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Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2017	Oct. 25, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	Veritex Holdings, Inc.
Entity Central Index Key	0001501570
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		22,648,718
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q3

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 21,879	$ 15,631
Interest bearing deposits in other banks	129,497	219,160
Total cash and cash equivalents	151,376	234,791
Investment securities	204,788	102,559
Loans held for sale	2,179	5,208
Loans, net of allowance for loan losses of $10,492 and $8,524, respectively	1,896,989	983,318
Accrued interest receivable	6,387	2,907
Bank-owned life insurance	20,517	20,077
Bank premises, furniture and equipment, net	40,129	17,413
Non-marketable equity securities	10,283	7,366
Investment in unconsolidated subsidiary	352	93
Other real estate owned	738	662
Intangible assets, net of accumulated amortization of $2,783 and $2,198, respectively	10,531	2,181
Goodwill	135,832	26,865
Other assets	14,760	5,067
Total assets	2,494,861	1,408,507
Deposits:
Noninterest-bearing	495,627	327,614
Interest-bearing	1,490,031	792,016
Total deposits	1,985,658	1,119,630
Accounts payable and accrued expenses	4,017	2,914
Accrued interest payable and other liabilities	4,368	534
Advances from Federal Home Loan Bank	38,200	38,306
Junior subordinated debentures	11,702	3,093
Subordinated notes	4,987	4,942
Total liabilities	2,048,932	1,169,419
Commitments and contingencies (Note 6)
Stockholders’ equity:
Common stock, $0.01 par value; 75,000,000 shares authorized at September 30, 2017 and December 31, 2016; 22,643,713 and 15,195,328 shares issued and outstanding at September 30, 2017 and December 31, 2016, respectively (excluding 10,000 shares held in treasury)	227	152
Additional paid-in capital	404,900	211,173
Retained earnings	41,143	29,290
Unallocated Employee Stock Ownership Plan shares; 18,783 shares at September 30, 2017 and December 31, 2016	(209)	(209)
Accumulated other comprehensive loss	(62)	(1,248)
Treasury stock, 10,000 shares at cost	(70)	(70)
Total stockholders’ equity	445,929	239,088
Total liabilities and stockholders’ equity	$ 2,494,861	$ 1,408,507

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Allowance for loan losses	$ 10,492	$ 8,524
Intangible assets, accumulated amortization	$ 2,783	$ 2,198
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)	22,643,713	15,195,328
Common stock, shares outstanding (in shares)	22,643,713	15,195,328
Unallocated Employee Stock Ownership Plan shares, shares (in shares)	18,783	18,783
Treasury stock, shares (in shares)	10,000	10,000

Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Interest and fees on loans	$ 20,706	$ 11,589	$ 45,613	$ 32,996
Interest on investment securities	941	335	2,251	1,014
Interest on deposits in other banks	629	129	1,787	302
Interest on other	3	1	4	2
Total interest income	22,279	12,054	49,655	34,314
Interest expense:
Interest on deposit accounts	2,812	1,381	6,201	3,388
Interest on borrowings	338	156	696	491
Total interest expense	3,150	1,537	6,897	3,879
Net interest income	19,129	10,517	42,758	30,435
Provision for loan losses	752	238	2,585	1,610
Net interest income after provision for loan losses	18,377	10,279	40,173	28,825
Noninterest income:
Service charges and fees on deposit accounts	669	433	1,733	1,309
Gain on sales of investment securities	205	0	205	15
Net gain on sales of loans and other assets owned	705	1,036	2,259	2,318
Bank-owned life insurance	188	193	561	577
Other	210	231	520	460
Total noninterest income	1,977	1,893	5,278	4,679
Noninterest expense:
Salaries and employee benefits	5,921	3,920	13,471	10,683
Occupancy and equipment	1,596	923	3,622	2,718
Professional fees	1,973	785	3,959	1,861
Data processing and software expense	719	296	1,451	850
FDIC assessment fees	410	179	1,061	447
Marketing	436	293	905	704
Other assets owned expenses and write-downs	71	9	109	139
Amortization of intangibles	223	95	413	285
Telephone and communications	230	98	438	295
Other	943	431	2,325	1,323
Total noninterest expense	12,522	7,029	27,754	19,305
Net income from operations	7,832	5,143	17,697	14,199
Income tax expense	2,650	1,768	5,802	4,837
Net income	5,182	3,375	11,895	9,362
Preferred stock dividends	42	0	42	0
Net income available to common stockholders	$ 5,140	$ 3,375	$ 11,853	$ 9,362
Basic earnings per share (in dollars per share)	$ 0.26	$ 0.32	$ 0.70	$ 0.88
Diluted earnings per share (in dollars per share)	$ 0.25	$ 0.31	$ 0.69	$ 0.85

Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 5,182	$ 3,375	$ 11,895	$ 9,362
Other comprehensive income:
Unrealized gains (losses) on securities available for sale arising during the period, net	378	(9)	2,000	653
Reclassification adjustment for net gains included in net income	205	0	205	15
Other comprehensive income (loss) before tax	173	(9)	1,795	638
Income tax expense (benefit)	60	(3)	609	217
Other comprehensive income (loss), net of tax	113	(6)	1,186	421
Comprehensive income	$ 5,295	$ 3,369	$ 13,081	$ 9,783

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	Series D Preferred Stock	Series D Preferred Stock Additional Paid-In Capital
Beginning balance (in shares) at Dec. 31, 2015		10,712,472
Beginning balance at Dec. 31, 2015	$ 132,046	$ 107	$ 115,721	$ 16,739	$ (142)	$ (309)	$ (70)
Increase (Decrease) in Stockholders' Equity
Restricted stock units vested, net of 7,667 and 6,398 shares withheld to cover tax withholdings for September 30, 2017 and 2016, respectively (in shares)		23,565
Restricted stock units vested, net of 7,667 and 6,398 shares withheld to cover tax withholdings September 30, 2017 and 2016, respectively	(108)		(108)
Stock based compensation	702		702
Net income	9,362			9,362
Other comprehensive income	421				421
Ending balance (in shares) at Sep. 30, 2016		10,736,037
Ending balance at Sep. 30, 2016	$ 142,423	$ 107	116,315	26,101	279	(309)	(70)
Beginning balance (in shares) at Dec. 31, 2016	15,195,328	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 7,667 and 6,398 shares withheld to cover tax withholdings for September 30, 2017 and 2016, respectively (in shares)		27,744
Restricted stock units vested, net of 7,667 and 6,398 shares withheld to cover tax withholdings September 30, 2017 and 2016, respectively	(206)		(206)
Exercise of employee stock options (in shares)		17,949
Exercise of employee stock options, net of 1,095 shares withheld to cover tax withholdings	169		169
Issuance of common stock for acquisition of Sovereign Bancshares, Inc., net of offering costs of $426 (in shares)		5,117,642
Issuance of common stock for acquisition of Sovereign Bancshares, Inc., net of offering costs of $426	135,959	$ 51	135,908
Sale of common stock in public offering, net of offering costs of $304 (in shares)		2,285,050
Stock issued during the period, value	56,681	$ 24	56,657					$ 24,500	$ 24,500
Redemption of preferred stock, series D								$ (24,500)	$ (24,500)
Stock based compensation	1,199		1,199
Net income	11,895			11,895
Preferred stock, series D dividend	(42)			(42)
Other comprehensive income	$ 1,186				1,186
Ending balance (in shares) at Sep. 30, 2017	22,643,713	22,643,713
Ending balance at Sep. 30, 2017	$ 445,929	$ 227	$ 404,900	$ 41,143	$ (62)	$ (209)	$ (70)

Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Shares withheld to cover tax withholdings		6,398
Sovereign Bancshares, Inc.
Stock issuance costs	$ 426
Public Offering
Stock issuance costs	$ 304
Restricted stock units
Shares withheld to cover tax withholdings	7,667
Employee Stock Options
Shares withheld to cover tax withholdings	1,095

