total capital (to risk-weighted assets) Company $ 368,196 13.31 % $ 221,305 8.0 % n/a n/a Bank 323,627 11.70 % 221,283 8.0 % $ 276,604 10.0 % Tier 1 capital (to risk-weighted assets) Company 348,365 12.60 % 165,888 6.0 % n/a n/a Bank 308,785 11.16 % 166,013 6.0 % 221,351 8.0 Common equity tier 1 to risk-weighted assets Company 336,664 12.17 % 124,485 4.5 % n/a n/a Bank 308,785 11.16 % 124,510 4.5 % 179,848 6.5 Tier 1 capital (to average assets) Company 348,365 12.08 % 115,353 4.0 % n/a n/a Bank 308,785 10.70 % 115,434 4.0 % 144,292 5.0 As of December 31, 2017 Total capital (to risk-weighted assets) Company $ 342,521 13.16 % $ 208,219 8.0 % n/a n/a Bank 296,207 11.37 % 208,413 8.0 % $ 260,516 10.0 % Tier 1 capital (to risk-weighted assets) Company 324,726 12.48 % 156,118 6.0 % n/a n/a Bank 283,399 10.88 % 156,286 6.0 % 208,382 8.0 Common equity tier 1 to risk-weighted assets Company 313,024 12.03 % 11,791 4.5 % n/a n/a Bank 283,399 10.88 % 117,215 4.5 % 169,310 6.5 Tier 1 capital (to average assets) Company 324,726 12.92 % 100,534 4.0 % n/a n/a Bank 283,399 11.28 % 100,496 4.0 % 125,620 5.0

Business Combinations (Tables)

Business Combinations (Tables)	6 Months Ended
	Jun. 30, 2018
Business Combinations [Abstract]
Schedule of Acquired Assets and Assumed Liabilities	Estimate at December 31, 2017 Measurement Period Adjustments Final Fair Value Assets Cash and cash equivalents $ 57,384 $ — $ 57,384 Investment securities 54,137 — 54,137 Loans 312,608 572 313,180 Accrued interest receivable 1,191 — 1,191 Bank premises, furniture and equipment 6,145 688 6,833 Non-marketable equity securities 2,096 — 2,096 Other real estate owned 166 — 166 Intangible assets 7,519 (1,705 ) 5,814 Goodwill 23,496 (215 ) 23,281 Other assets 2,509 617 3,126 Total assets $ 467,251 $ (43 ) $ 467,208 Liabilities Deposits $ 395,851 $ (303 ) $ 395,548 Accounts payable and accrued expenses 1,287 260 1,547 Accrued interest payable and other liabilities 142 — 142 Subordinated notes (1) 4,625 — 4,625 Total liabilities $ 401,905 $ (43 ) $ 401,862 Consideration Market value of common stock issued $ 40,337 $ — $ 40,337 Cash paid 25,009 — 25,009 Total fair value of consideration $ 65,346 $ — $ 65,346 (1) The subordinated note was paid off in full on December 1, 2017, subsequent to closing. The following table presents the amounts recorded on the condensed consolidated balance sheets on the acquisition date of August 1, 2017, showing the estimated fair value as reported at December 31, 2017, the measurement period adjustments and the fair value determined to be final as of March 31, 2018. Estimate at December 31, 2017 Measurement Period Adjustments Final Fair Value Assets Cash and cash equivalents $ 44,775 $ — $ 44,775 Investment securities 166,307 — 166,307 Loans 752,450 (4,622 ) 747,828 Accrued interest receivable 3,102 — 3,102 Bank premises, furniture and equipment 17,805 474 18,279 Non-marketable equity securities 6,751 — 6,751 Other real estate owned 282 — 282 Intangible assets 8,454 749 9,203 Goodwill 109,091 2,210 111,301 Other assets 13,148 1,189 14,337 Total Assets $ 1,122,165 $ — $ 1,122,165 Liabilities Deposits $ 809,366 $ — $ 809,366 Accounts payable and accrued expenses 6,284 — 6,284 Accrued interest payable and other liabilities 806 — 806 Advances from Federal Home Loan Bank 80,000 — 80,000 Junior subordinated debentures 8,609 — 8,609 Total liabilities $ 905,065 $ — $ 905,065 Preferred stock - series D 24,500 — 24,500 Total stockholders’ equity 24,500 — 24,500 Consideration Market value of common stock issued $ 136,385 $ — $ 136,385 Cash paid 56,215 — 56,215 Total fair value of consideration $ 192,600 $ — $ 192,600
Summary of Loans Acquired in a Business Combination	The following table discloses the fair value and contractual value of loans acquired from Sovereign on August 1, 2017: PCI loans Other Acquired Loans Total Acquired Loans Real Estate $ 17,708 $ 518,261 $ 535,969 Commercial 29,877 180,730 210,607 Consumer — 1,252 1,252 Total fair value 47,585 700,243 747,828 Contractual principal balance $ 67,985 $ 707,071 $ 775,056 The following table presents additional information about PCI loans acquired from Sovereign on August 1, 2017: PCI Loans Contractually required principal and interest $ 85,125 Non-accretable difference 33,064 Cash flows expected to be collected $ 52,061 Accretable difference 4,476 Fair value of PCI loans $ 47,585 The following table discloses the fair value and contractual value of loans acquired from Liberty on December 1, 2017: PCI loans Other acquired loans Total Acquired Loans Real Estate $ 868 $ 257,578 $ 258,446 Commercial 307 49,695 50,002 Consumer — 4,732 4,732 Total fair value 1,175 312,005 313,180 Contractual principal balance $ 1,748 $ 316,119 $ 317,867 The following table presents additional information about PCI loans acquired from Liberty on December 1, 2017: PCI Loans Contractually required principal and interest $ 2,316 Non-accretable difference 711 Cash flows expected to be collected $ 1,605 Accretable difference 430 Fair value of PCI loans $ 1,175
Summary of Finite-Lived Intangible Assets Acquired	The following table discloses the fair value of intangible assets acquired from Sovereign on August 1, 2017: Gross Intangible Assets Core deposit intangibles (1) $ 8,452 Servicing asset (2) 317 Intangible lease assets (3) 434 $ 9,203 (1) The Company estimated a useful life of 7.7 years for core deposit intangibles. (2) The Company estimated a weighted-average useful life of 6.1 years for servicing asset which will be amortized on a straight line basis. (3) The Company estimated a weighted-average useful life of 5.0 years for intangible lease assets which will be amortized on a straight line basis

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)	6 Months Ended
	Jun. 30, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Intangible Assets	Intangible assets in the accompanying condensed consolidated balance sheets are summarized as follows: As of June 30, 2018 Weighted Gross Net Amortization Intangible Accumulated Intangible Period Assets Amortization Assets Core deposit intangibles 8.3 years $ 16,051 $ 3,513 $ 12,538 Servicing asset 6.8 years 1,798 615 1,183 Intangible lease assets 2.9 years 5,281 1,520 — 3,761 $ 23,130 $ 5,648 $ 17,482 As of December 31, 2017 Weighted Gross Net Amortization Intangible Accumulated Intangible Period Assets Amortization Assets Core deposit intangibles 8.7 years $ 17,007 $ 2,694 $ 14,313 Servicing asset 6.8 years 1,621 406 1,215 Intangible lease assets 3.3 years 5,281 368 4,913 $ 23,909 $ 3,468 $ 20,441
Summary of Changes in the Carrying Amount of Goodwill	Changes in the carrying amount of goodwill are summarized as follows for the six months ended June 30, 2018 : June 30, 2018 Beginning of period $ 159,452 Effect of Sovereign acquisition 2,210 Effect of Liberty acquisition (215 ) End of period $ 161,447