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income	$ 11,895	$ 9,362
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,588	1,212
Provision for loan losses	2,585	1,610
Accretion of loan purchase discount	(828)	(363)
Stock-based compensation expense	1,199	702
Excess tax benefit from stock compensation	(233)	0
Net amortization of premiums on investment securities	1,217	710
Change in cash surrender value of bank-owned life insurance	(440)	(463)
Net gain on sales of investment securities	(205)	(15)
Gain on sales of loans held for sale	(705)	(2,318)
Gain on sales of SBA loans	(1,562)	0
Net loss on sales of other real estate owned	8	0
Amortization of subordinated note discount	45	1
Net originations of loans held for sale	(30,975)	(50,673)
Proceeds from sales of loans held for sale	34,709	49,708
Write down on foreclosed assets	37	114
Increase in accrued interest receivable and other assets	(312)	(1,410)
(Decrease) increase in accounts payable, accrued expenses, accrued interest payable and other liabilities	(1,683)	339
Net cash provided by operating activities	16,340	8,516
Cash flows from investing activities:
Cash paid in excess of cash received for the acquisition of Sovereign Bancshares, Inc.	(11,440)	0
Purchases of securities available for sale	(70,621)	(34,420)
Sales of securities available for sale	118,165	8,378
Proceeds from maturities, calls and pay downs of investment securities	17,317	15,026
Sales of non-marketable equity securities, net	3,834	(3,191)
Net loans originated	(187,283)	(105,098)
Proceeds from sale of SBA loans	24,273	0
Net additions to bank premises and equipment	(2,208)	(879)
Proceeds from sales of other real estate owned	161	0
Net cash used in investing activities	(107,802)	(120,184)
Cash flows from financing activities:
Net change in deposits	56,662	208,807
Net (decrease) increase in advances from Federal Home Loan Bank	(80,106)	9,897
Net proceeds from sale of common stock in public offering	56,681	0
Redemption of preferred stock - series D	(24,500)	0
Dividends paid on preferred stock - series D	(227)	0
Proceeds from exercise of employee stock options	175	0
Payments to tax authorities for stock-based compensation	(212)	0
Offering costs paid in connection with acquisition	(426)	0
Net cash provided by financing activities	8,047	218,704
Net (decrease) increase in cash and cash equivalents	(83,415)	107,036
Cash and cash equivalents at beginning of period	234,791	71,551
Cash and cash equivalents at end of period	$ 151,376	$ 178,587

Summary of Significant Accounting Policies

9 Months Ended

Sep. 30, 2017

Accounting Policies [Abstract]

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, formerly known as Veritex Community Bank, National Association (the “Bank”), is a Texas state banking organization, with corporate offices in Dallas, Texas, and currently operates 21 branches and one mortgage office, 17 of which are located in the Dallas-Fort Worth metroplex, with two branches in the Austin, Texas metropolitan area and two branches in the Houston, Texas 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. 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 September 30, 2017 and December 31, 2016, condensed consolidated results of operations for the three and nine months ended September 30, 2017 and 2016, condensed consolidated stockholders’ equity for the nine months ended September 30, 2017 and 2016 and condensed consolidated cash flows for the nine months ended September 30, 2017 and 2016.

Accounting measurements at interim dates inherently involve greater reliance on estimates than at year end and the results for the interim periods shown in this report 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, 2016 included within the Company’s Form 10-K as filed with the Securities and Exchange Commission on March 10, 2017.

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 on the other 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 interest rate and credit risk. Accordingly, all significant operating decisions are based upon analysis of the Company as one segment or unit. The Company’s chief operating decision-maker, the CEO, uses the consolidated results to make operating and strategic decisions.

Reclassifications

Effective January 1, 2017, the Company adopted ASU 2016-09. Per ASU 2016-09 cash paid by an employer when directly withholding shares for tax-withholding purposes should be classified as a financing activity and for presentation purposes be applied retrospectively.

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 nine months ended September 30, 2017 and 2016:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Earnings (numerator)
Net income	$	5,182	$	3,375	$	11,895	$	9,362
Less: preferred stock dividends	42		—		42		—
Net income available to common stockholders	$	5,140	$	3,375	$	11,853	$	9,362
Shares (denominator)
Weighted average shares outstanding for basic EPS (thousands)	19,976		10,705		16,813		10,698
Dilutive effect of employee stock-based awards	416		320		419		294
Adjusted weighted average shares outstanding	20,392		11,025		17,232		10,992
Earnings per share:
Basic	$	0.26	$	0.32	$	0.70	$	0.88
Diluted	$	0.25	$	0.31	$	0.69	$	0.85

For the three and nine months ended September 30, 2017 and 2016, there were no exclusions from the diluted EPS weighted average shares.