Branch Assets and Liabilities36

Branch Assets and Liabilities Held For Sale (Tables)	6 Months Ended
	Jun. 30, 2018
Discontinued Operations and Disposal Groups [Abstract]
Summary of Branch Assets and Liabilities Held for Sale	The following table presents the assets and liabilities held for sale as of June 30, 2018 and December 31, 2017 : June 30, 2018 December 31, 2017 Assets Cash and cash equivalents $ — $ 334 Loans — 26,313 Accrued interest receivable — 63 Bank premises, furniture and equipment 1,753 5,118 Intangible assets — 1,724 Total assets $ 1,753 $ 33,552 Liabilities Deposits $ — $ 64,282 Accounts payable and accrued expenses — 2 Deferred tax liability — 327 Accrued interest payable and other liabilities — 16 Total liabilities $ — $ 64,627

Summary of Significant Accoun37

Summary of Significant Accounting Policies - Additional Information (Details)	6 Months Ended
	Jun. 30, 2018segmentmortgage_officebranch
Nature of Organization:
Number of reportable segments | segment	1
Dallas-Fort Worth
Nature of Organization:
Number of branches	20
Number of mortgage offices | mortgage_office	1
Houston
Nature of Organization:
Number of branches	1

Summary of Significant Accoun38

Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings (numerator)
Net income	$ 10,193	$ 3,615	$ 20,581	$ 6,713
Shares (denominator) in thousands
Weighted average shares outstanding for basic EPS (thousands) (in shares)	24,148	15,211	24,139	15,205
Dilutive effect of employee stock based awards (in shares)	398	426	388	428
Adjusted weighted average shares outstanding (in shares)	24,546	15,637	24,527	15,633
Earnings per share:
Basic (in dollars per share)	$ 0.42	$ 0.24	$ 0.85	$ 0.44
Diluted (in dollars per share)	$ 0.42	$ 0.23	$ 0.84	$ 0.43

Summary of Significant Accoun39

Summary of Significant Accounting Policies - Antidilutive Securities (Details) - shares	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Accounting Policies [Abstract]
Excluded from diluted EPS weighted average shares (in shares)	0	0

Supplemental Statement of Cas40

Supplemental Statement of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$ 11,962	$ 3,745
Cash paid for income taxes	5,100	3,500
Supplemental Disclosures of Non-Cash Flow Information:
Net foreclosure of other real estate owned and repossessed assets	8	0
Noncash assets acquired
Loans	(4,050)	0
Bank premises, furniture and equipment	1,162	0
Intangible assets	(956)	0
Goodwill	1,995	0
Other assets	1,806	0
Noncash liabilities assumed:
Deposits	303	0
Accrued interest payable and other liabilities	$ (260)	$ 0

Investment Securities - Carryin

Investment Securities - Carrying Amount and Fair Values (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Available for Sale securities
Amortized Cost	$ 257,335	$ 229,737
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	130	602
Gross Unrealized Losses	5,278	2,222
Fair Value	252,187	228,117
U.S. government agencies
Available for Sale securities
Amortized Cost	10,365	10,829
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	0	9
Gross Unrealized Losses	221	18
Fair Value	10,144	10,820
Corporate bonds
Available for Sale securities
Amortized Cost	20,842	17,500
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	61	330
Gross Unrealized Losses	48	0
Fair Value	20,855	17,830
Municipal securities
Available for Sale securities
Amortized Cost	43,792	55,499
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	37	189
Gross Unrealized Losses	391	211
Fair Value	43,438	55,477
Mortgage-backed securities
Available for Sale securities
Amortized Cost	92,998	91,734
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	11	58
Gross Unrealized Losses	2,746	1,068
Fair Value	90,263	90,724
Collateralized mortgage obligations
Available for Sale securities
Amortized Cost	88,781	53,559
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	18	9
Gross Unrealized Losses	1,872	925
Fair Value	86,927	52,643
Asset-backed securities
Available for Sale securities
Amortized Cost	557	616
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax	3	7
Gross Unrealized Losses	0	0
Fair Value	$ 560	$ 623

Investment Securities - Unreali

Investment Securities - Unrealized Loss Position (Details) $ in Thousands	Jun. 30, 2018USD ($)investment	Dec. 31, 2017USD ($)investment
Fair Value
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months	$ 142,499	$ 101,719
Debt securities, available-for-sale, continuous unrealized loss position, 12 Months or longer	55,132	57,511
Debt securities, available-for-sale, continuous unrealized loss position	197,631	159,230
Unrealized Loss
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss	3,067	991
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	2,211	1,231
Debt securities, available-for-sale, continuous unrealized loss position, accumulated loss	$ 5,278	$ 2,222
Number of investment positions in an unrealized loss position | investment	144	118
U.S. government agencies
Fair Value
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months	$ 9,572	$ 3,470
Debt securities, available-for-sale, continuous unrealized loss position, 12 Months or longer	572	629
Debt securities, available-for-sale, continuous unrealized loss position	10,144	4,099
Unrealized Loss
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss	199	4
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	22	14
Debt securities, available-for-sale, continuous unrealized loss position, accumulated loss	221	18
Corporate bonds
Fair Value
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months	3,795
Debt securities, available-for-sale, continuous unrealized loss position, 12 Months or longer	0
Debt securities, available-for-sale, continuous unrealized loss position	3,795
Unrealized Loss
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss	48
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	0
Debt securities, available-for-sale, continuous unrealized loss position, accumulated loss	48
Municipal securities
Fair Value
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months	24,582	14,593
Debt securities, available-for-sale, continuous unrealized loss position, 12 Months or longer	5,395	7,092
Debt securities, available-for-sale, continuous unrealized loss position	29,977	21,685
Unrealized Loss
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss	220	79
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	171	132
Debt securities, available-for-sale, continuous unrealized loss position, accumulated loss	391	211
Mortgage-backed securities
Fair Value
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months	62,519	52,075
Debt securities, available-for-sale, continuous unrealized loss position, 12 Months or longer	25,934	29,485
Debt securities, available-for-sale, continuous unrealized loss position	88,453	81,560
Unrealized Loss
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss	1,726	513
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	1,020	555
Debt securities, available-for-sale, continuous unrealized loss position, accumulated loss	2,746	1,068
Collateralized mortgage obligations
Fair Value
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months	42,031	31,581
Debt securities, available-for-sale, continuous unrealized loss position, 12 Months or longer	23,231	20,305
Debt securities, available-for-sale, continuous unrealized loss position	65,262	51,886
Unrealized Loss
Debt securities, available-for-sale, continuous unrealized loss position, less than 12 months, accumulated loss	874	395
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	998	530
Debt securities, available-for-sale, continuous unrealized loss position, accumulated loss	$ 1,872	$ 925

Investment Securities - Maturit

Investment Securities - Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized Cost
Due in one year or less	$ 2,135	$ 2,328
Due from one year to five years	33,878	29,654
Due from five years to ten years	22,924	34,480
Due after ten years	16,062	17,366
Total investment securities available for sale, single maturity date	74,999	83,828
Amortized Cost	257,335	229,737
Fair Value
Due in one year or less	2,139	2,330
Due from one year to five years	33,677	29,991
Due from five years to ten years	22,753	34,474
Due after ten years	15,868	17,332
Total investment securities available for sale	74,437	84,127
Total investment securities available for sale, fair value	252,187	228,117
Mortgage-backed securities
Amortized Cost
Amortized cost	92,998	91,734
Fair Value
Fair value	90,263	90,724
Collateralized mortgage obligations
Amortized Cost
Amortized cost	88,781	53,559
Fair Value
Fair value	86,927	52,643
Asset-backed securities
Amortized Cost
Amortized cost	557	616
Fair Value
Fair value	$ 560	$ 623

Investment Securities - Proceed

Investment Securities - Proceeds and Gross Gains/Losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from Sale of Available-for-sale Securities, Debt	$ 30,961	$ 0
Proceeds from sales of investment securities available for sale and gross gains and losses
Available-for-sale Debt Securities Gross Realized Gains	335	0
Available-for-sale Debt Securities Gross Realized Losses	$ 323	$ 0