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 2017-01 “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”) changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities is deemed to be a business. Determining whether a transferred set constitutes a business is important because the accounting for a business combination differs from that of an asset acquisition. The definition of a business also affects the accounting for dispositions. Under the new standard, when substantially all of the fair value of assets acquired is concentrated in a single asset, or a group of similar assets, the assets acquired would not represent a business and business combination accounting would not be required. The new standard may result in more transactions being accounted for as asset acquisitions rather than business combinations. For public companies, ASU 2017-01 is effective for interim and annual periods beginning after December 15, 2017 and shall be applied prospectively. The Company early adopted ASU 2017-01 as of July 1, 2017, which had no significant impact on the Company's financial statements as of and for the three and nine months ended September 31, 2017.

ASU 2016-18 “Statement of Cash Flows (Topic 230): Restricted Cash” (“ASU 2016-18”) requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. For public companies, ASU 2016-18 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. 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. This Accounting Standards Update affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities, this ASU 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 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 2016-01 “Financial Instruments─Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”) 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. This update will be effective for the Company on January 1, 2018. 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 2014-09 “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 establishes a five-step model which entities must follow to recognize revenue and removes inconsistencies and weaknesses in existing guidance. The original effective date for ASU 2014-09 was for annual and interim periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which deferred the effective date by one year, therefore it is now effective for interim and annual reporting periods beginning after December 15, 2017. The Company will adopt the guidance in the first quarter of 2018 using the modified retrospective application with a cumulative-effect adjustment, if such adjustment is significant. While the guidance will replace most existing revenue recognition guidance in GAAP, the ASU is not applicable to financial instruments and, therefore, will not impact a majority of the Company’s revenue, including net interest income. Our implementation efforts to date include identification of non-interest income revenue streams within the scope of the guidance and review of revenue contracts. Based on our evaluation, the Company does not believe the adoption of ASU 2014-09 will have a significant impact on our financial statements.

Statement of Cash Flows

9 Months Ended

Sep. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Statement of Cash Flows

Other supplemental cash flow information is presented below:



	Nine Months Ended September 30,
	2017		2016
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$	6,714	$	3,858
Cash paid for income taxes	6,025		6,100
Supplemental Disclosures of Non-Cash Flow Information:
Net foreclosure of other real estate owned and repossessed assets	$	—	$	283
Non-cash assets acquired
Investment securities	$	166,307	$	—
Loans	750,856		—
Accrued interest receivable	3,437		—
Bank premises, furniture and equipment	21,512		—
Non-marketable equity securities	6,751		—
Other real estate owned	282		—
Intangible assets	8,662		—
Goodwill	108,967		—
Other assets	10,331		—
Total assets	$	1,077,105	$	—
Non-cash liabilities assumed
Deposits	$	809,366	$	—
Accounts payable and accrued expenses⁽¹⁾	5,189		—
Accrued interest payable and other liabilities	1,616		—
Advances from Federal Home Loan Bank	80,000		—
Junior subordinated debentures	8,609		—
Total liabilities	$	904,780	$	—
Non-cash equity assumed
Preferred stock - series D	24,500		—
Total equity assumed	$	24,500	$	—
5,117,642 shares of common stock issued in connection with acquisition	$	136,385	$	—

⁽¹⁾ Accounts payable and accrued expenses includes accrued preferred stock dividends of $185.