Loans and Allowance for Loan 45

Loans and Allowance for Loan Losses - Balance Sheet Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Loans and Allowance for Loan Losses
Loans, gross	$ 2,418,908	$ 2,233,518
Deferred loan fees	(22)	(28)
Allowance for loan losses	(14,842)	(12,808)	$ (9,740)	$ (8,524)
Loans, net	2,404,044	2,220,682
Accretable discount related to loans acquired within a business combination	12,033	12,135
Loans and leases receivable, retained loans from loan sales, discount	1,705	1,189
Commercial
Loans and Allowance for Loan Losses
Loans, gross	691,718	684,551
Allowance for loan losses	(5,986)	(5,588)	(3,554)	(2,955)
Consumer
Loans and Allowance for Loan Losses
Loans, gross	7,543	9,648
Allowance for loan losses	(22)	(22)	(30)	(35)
Construction and land | Real Estate
Loans and Allowance for Loan Losses
Loans, gross	300,262	277,825
Farmland | Real Estate
Loans and Allowance for Loan Losses
Loans, gross	10,815	9,385
Real estate | Real Estate
Loans and Allowance for Loan Losses
Loans, gross	393,107	342,817
Allowance for loan losses	(1,645)	(1,473)	(1,475)	(1,116)
Commercial Real Estate | Real Estate
Loans and Allowance for Loan Losses
Loans, gross	1,015,463	909,292
Allowance for loan losses	(5,599)	(4,410)	$ (3,557)	$ (3,003)
1 - 4 family residential | Real estate | Real Estate
Loans and Allowance for Loan Losses
Loans, gross	283,486	236,542
Multi-family residential | Real estate | Real Estate
Loans and Allowance for Loan Losses
Loans, gross	$ 109,621	$ 106,275

Loans and Allowance for Loan 46

Loans and Allowance for Loan Losses - Nonaccrual (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Loans and Allowance for Loan Losses
Non-accrual loans	$ 4,252		$ 465
Loans and leases receivable, impaired, interest lost on nonaccrual loans	7	$ 33
Commercial
Loans and Allowance for Loan Losses
Non-accrual loans	2,058		398
Consumer
Loans and Allowance for Loan Losses
Non-accrual loans	4		6
Construction and land | Real Estate
Loans and Allowance for Loan Losses
Non-accrual loans	2,136		0
Farmland | Real Estate
Loans and Allowance for Loan Losses
Non-accrual loans	0		0
Real estate | 1 - 4 family residential | Real Estate
Loans and Allowance for Loan Losses
Non-accrual loans	0		0
Real estate | Multi-family residential | Real Estate
Loans and Allowance for Loan Losses
Non-accrual loans	0		0
Commercial Real Estate | Real Estate
Loans and Allowance for Loan Losses
Non-accrual loans	$ 54		$ 61

Loans and Allowance for Loan 47

Loans and Allowance for Loan Losses - Past Due (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	$ 12,047,000	$ 6,402,000
Total Current	2,406,861,000	2,227,116,000
Total Loans	2,418,908,000	2,233,518,000
Total 90 days past due and still accruing	613,000	18,000
30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	9,133,000	5,416,000
60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	745,000	579,000
90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	2,169,000	407,000
Commercial
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	8,400,000	2,627,000
Total Current	683,318,000	681,924,000
Total Loans	691,718,000	684,551,000
Total 90 days past due and still accruing	613,000	0
Commercial | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	5,951,000	1,849,000
Commercial | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	280,000	389,000
Commercial | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	2,169,000	389,000
Consumer
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	130,000	108,000
Total Current	7,413,000	9,540,000
Total Loans	7,543,000	9,648,000
Total 90 days past due and still accruing	0	18,000
Consumer | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	122,000	39,000
Consumer | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	8,000	51,000
Consumer | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	18,000
Construction and land | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	402,000	320,000
Total Current	299,860,000	277,505,000
Total Loans	300,262,000	277,825,000
Total 90 days past due and still accruing	0	0
Construction and land | Real Estate | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	46,000	320,000
Construction and land | Real Estate | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	356,000	0
Construction and land | Real Estate | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Farmland | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	104,000
Total Current	10,815,000	9,281,000
Total Loans	10,815,000	9,385,000
Total 90 days past due and still accruing	0	0
Farmland | Real Estate | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	104,000
Farmland | Real Estate | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Farmland | Real Estate | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Real estate | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	393,107,000	342,817,000
Commercial Real Estate | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	1,443,000	1,830,000
Total Current	1,014,020,000	907,462,000
Total Loans	1,015,463,000	909,292,000
Total 90 days past due and still accruing	0	0
Commercial Real Estate | Real Estate | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	1,443,000	1,830,000
Commercial Real Estate | Real Estate | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Commercial Real Estate | Real Estate | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
1 - 4 family residential | Real estate | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	1,672,000	1,413,000
Total Current	281,814,000	235,129,000
Total Loans	283,486,000	236,542,000
Total 90 days past due and still accruing	0	0
1 - 4 family residential | Real estate | Real Estate | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	1,571,000	1,274,000
1 - 4 family residential | Real estate | Real Estate | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	101,000	139,000
1 - 4 family residential | Real estate | Real Estate | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Multi-family residential | Real estate | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Total Current	109,621,000	106,275,000
Total Loans	109,621,000	106,275,000
Total 90 days past due and still accruing	0	0
Multi-family residential | Real estate | Real Estate | 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Multi-family residential | Real estate | Real Estate | 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
Multi-family residential | Real estate | Real Estate | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	0
PCI loans
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	53,330,000	63,940,000
PCI loans | 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total 90 days past due and still accruing	0	3,000
Nonperforming financial instruments
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	$ 0	0
Scenario, Adjustment | 1 - 4 family residential | Real estate | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Current		(15,123,000)
Scenario, Adjustment | Multi-family residential | Real estate | Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Current		$ 15,123,000

Loans and Allowance for Loan 48

Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2016	Dec. 31, 2017
Impaired Loans
Unpaid Contractual Principal Balance	$ 4,861		$ 1,068
Recorded Investment with No Allowance	4,814		952
Recorded Investment With Allowance	258		116
Total Recorded Investment	5,072		1,068
Related Allowance	65		12
Average Recorded Investment YTD	5,132	$ 1,194
Commercial
Impaired Loans
Unpaid Contractual Principal Balance	2,128		398
Recorded Investment with No Allowance	2,081		282
Recorded Investment With Allowance	258		116
Total Recorded Investment	2,339		398
Related Allowance	65		12
Average Recorded Investment YTD	2,226	499
Consumer
Impaired Loans
Unpaid Contractual Principal Balance	69		75
Recorded Investment with No Allowance	69		75
Recorded Investment With Allowance	0		0
Total Recorded Investment	69		75
Related Allowance	0		0
Average Recorded Investment YTD	76	87
Construction and land | Real Estate
Impaired Loans
Unpaid Contractual Principal Balance	2,136		0
Recorded Investment with No Allowance	2,136		0
Recorded Investment With Allowance	0		0
Total Recorded Investment	2,136		0
Related Allowance	0		0
Average Recorded Investment YTD	2,298	0
Farmland | Real Estate
Impaired Loans
Unpaid Contractual Principal Balance	0		0
Recorded Investment with No Allowance	0		0
Recorded Investment With Allowance	0		0
Total Recorded Investment	0		0
Related Allowance	0		0
Average Recorded Investment YTD	0	0
Commercial Real Estate | Real Estate
Impaired Loans
Unpaid Contractual Principal Balance	368		434
Recorded Investment with No Allowance	368		434
Recorded Investment With Allowance	0		0
Total Recorded Investment	368		434
Related Allowance	0		0
Average Recorded Investment YTD	371	445
1 - 4 family residential | Real estate | Real Estate
Impaired Loans
Unpaid Contractual Principal Balance	160		161
Recorded Investment with No Allowance	160		161
Recorded Investment With Allowance	0		0
Total Recorded Investment	160		161
Related Allowance	0		0
Average Recorded Investment YTD	161	163
Multi-family residential | Real estate | Real Estate
Impaired Loans
Unpaid Contractual Principal Balance	0		0
Recorded Investment with No Allowance	0		0
Recorded Investment With Allowance	0		0
Total Recorded Investment	0		0
Related Allowance	0		$ 0
Average Recorded Investment YTD	$ 0	$ 0