Investment Securities

9 Months Ended

Sep. 30, 2017

Investments, Debt and Equity Securities [Abstract]

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 income (loss), and the fair value of securities are as follows:



	September 30, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available for Sale
U.S. government agencies	$	10,827	$	92	$	11	$	10,908
Corporate bonds	7,500		330		—		$	7,830
Municipal securities	52,392		269		141		52,520
Mortgage-backed securities	81,454		98		447		81,105
Collateralized mortgage obligations	52,062		99		395		51,766
Asset-backed securities	649		10		—		659
	$	204,884	$	898	$	994	$	204,788



	December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available for Sale
U.S. government agencies	$	732	$	—	$	36	$	696
Municipal securities	14,540		2		500		14,042
Mortgage-backed securities	49,907		83		871		49,119
Collateralized mortgage obligations	38,507		32		612		37,927
Asset-backed securities	764		11		—		775
	$	104,450	$	128	$	2,019	$	102,559

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:



	September 30, 2017
	Less Than 12 Months				12 Months or More				Totals
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for Sale
U.S. government agencies	$	—	$	—	$	633	$	11	$	633	$	11
Municipal securities	7,059		76		5,118		65		12,177		141
Mortgage-backed securities	54,852		398		4,029		49		58,881		447
Collateralized mortgage obligations	32,784		372		1,412		23		34,196		395
	$	94,695	$	846	$	11,192	$	148	$	105,887	$	994



	December 31, 2016
	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	$	—	$	—	$	696	$	36	$	696	$	36
Municipal securities	12,060		478		518		22		12,578		500
Mortgage-backed securities	37,274		802		6,848		69		44,122		871
Collateralized mortgage obligations	29,618		584		1,618		28		31,236		612
	$	78,952	$	1,864	$	9,680	$	155	$	88,632	$	2,019

The number of investment positions in an unrealized loss position totaled 79 and 72 at September 30, 2017 and December 31, 2016, respectively. The Company does not believe these unrealized losses are “other than temporary” as (i) the Company does not have the intent to sell investment securities prior to recovery and (ii) it is more likely than not that the Company will not have to sell these securities prior to recovery. The unrealized losses noted are interest rate related due to the level of interest rates at September 30, 2017. 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.



	September 30, 2017
	Available For Sale
	Amortized Cost		Fair Value
Due in one year or less	$	—	$	—
Due from one year to five years	27,145		27,649
Due from five years to ten years	24,408		24,432
Due after ten years	19,166		19,177
	70,719		71,258
Mortgage-backed securities	81,454		81,105
Collateralized mortgage obligations	52,062		51,766
Asset-backed securities	649		659
	$	204,884	$	204,788



	December 31, 2016
	Available For Sale
	Amortized Cost		Fair Value
Due in one year or less	$	—	$	—
Due from one year to five years	4,009		3,974
Due from five years to ten years	3,522		3,346
Due after ten years	7,741		7,418
	15,272		14,738
Mortgage-backed securities	49,907		49,119
Collateralized mortgage obligations	38,507		37,927
Asset-backed securities	764		775
	$	104,450	$	102,559

Proceeds from sales of investment securities available for sale and gross gains and losses for the nine months ended September 30, 2017 and 2016 were as follows:



	Nine Months Ended September 30,
	2017		2016
Proceeds from sales	$	118,165	$	8,378
Gross realized gains	335		43
Gross realized losses	130		40

There were no gross gains from calls of investment securities included in gain on sale of investment securities in the accompanying condensed consolidated statements for the nine months ended September 30, 2017 and $12 gross gains from calls of investment securities included in the condensed consolidated statements for the nine months ended September 30, 2016.

There was a blanket floating lien on all securities held by the Company to secure Federal Home Loan Bank advances as of September 30, 2017 and December 31, 2016.

- Definition

The entire disclosure for investments in certain debt and equity securities.

+ References + Details

Loans and Allowance for Loan Losses

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Loans and Allowance for Loan Losses

Loans in the accompanying condensed consolidated balance sheets are summarized as follows:



	September 30, 2017			December 31, 2016
Real estate:
Construction and land	$	276,670		$	162,614
Farmland	6,572			8,262
1 - 4 family residential	185,473			140,137
Multi-family residential	54,475			14,683
Commercial Real Estate	802,432			370,696
Commercial	577,758			291,416
Consumer	4,129			4,089
	1,907,509			991,897
Deferred loan fees	(28		)	(55		)
Allowance for loan losses	(10,492		)	(8,524		)
	$	1,896,989		$	983,318

Included in the net loan portfolio as of September 30, 2017 and December 31, 2016 is an accretable discount related to loans acquired within a business combination in the approximate amounts of $6,432 and $566, respectively. The discount is being accreted into income using the interest method over the life of the loans.