Loans and Allowance for Loan 49

Loans and Allowance for Loan Losses - Troubled Debt Restructuring (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2018USD ($)Loan	Jun. 30, 2017Loan	Dec. 31, 2017USD ($)
Receivables [Abstract]
Recorded investment in TDRs | $	$ 603		$ 618
Number of loans modified as TDRs for which there was a payment default | Loan	0	0

Loans and Allowance for Loan 50

Loans and Allowance for Loan Losses - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Credit Quality Indicators
Loans	$ 2,418,908	$ 2,233,518
Pass
Credit Quality Indicators
Loans	2,345,657	2,155,437
Special Mention
Credit Quality Indicators
Loans	18,147	28,209
Substandard
Credit Quality Indicators
Loans	13,552	2,144
Doubtful
Credit Quality Indicators
Loans	0	116
PCI
Credit Quality Indicators
Loans	41,552	47,612
Commercial
Credit Quality Indicators
Loans	691,718	684,551
Commercial | Pass
Credit Quality Indicators
Loans	651,912	634,796
Commercial | Special Mention
Credit Quality Indicators
Loans	7,280	18,337
Commercial | Substandard
Credit Quality Indicators
Loans	8,118	1,155
Commercial | Doubtful
Credit Quality Indicators
Loans	0	116
Commercial | PCI
Credit Quality Indicators
Loans	24,408	30,147
Consumer
Credit Quality Indicators
Loans	7,543	9,648
Consumer | Pass
Credit Quality Indicators
Loans	7,453	9,540
Consumer | Special Mention
Credit Quality Indicators
Loans	0	0
Consumer | Substandard
Credit Quality Indicators
Loans	90	108
Consumer | Doubtful
Credit Quality Indicators
Loans	0	0
Consumer | PCI
Credit Quality Indicators
Loans	0	0
Construction and land | Real Estate
Credit Quality Indicators
Loans	300,262	277,825
Construction and land | Real Estate | Pass
Credit Quality Indicators
Loans	297,819	277,186
Construction and land | Real Estate | Special Mention
Credit Quality Indicators
Loans	307	639
Construction and land | Real Estate | Substandard
Credit Quality Indicators
Loans	2,136	0
Construction and land | Real Estate | Doubtful
Credit Quality Indicators
Loans	0	0
Construction and land | Real Estate | PCI
Credit Quality Indicators
Loans	0	0
Farmland | Real Estate
Credit Quality Indicators
Loans	10,815	9,385
Farmland | Real Estate | Pass
Credit Quality Indicators
Loans	10,783	9,336
Farmland | Real Estate | Special Mention
Credit Quality Indicators
Loans	0	0
Farmland | Real Estate | Substandard
Credit Quality Indicators
Loans	0	0
Farmland | Real Estate | Doubtful
Credit Quality Indicators
Loans	0	0
Farmland | Real Estate | PCI
Credit Quality Indicators
Loans	32	49
Real estate | Real Estate
Credit Quality Indicators
Loans	393,107	342,817
Real estate | 1 - 4 family residential | Real Estate
Credit Quality Indicators
Loans	283,486	236,542
Real estate | 1 - 4 family residential | Real Estate | Pass
Credit Quality Indicators
Loans	282,767	235,781
Real estate | 1 - 4 family residential | Real Estate | Special Mention
Credit Quality Indicators
Loans	309	462
Real estate | 1 - 4 family residential | Real Estate | Substandard
Credit Quality Indicators
Loans	318	200
Real estate | 1 - 4 family residential | Real Estate | Doubtful
Credit Quality Indicators
Loans	0	0
Real estate | 1 - 4 family residential | Real Estate | PCI
Credit Quality Indicators
Loans	92	99
Real estate | Multi-family residential | Real Estate
Credit Quality Indicators
Loans	109,621	106,275
Real estate | Multi-family residential | Real Estate | Pass
Credit Quality Indicators
Loans	109,621	106,275
Real estate | Multi-family residential | Real Estate | Special Mention
Credit Quality Indicators
Loans	0	0
Real estate | Multi-family residential | Real Estate | Substandard
Credit Quality Indicators
Loans	0	0
Real estate | Multi-family residential | Real Estate | Doubtful
Credit Quality Indicators
Loans	0	0
Real estate | Multi-family residential | Real Estate | PCI
Credit Quality Indicators
Loans	0	0
Commercial Real Estate | Real Estate
Credit Quality Indicators
Loans	1,015,463	909,292
Commercial Real Estate | Real Estate | Pass
Credit Quality Indicators
Loans	985,302	882,523
Commercial Real Estate | Real Estate | Special Mention
Credit Quality Indicators
Loans	10,251	8,771
Commercial Real Estate | Real Estate | Substandard
Credit Quality Indicators
Loans	2,890	681
Commercial Real Estate | Real Estate | Doubtful
Credit Quality Indicators
Loans	0	0
Commercial Real Estate | Real Estate | PCI
Credit Quality Indicators
Loans	17,020	17,317
PCI loans
Credit Quality Indicators
Loans	$ 53,330	63,940
Scenario, Adjustment | Real estate | 1 - 4 family residential | Real Estate | Pass
Credit Quality Indicators
Loans		(15,123)
Scenario, Adjustment | Real estate | Multi-family residential | Real Estate | Pass
Credit Quality Indicators
Loans		$ 15,123

Loans and Allowance for Loan 51

Loans and Allowance for Loan Losses - Allowance (Details) - USD ($)	6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017
Analysis of allowance for loan losses
Balance at beginning of period	$ 12,808,000	$ 8,524,000
Provision (recapture) charged to earnings	2,182,000	1,833,000	$ 5,114,000
Charge-offs	(171,000)	(622,000)	(839,000)
Recoveries	23,000	5,000	9,000
Net charge-offs	(148,000)	(617,000)	(830,000)
Balance at end of period	14,842,000	9,740,000	8,524,000
Specific reserves:
Total specific reserves				$ 398,000	$ 12,000	$ 138,000
General reserves				14,444,000	12,796,000	9,602,000
Total	12,808,000	8,524,000	8,524,000	$ 14,842,000	$ 12,808,000	$ 9,740,000
Allowance for loan losses (as a percent)				0.61%	0.57%	0.87%
Commercial
Analysis of allowance for loan losses
Balance at beginning of period	5,588,000	2,955,000
Provision (recapture) charged to earnings	525,000	1,205,000	3,452,000
Charge-offs	(150,000)	(611,000)	(828,000)
Recoveries	23,000	5,000	9,000
Net charge-offs	(127,000)	(606,000)	(819,000)
Balance at end of period	5,986,000	3,554,000	2,955,000
Specific reserves:
Total specific reserves				$ 398,000	$ 12,000	$ 137,000
General reserves				5,588,000	5,576,000	3,417,000
Total	5,588,000	2,955,000	2,955,000	5,986,000	5,588,000	3,554,000
Consumer
Analysis of allowance for loan losses
Balance at beginning of period	22,000	35,000
Provision (recapture) charged to earnings	21,000	(5,000)	(13,000)
Charge-offs	(21,000)	0	0
Recoveries	0	0	0
Net charge-offs	(21,000)	0	0
Balance at end of period	22,000	30,000	35,000
Specific reserves:
Total specific reserves				0	0	1,000
General reserves				22,000	22,000	29,000
Total	22,000	35,000	35,000	22,000	22,000	30,000
Construction, Land and Farmland | Real Estate
Analysis of allowance for loan losses
Balance at beginning of period	1,315,000	1,415,000
Provision (recapture) charged to earnings	275,000	(291,000)	(100,000)
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs	0	0	0
Balance at end of period	1,590,000	1,124,000	1,415,000
Specific reserves:
Total specific reserves				0	0	0
General reserves				1,590,000	1,315,000	1,124,000
Total	1,315,000	1,415,000	1,415,000	1,590,000	1,315,000	1,124,000
Residential | Real Estate
Analysis of allowance for loan losses
Balance at beginning of period	1,473,000	1,116,000
Provision (recapture) charged to earnings	172,000	370,000	368,000
Charge-offs	0	(11,000)	(11,000)
Recoveries	0	0	0
Net charge-offs	0	(11,000)	(11,000)
Balance at end of period	1,645,000	1,475,000	1,116,000
Specific reserves:
Total specific reserves				0	0	0
General reserves				1,645,000	1,473,000	1,475,000
Total	1,473,000	1,116,000	1,116,000	1,645,000	1,473,000	1,475,000
Commercial Real Estate | Real Estate
Analysis of allowance for loan losses
Balance at beginning of period	4,410,000	3,003,000
Provision (recapture) charged to earnings	1,189,000	554,000	1,407,000
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs	0	0	0
Balance at end of period	5,599,000	3,557,000	3,003,000
Specific reserves:
Total specific reserves				0	0	0
General reserves				5,599,000	4,410,000	3,557,000
Total	4,410,000	3,003,000	$ 3,003,000	5,599,000	4,410,000	3,557,000
PCI
Analysis of allowance for loan losses
Balance at beginning of period	0
Balance at end of period	333,000	0
Specific reserves:
Total	$ 0	$ 0		$ 333,000	$ 0	$ 0

Loans and Allowance for Loan 52

Loans and Allowance for Loan Losses - Allowance, Additional Information (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Allowance, impairment methodology
Loans individually evaluated for impairment	$ 4,861	$ 1,068
Loans collectively evaluated for impairment	2,372,495	2,184,838
Loans, gross	2,418,908	2,233,518
Commercial
Allowance, impairment methodology
Loans individually evaluated for impairment	2,128	398
Loans collectively evaluated for impairment	665,182	654,006
Loans, gross	691,718	684,551
Consumer
Allowance, impairment methodology
Loans individually evaluated for impairment	69	75
Loans collectively evaluated for impairment	7,474	9,573
Loans, gross	7,543	9,648
Construction, Land and Farmland | Real Estate
Allowance, impairment methodology
Loans individually evaluated for impairment	2,136	0
Loans collectively evaluated for impairment	308,909	287,161
Loans, gross	311,077	287,210
Residential | Real Estate
Allowance, impairment methodology
Loans individually evaluated for impairment	160	161
Loans collectively evaluated for impairment	392,855	342,557
Loans, gross	393,107	342,817
Commercial Real Estate | Real Estate
Allowance, impairment methodology
Loans individually evaluated for impairment	368	434
Loans collectively evaluated for impairment	998,075	891,541
Loans, gross	1,015,463	909,292
PCI loans
Allowance, impairment methodology
Loans receivable, net	41,552	47,612
Loans, gross	53,330	63,940
PCI loans | Commercial
Allowance, impairment methodology
Loans receivable, net	24,408	30,147
PCI loans | Consumer
Allowance, impairment methodology
Loans receivable, net	0	0
PCI loans | Construction, Land and Farmland | Real Estate
Allowance, impairment methodology
Loans receivable, net	32	49
PCI loans | Residential | Real Estate
Allowance, impairment methodology
Loans receivable, net	92	99
PCI loans | Commercial Real Estate | Real Estate
Allowance, impairment methodology
Loans receivable, net	$ 17,020	$ 17,317

Loans and Allowance For Loan 53

Loans and Allowance For Loan Losses - PCI Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans	$ 2,418,908	$ 2,233,518
Receivables Acquired with Deteriorated Credit Quality
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans receivable, net	41,552	47,612
Loans	$ 53,330	$ 63,940

Loans and Allowance for Loan 54

Loans and Allowance for Loan Losses - PCI Accretable Yield Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 8,139	$ 2,723
Purchase accounting adjustments	45	1,459
Reclassifications from nonaccretable	351	6,221
Accretion	(1,200)	(3,068)
Balance at end of period	$ 7,335	$ 7,335

Loans and Allowance for Loan 55

Loans and Allowance for Loan Losses - Servicing Assets (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Servicing Asset at Amortized Cost [Line Items]
Servicing asset	$ 74,615,000	$ 44,720,000
Summary of changes in related servicing assets
Balance at beginning of period	1,215,000	601,000
Increase from loan sales	177,000	281,000
Amortization charged to income	(209,000)	(88,000)
Balance at end of period	1,183,000	794,000
Valuation allowance recorded	0	$ 0
Interest receivable	8,137,000		$ 7,676,000
Interest-only strip
Summary of changes in related servicing assets
Interest receivable	$ 0		$ 0

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Income Tax Examination [Line Items]
Estimated annual effective tax rate (as a percent)	19.70%	34.80%	20.00%	34.50%
Effective tax rate (as a percent)	18.70%	33.30%	22.20%	32.00%
Discrete tax benefit	$ 98	$ 83	$ 156	$ 255
Income Tax Expense (Benefit)	2,350	$ 1,802	5,861	$ 3,152
Sovereign Bancshares, Inc and Liberty Bancshares, Inc.
Income Tax Examination [Line Items]
Effective income tax rate reconciliation, change in enacted tax rate, amount	$ 722		$ 722

Commitments and Contingencies57

Commitments and Contingencies (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2018USD ($)	Jun. 30, 2018USD ($)	Dec. 31, 2017USD ($)
Loss Contingency Accrual [Roll Forward]
Leases Ceased			2
Qualified affordable housing investment	$ 3,719	$ 3,719	$ 1,982
Amortization method qualified affordable housing projects, additional investments	1,900
Qualified affordable housing project investments, unfunded commitment	3,149	3,149	1,765
Cease-Use
Loss Contingency Accrual [Roll Forward]
December 31, 2017		1,407
Payments		(43)
Reversal upon lease assignment		(669)
June 30, 2018	$ 695	$ 695	$ 1,407

Fair Value Disclosures - Recurr

Fair Value Disclosures - Recurring Basis (Details) - USD ($)	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Assets measured at fair value
Investment securities available for sale	$ 252,187,000		$ 228,117,000
Recurring
Assets measured at fair value
Investment securities available for sale	252,187,000		228,117,000
Liabilities measured at fair value	0		0
Transfer of assets from Level 2 to Level 3	0	$ 0
Transfer of assets from Level 3 to Level 2	0	$ 0
Recurring | Level 1 Inputs
Assets measured at fair value
Investment securities available for sale	0		0
Recurring | Level 2 Inputs
Assets measured at fair value
Investment securities available for sale	252,187,000		228,117,000
Recurring | Level 3 Inputs
Assets measured at fair value
Investment securities available for sale	$ 0		$ 0

Fair Value Disclosures - Non-re

Fair Value Disclosures - Non-recurring Basis (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Assets measured at fair value
Impaired loans, specific allowance	$ 65,000	$ 12,000
Non-recurring
Assets measured at fair value
Impaired loans	258,000	116,000
Other real estate owned		449,000
Liabilities measured at fair value	0	0
Non-recurring | Level 1 Inputs
Assets measured at fair value
Impaired loans	0	0
Other real estate owned		0
Non-recurring | Level 2 Inputs
Assets measured at fair value
Impaired loans	0	0
Other real estate owned		0
Non-recurring | Level 3 Inputs
Assets measured at fair value
Impaired loans	$ 258,000	116,000
Other real estate owned		$ 449,000

Fair Value Disclosures - Level

Fair Value Disclosures - Level 3 (Details) - Collateral Method - Level 3 - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Impaired loans
Significant unobservable inputs used in the fair value measurements
Fair Value	$ 258	$ 116
Weighted Average (as a percent)	8.00%	8.00%
Other Real Estate Owned
Significant unobservable inputs used in the fair value measurements
Fair Value		$ 449
Weighted Average (as a percent)		8.00%

Fair Value Disclosures - Financ

Fair Value Disclosures - Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financial assets:
Financial instruments, assets held for sale	$ 1,753	$ 31,828
Financial liabilities:
Junior subordinated debentures	11,702	11,702
Subordinated notes	4,988	4,987
Other borrowings	0	15,000
Branch liabilities held for sale	0	64,627
Carrying Amount
Financial assets:
Cash and cash equivalents	146,740	149,044
Loans held for sale	453	841
Loans, net	2,404,044	2,220,682
Accrued interest receivable	8,137	7,676
Bank-owned life insurance	21,767	21,476
Servicing asset	1,183	1,243
Non-marketable equity securities	27,086	13,732
Financial liabilities:
Deposits	2,490,418	2,278,630
Advances from FHLB	108,092	71,164
Accrued interest payable	900	445
Junior subordinated debentures	11,702	11,702
Subordinated notes	4,988	4,987
Other borrowings		15,000
Branch liabilities held for sale		64,300
Level 1 Inputs | Fair Value
Financial assets:
Cash and cash equivalents	0	0
Loans held for sale	0	0
Loans, net	0	0
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Servicing asset	0	0
Non-marketable equity securities	0	0
Financial instruments, assets held for sale		0
Financial liabilities:
Deposits	0	0
Advances from FHLB	0	0
Accrued interest payable	0	0
Junior subordinated debentures	0	0
Subordinated notes	0	0
Other borrowings		0
Branch liabilities held for sale		0
Level 2 Inputs | Fair Value
Financial assets:
Cash and cash equivalents	146,740	149,044
Loans held for sale	453	841
Loans, net	0
Accrued interest receivable	8,137	7,676
Bank-owned life insurance	21,767	21,476
Servicing asset	1,183	1,243
Non-marketable equity securities	27,086	13,732
Financial instruments, assets held for sale	1,753	5,515
Financial liabilities:
Deposits	2,432,512	2,164,498
Advances from FHLB	108,128	70,110
Accrued interest payable	900	445
Junior subordinated debentures	11,702	11,702
Subordinated notes	4,988	4,987
Other borrowings		15,000
Branch liabilities held for sale		64,300
Level 3 Inputs | Fair Value
Financial assets:
Cash and cash equivalents	0	0
Loans held for sale	0	0
Loans, net	2,420,850	2,234,094
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Servicing asset	0	0
Non-marketable equity securities	0	0
Financial instruments, assets held for sale	0	26,313
Financial liabilities:
Deposits	0	0
Advances from FHLB	0	0
Accrued interest payable	0	0
Junior subordinated debentures	0	0
Subordinated notes	$ 0	0
Other borrowings		0
Branch liabilities held for sale		$ 0

Financial Instruments with Of62

Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Financial instruments with off-balance sheet risk
Total commitments	$ 714,333	$ 615,750
Commitments to extend credit
Financial instruments with off-balance sheet risk
Total commitments	707,679	606,451
Standby and commercial letters of credit
Financial instruments with off-balance sheet risk
Total commitments	$ 6,654	$ 9,299

Stock and Incentive Plans - 201

Stock and Incentive Plans - 2010 Plan (Details) - 2010 Stock Option and Equity Incentive Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 6	$ 20	$ 11	$ 42
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded (in shares)			0	0
Nonperformance-based stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded under stock options (in shares)			0	0
Performance Based Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded under stock options (in shares)			0	0

Stock and Incentive Plans - 264

Stock and Incentive Plans - 2010 Plan - Options (Details) - Nonperformance-based stock options - 2010 Stock Option and Equity Incentive Plan - USD ($) $ / shares in Units, $ in Thousands	Jan. 01, 2018	Jan. 01, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Shares Underlying Options
Outstanding at beginning of period (in shares)	305,000	325,500	305,000	325,500
Exercised during the period (in shares)			(11,500)	(15,000)
Outstanding at the end of period (in shares)			293,500	310,500
Options exercisable at end of period (in shares)			289,500	297,000
Weighted Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 10.16	$ 10.15	$ 10.16	$ 10.15
Exercised during the period (in dollars per share)			10.48	10
Outstanding at the end of period (in dollars per share)			10.15	10.16
Options exercisable at end of period (in dollars per share)			$ 10.13	$ 10.12
Weighted Average Contractual Term
Weighted Average Contractual Term	3 years 7 months 2 days	4 years 6 months 22 days	3 years 15 days	4 years 1 month 2 days
Weighted Average Contractual Term			3 years	4 years
Additional disclosures
Aggregate intrinsic value of exercised stock options			$ 237
Aggregate intrinsic value of outstanding stock options			6,139		$ 5,316
Aggregate intrinsic value of exercisable stock options			6,063
Unrecognized compensation expense			$ 5	$ 15	$ 8
Requisite service period to recognize compensation cost			8 months 9 days
Non-performance based stock options exercised			$ 328	422
Non-performance based restricted stock units vested			$ 713	$ 26

Stock and Incentive Plans - 265

Stock and Incentive Plans - 2010 Plan - Restricted Stock Units (Details) - Restricted Stock Units - 2010 Stock Option and Equity Incentive Plan - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Units
Nonvested at the beginning of the period (in shares)	24,250	27,750
Vested during the period (in shares)	(23,750)	(1,000)
Forfeited during the period (in shares)	(500)	(500)
Nonvested at the end of the period (in shares)	0	26,250
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 13.19	$ 11.92
Vested during the period (in dollars per share)	12.14	10.85
Forfeited during the period (in dollars per share)	10.85	10.85
Nonvested at the end of the period (in dollars per share)	$ 0	$ 11.98
Additional disclosures
Unrecognized compensation expense	$ 8	$ 54	$ 15

Stock and Incentive Plans - Omn

Stock and Incentive Plans - Omnibus Plan (Details) - Omnibus Plan - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Non-performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded (in shares)			54,650	31,375
Non-performance based restricted stock units | Equal annual installments, tranche one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
Performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded (in shares)			40,269	25,522
Nonperformance-based stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares awarded under stock options (in shares)			125,593	65,440
Stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense	$ 1,360		$ 2,125
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock based compensation expense		$ 374		$ 749

Stock and Incentive Plans - O67

Stock and Incentive Plans - Omnibus Plan Black Scholes Assumptions - (Details) - Omnibus Plan	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Assumptions used to measure fair value of each option award estimated on grant date using Black-Scholes option-pricing model
Dividend yield (as a percent)	0.00%	0.00%
Expected volatility, minimum (as a percent)	27.87%
Expected volatility, maximum (as a percent)	37.55%
Risk-free interest rate, minimum (as a percent)	1.06%	1.06%
Risk-free interest rate, maximum (as a percent)	2.73%	2.32%
Minimum
Assumptions used to measure fair value of each option award estimated on grant date using Black-Scholes option-pricing model
Expected life	5 years
Maximum
Assumptions used to measure fair value of each option award estimated on grant date using Black-Scholes option-pricing model
Expected life	7 years 6 months

Stock and Incentive Plans - O68

Stock and Incentive Plans - Omnibus Plan - Options (Details) - Omnibus Plan - Nonperformance-based stock options - USD ($) $ / shares in Units, $ in Thousands	Jan. 01, 2018	Jan. 01, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Shares Underlying Options
Outstanding at beginning of period (in shares)	332,706	128,366	332,706	128,366
Granted during the period (in shares)			125,593	65,440
Forfeited during the period (in shares)				3,465
Exercised during the period (in shares)			(1,983)	(1,544)
Outstanding at the end of period (in shares)			456,316	188,797
Options exercisable at end of period (in shares)			106,728.95	51,204
Weighted Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 22.71	$ 15.32	$ 22.71	$ 15.32
Granted during the period (in dollars per share)			27.95	26.89
Forfeited during the period (in dollars per share)				21.24
Exercised during the period (in dollars per share)			14.95	15
Outstanding at the end of period (in dollars per share)			24.14	19.22
Options exercisable at end of period (in dollars per share)			17.41	$ 14.96
Weighted average fair value of options granted during the period (in dollars per share)			$ 9.66
Weighted Average Contractual Term
Weighted Average Contractual Term	8 years 10 months 10 days	8 years 8 months 9 days	8 years 8 months 5 days	8 years 7 months 17 days
Weighted Average Contractual Term			7 years 4 months 6 days	7 years 11 months 5 days
Additional disclosures
Aggregate intrinsic value of outstanding stock options			$ 3,142		$ 1,614
Aggregate intrinsic value of exercised stock options			32
Aggregate intrinsic value of exercisable stock options			$ 1,457

Stock and Incentive Plans - O69

Stock and Incentive Plans - Omnibus Plan - Restricted Stock Units (Details) - Omnibus Plan - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Non-performance based restricted stock units
Units
Nonvested at the beginning of the period (in shares)	150,722	67,956
Granted during the period (in shares)	54,650	31,375
Vested during the period (in shares)	(27,711)	(8,475)
Forfeited during the period (in shares)	(3,501)	(2,250)
Nonvested at the end of the period (in shares)	174,160	88,606
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 13.29	$ 13.79
Granted during the period (in dollars per share)	29.29	27.49
Vested during the period (in dollars per share)	27.99	25.42
Forfeited during the period (in dollars per share)	28.35	27.93
Nonvested at the end of the period (in dollars per share)	$ 15.67	$ 17.17
Performance based restricted stock units
Units
Nonvested at the beginning of the period (in shares)	53,594	51,197
Granted during the period (in shares)	40,269	25,522
Vested during the period (in shares)	(26,623)	(19,861)
Forfeited during the period (in shares)		(2,014)
Nonvested at the end of the period (in shares)	67,240	54,844
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 8.72	$ 8.72
Granted during the period (in dollars per share)	27.59	24.34
Vested during the period (in dollars per share)	18.83	15.34
Forfeited during the period (in dollars per share)		15.68
Nonvested at the end of the period (in dollars per share)	$ 16.01	$ 13.33
Stock option
Additional disclosures
Unrecognized compensation expense	$ 2,655	$ 881	$ 1,958
Requisite service period to recognize compensation cost	2 years 6 months 4 days
Restricted Stock Units
Additional disclosures
Unrecognized compensation expense	$ 4,577	$ 1,923	$ 3,592

Stock and Incentive Plans - Fai

Stock and Incentive Plans - Fair Value Options Exercised or Restricted Stock Units Vested (Details) - Omnibus Plan - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Non-performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-performance based stock options exercised	$ 54	$ 41
Non-performance based restricted stock units vested	745	233
Performance based restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-performance based restricted stock units vested	$ 810	$ 530

Capital Requirements and Rest71

Capital Requirements and Restrictions on Retained Earnings (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Total capital (to risk weighted assets)
Actual Amount	$ 368,196	$ 342,521
Actual Ratio (as a percent)	13.31%	13.16%
For Capital Adequacy Purposes Amount	$ 221,305	$ 208,219
For Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
Tier 1 capital (to risk weighted assets)
Actual Amount	$ 348,365	$ 324,726
Actual Ratio (as a percent)	12.60%	12.48%
For Capital Adequacy Purposes Amount	$ 165,888	$ 156,118
For Capital Adequacy Purposes Ratio (as a percent)	6.00%	6.00%
Common equity tier 1 to risk weighted assets
Actual Amount	$ 336,664	$ 313,024
Actual Ratio (as a percent)	12.17%	12.03%
For Capital Adequacy Purposes Amount	$ 124,485	$ 11,791
For Capital Adequacy Purposes Amount (as a percent)	4.50%	4.50%
Tier 1 capital (to average assets)
Actual Amount	$ 348,365	$ 324,726
Actual Ratio (as a percent)	12.08%	12.92%
For Capital Adequacy Purposes Amount	$ 115,353	$ 100,534
For Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Bank
Total capital (to risk weighted assets)
Actual Amount	$ 323,627	$ 296,207
Actual Ratio (as a percent)	11.70%	11.37%
For Capital Adequacy Purposes Amount	$ 221,283	$ 208,413
For Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 276,604	$ 260,516
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	10.00%	10.00%
Tier 1 capital (to risk weighted assets)
Actual Amount	$ 308,785	$ 283,399
Actual Ratio (as a percent)	11.16%	10.88%
For Capital Adequacy Purposes Amount	$ 166,013	$ 156,286
For Capital Adequacy Purposes Ratio (as a percent)	6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 221,351	$ 208,382
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	8.00%	8.00%
Common equity tier 1 to risk weighted assets
Actual Amount	$ 308,785	$ 283,399
Actual Ratio (as a percent)	11.16%	10.88%
For Capital Adequacy Purposes Amount	$ 124,510	$ 117,215
For Capital Adequacy Purposes Amount (as a percent)	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 179,848	$ 169,310
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	6.50%	6.50%
Tier 1 capital (to average assets)
Actual Amount	$ 308,785	$ 283,399
Actual Ratio (as a percent)	10.70%	11.28%
For Capital Adequacy Purposes Amount	$ 115,434	$ 100,496
For Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 144,292	$ 125,620
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00%	5.00%

Business Combinations - Narrati

Business Combinations - Narrative (Details)	Mar. 31, 2018USD ($)	Dec. 01, 2017USD ($)shares	Aug. 08, 2017USD ($)$ / shares	Aug. 01, 2017USD ($)shares	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Jun. 30, 2018USD ($)	Jun. 30, 2017USD ($)	Dec. 31, 2017USD ($)
Business Acquisition [Line Items]
Goodwill					$ 161,447,000		$ 161,447,000		$ 159,452,000
Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Number of shares issued in connection with acquisition (in shares) | shares				5,117,642
Cash paid to acquire business	$ 56,215,000			$ 56,215,000
Goodwill	111,301,000
Goodwill, expected to be tax deductible				0
Merger-related expenses						$ 41,000	335,000	$ 130,000
Accounts payable and accrued expenses	6,284,000
Preferred stock - series D	24,500,000
Intangible assets	9,203,000			$ 9,203,000
Advances from Federal Home Loan Bank	80,000,000
Junior subordinated debentures	$ 8,609,000
Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Number of shares issued in connection with acquisition (in shares) | shares		1,449,944
Cash paid to acquire business		$ 25,009,000					25,009,000
Goodwill					23,281,000		23,281,000
Merger-related expenses					0			$ 0
Accounts payable and accrued expenses					1,547,000		1,547,000
Intangible assets					5,814,000		5,814,000
Junior subordinated debentures					$ 4,625,000		$ 4,625,000
Series D Preferred Stock | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Shares to be converted, conversion ratio				1
Preferred stock - series D			$ 24,727,000
Liquidation per share value (USD per share) | $ / shares			$ 1,000
Preferred stock dividends				$ 185,000
Payment of preferred stock dividends									$ 227,000

Business Combinations - Acquire

Business Combinations - Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 01, 2017	Aug. 01, 2017	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017
Assets
Goodwill				$ 161,447		$ 159,452
Consideration
Business combination, provisional information, initial accounting incomplete, adjustment, assets				(43)
Business combination, provisional information, initial accounting incomplete, adjustment, liabilities				(43)
Sovereign Bancshares, Inc.
Assets
Cash and cash equivalents	$ 44,775				$ 44,775
Investment securities	166,307				166,307
Loans	747,828				747,828
Accrued interest receivable	3,102				3,102
Bank premises, furniture and equipment	18,279				18,279
Non-marketable equity securities	6,751				6,751
Other real estate owned	282				282
Intangible assets	9,203		$ 9,203		9,203
Goodwill	111,301				111,301
Other assets	14,337				14,337
Total Assets	1,122,165				1,122,165
Liabilities
Deposits	809,366				809,366
Accounts payable and accrued expenses	6,284				6,284
Accrued interest payable and other liabilities	806				806
Advances from Federal Home Loan Bank	80,000				80,000
Junior subordinated debentures	8,609				8,609
Total liabilities	905,065				905,065
Preferred stock - series D	24,500
Consideration
Market value of common stock issued	136,385
Cash paid	56,215		56,215
Total fair value of consideration	$ 192,600
Initial accounting incomplete, adjustment, loans				572	(4,622)
Initial accounting incomplete, adjustment, property, plant, and equipment					474
Initial accounting incomplete, adjustment, intangibles					749
Adjustments to goodwill				2,210	2,210
Initial accounting incomplete, adjustment, other assets					$ 1,189
Liberty Bancshares, Inc.
Assets
Cash and cash equivalents				57,384
Investment securities				54,137
Loans				313,180
Accrued interest receivable				1,191
Bank premises, furniture and equipment				6,833
Non-marketable equity securities				2,096
Other real estate owned				166
Intangible assets				5,814
Goodwill				23,281
Other assets				3,126
Total Assets				467,208
Liabilities
Deposits				395,548
Accounts payable and accrued expenses				1,547
Accrued interest payable and other liabilities				142
Junior subordinated debentures				4,625
Total liabilities				401,862
Consideration
Market value of common stock issued				40,337
Cash paid		$ 25,009		25,009
Total fair value of consideration				65,346
Initial accounting incomplete, adjustment, property, plant, and equipment				688
Initial accounting incomplete, adjustment, intangibles				(1,705)
Adjustments to goodwill				(215)
Initial accounting incomplete, adjustment, other assets				617
Initial accounting incomplete, adjustment, deposits				(303)
Initial accounting incomplete, adjustment, accounts payable and accrued expenses				$ 260
Scenario, Previously Reported | Sovereign Bancshares, Inc.
Assets
Cash and cash equivalents			44,775
Investment securities			166,307
Loans			752,450
Accrued interest receivable			3,102
Bank premises, furniture and equipment			17,805
Non-marketable equity securities			6,751
Other real estate owned			282
Intangible assets			8,454
Goodwill			109,091
Other assets			13,148
Total Assets			1,122,165
Liabilities
Deposits			809,366
Accounts payable and accrued expenses			6,284
Accrued interest payable and other liabilities			806
Advances from Federal Home Loan Bank			80,000
Junior subordinated debentures			8,609
Total liabilities			905,065
Preferred stock - series D			24,500
Consideration
Market value of common stock issued			136,385
Cash paid			56,215
Total fair value of consideration			$ 192,600
Scenario, Previously Reported | Liberty Bancshares, Inc.
Assets
Cash and cash equivalents		57,384
Investment securities		54,137
Loans		312,608
Accrued interest receivable		1,191
Bank premises, furniture and equipment		6,145
Non-marketable equity securities		2,096
Other real estate owned		166
Intangible assets		7,519
Goodwill		23,496
Other assets		2,509
Total Assets		467,251
Liabilities
Deposits		395,851
Accounts payable and accrued expenses		1,287
Accrued interest payable and other liabilities		142
Junior subordinated debentures		4,625
Total liabilities		401,905
Consideration
Market value of common stock issued		40,337
Cash paid		25,009
Total fair value of consideration		$ 65,346

Business Combinations - Loans A

Business Combinations - Loans Acquired (Details) - USD ($) $ in Thousands	Dec. 01, 2017	Aug. 01, 2017
Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		$ 747,828
Contractual principal balance		775,056
Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	$ 313,180
Contractual principal balance	317,867
PCI loans | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		47,585
Contractual principal balance		67,985
Contractually required principal and interest		85,125
Non-accretable difference		33,064
Cash flows expected to be collected		52,061
Accretable difference		4,476
PCI loans | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	1,175
Contractual principal balance	1,748
Contractually required principal and interest	2,316
Non-accretable difference	711
Cash flows expected to be collected	1,605
Accretable difference	430
Real Estate | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		535,969
Real Estate | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	258,446
Real Estate | PCI loans | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		17,708
Real Estate | PCI loans | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	868
Commercial | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		210,607
Commercial | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	50,002
Commercial | PCI loans | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		29,877
Commercial | PCI loans | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	307
Consumer | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		1,252
Consumer | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	4,732
Consumer | PCI loans | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		0
Consumer | PCI loans | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	0
Other Acquired Loans | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		700,243
Contractual principal balance		707,071
Other Acquired Loans | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	312,005
Contractual principal balance	316,119
Other Acquired Loans | Real Estate | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		518,261
Other Acquired Loans | Real Estate | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	257,578
Other Acquired Loans | Commercial | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		180,730
Other Acquired Loans | Commercial | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	49,695
Other Acquired Loans | Consumer | Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value		$ 1,252
Other Acquired Loans | Consumer | Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Total fair value	$ 4,732

Business Combinations - Summary

Business Combinations - Summary of Intangible Assets Acquired (Details) - USD ($) $ in Thousands	Dec. 01, 2017	Aug. 01, 2017	Jun. 30, 2018	Mar. 31, 2018
Sovereign Bancshares, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		$ 9,203		$ 9,203
Sovereign Bancshares, Inc. | Core deposit intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		$ 8,452
Acquired intangible assets, weighted average useful life		7 years 8 months 12 days
Sovereign Bancshares, Inc. | Servicing asset
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		$ 317
Acquired intangible assets, weighted average useful life		6 years 1 month 6 days
Sovereign Bancshares, Inc. | Intangible lease assets
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets		$ 434
Acquired intangible assets, weighted average useful life		5 years
Liberty Bancshares, Inc.
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets			$ 5,814
Liberty Bancshares, Inc. | Core deposit intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 5,814
Acquired intangible assets, weighted average useful life	10 years

Intangible Assets and Goodwil76

Intangible Assets and Goodwill - Summary Of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Asset	$ 23,130	$ 23,909
Accumulated Amortization	5,648	3,468
Net Intangible Asset	$ 17,482	$ 20,441
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted Amortization Period	8 years 3 months 26 days	8 years 8 months 12 days
Gross Intangible Asset	$ 16,051	$ 17,007
Accumulated Amortization	3,513	2,694
Net Intangible Asset	$ 12,538	$ 14,313
Servicing asset
Finite-Lived Intangible Assets [Line Items]
Weighted Amortization Period	6 years 9 months 18 days	6 years 9 months 18 days
Gross Intangible Asset	$ 1,798	$ 1,621
Accumulated Amortization	615	406
Net Intangible Asset	$ 1,183	$ 1,215
Intangible lease assets
Finite-Lived Intangible Assets [Line Items]
Weighted Amortization Period	2 years 10 months 24 days	3 years 3 months 18 days
Gross Intangible Asset	$ 5,281	$ 5,281
Accumulated Amortization	1,520	368
Net Intangible Asset	$ 3,761	$ 4,913

Intangible Assets and Goodwil77

Intangible Assets and Goodwill - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 856	$ 95	$ 1,834	$ 190
Amortization Of Intangible Assets Occupancy And Equipment And Other Income
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			$ 2,180	$ 190

Intangible Assets and Goodwil78

Intangible Assets and Goodwill Intangible Assets and Goodwill - Goodwill Rollforward (Details) - USD ($) $ in Thousands	6 Months Ended	8 Months Ended
	Jun. 30, 2018	Mar. 31, 2018
Goodwill [Roll Forward]
Beginning of period	$ 159,452
End of period	161,447
Sovereign Bancshares, Inc.
Goodwill [Roll Forward]
Effect of acquisitions	2,210	$ 2,210
End of period		$ 111,301
Liberty Bancshares, Inc.
Goodwill [Roll Forward]
Effect of acquisitions	(215)
End of period	$ 23,281

Branch Assets and Liabilities79

Branch Assets and Liabilities Held For Sale (Details) - USD ($) $ in Thousands	Jan. 01, 2018	Mar. 31, 2018	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to acquire businesses, net of cash acquired			$ 33,557	$ 0
Deposits			2,490,418		$ 2,278,630
Total assets			1,753		33,552
Total liabilities			0		64,627
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Payments to acquire businesses, net of cash acquired		$ 33,557
Deposits		$ 1,000
Disposal group, not discontinued operation, gain (loss) on disposal	$ 355
Disposal Group, Held-for-sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents			0		334
Loans			0		26,313
Accrued interest receivable			0		63
Bank premises, furniture and equipment			1,753		5,118
Intangible assets			0		1,724
Total assets			1,753		33,552
Deposits			0		64,282
Accounts payable and accrued expenses			0		2
Deferred tax liability			0		327
Accrued interest payable and other liabilities			0		16
Total liabilities			$ 0		$ 64,627

Subsequent Events (Details)

Subsequent Events (Details) - Scenario, Forecast - Green Bank - Subsequent Event $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2019USD ($)$ / shares
Subsequent Event [Line Items]
Total fair value of consideration | $	$ 1,000,000
Business combination, common share conversion ratio | $ / shares	$ 0.79