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 September 30, 2017 and December 31, 2016.

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 the accrual of interest 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 September 30, 2017 and December 31, 2016, are as follows:



	Non-Accrual Loans
	September 30, 2017 ⁽¹⁾		December 31, 2016
Real estate:
Construction and land	$	—	$	—
Farmland	—		—
1 - 4 family residential	—		—
Multi-family residential	—		—
Commercial Real Estate	794		—
Commercial	1,048		930
Consumer	14		11
	$	1,856	$	941

⁽¹⁾Excludes purchased credit impaired (“PCI”) loans measured at fair value at September 30, 2017. 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. The fair value on these PCI loans are subject to change based on management finalizing its purchase accounting adjustments.

An aging analysis of past due loans, aggregated by class of loans, as of September 30, 2017 and December 31, 2016 is as follows:



	September 30, 2017
	30 to 59 Days		60 to 89 Days		90 Days or Greater		Total Past Due		Total Current ⁽¹⁾		Total Loans		Total 90 Days Past Due and Still Accruing⁽²⁾
Real estate:
Construction and land	$	—	$	—	$	—	$	—	$	276,670	$	276,670	$	—
Farmland	—		—		—		—		6,572		6,572		—
1 - 4 family residential	366		—		54		420		185,053		185,473		54
Multi-family residential	—		—		—		—		54,475		54,475		—
Commercial Real Estate	66		—		727		793		801,639		802,432		—
Commercial	2,138		447		1,037		3,622		574,136		577,758
Consumer	27		15		6		48		4,081		4,129		—
	$	2,597	$	462	$	1,824	$	4,883	$	1,902,626	$	1,907,509	$	54

⁽¹⁾ Includes PCI loans measured at fair value as of September 30, 2017. The fair value on these PCI loans are subject to change based on management finalizing its purchase accounting adjustments.

⁽²⁾ Loans 90 days past due and still accruing excludes $3.3 million of PCI loans as of September 30, 2017. No PCI loans were considered non-performing loans as of September 30, 2017.



	December 31, 2016
	30 to 59 Days		60 to 89 Days		90 Days or Greater		Total Past Due		Total Current		Total Loans		Total 90 Days Past Due and Still Accruing
Real estate:
Construction and land	$	1,047	$	—	$	—	$	1,047	$	161,567	$	162,614	$	—
Farmland	—		—		—		—		8,262		8,262		—
1 - 4 family residential	510		214		—		724		139,413		140,137		—
Multi-family residential	—		—		—		—		14,683		14,683		—
Commercial Real Estate	—		—		754		754		369,942		370,696		754
Commercial	1,344		438		532		2,314		289,102		291,416		81
Consumer	41		—		—		41		4,048		4,089		—
	$	2,942	$	652	$	1,286	$	4,880	$	987,017	$	991,897	$	835

Loans past due 90 days and still accruing decreased from $835 as of December 31, 2016 to $54 as of September 30, 2017. 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, including TDRs, at September 30, 2017 and December 31, 2016 are summarized in the following tables.



	September 30, 2017 ⁽¹⁾
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment With Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment YTD
Real estate:
Construction and land	$	—	$	—	$	—	$	—	$	—	$	—
Farmland	—		—		—		—		—		—
1 - 4 family residential	162		162		—		162		—		191
Multi-family residential	—		—		—		—		—		—
Commercial Real Estate	1,169		1,169		—		1,169		—		1,191
Commercial	1,071		855		216		1,071		156		1,122
Consumer	83		83		—		83		—		94
Total	$	2,485	$	2,269	$	216	$	2,485	$	156	$	2,598

⁽¹⁾Excludes PCI loans measured at fair value at September 30, 2017 that have not experienced further deterioration in credit quality subsequent to the acquisition date. The fair value on these PCI loans are subject to change based on management finalizing its purchase accounting adjustments.



	December 31, 2016
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment With Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment YTD
Real estate:
Construction and land	$	—	$	—	$	—	$	—	$	—	$	—
Farmland	—		—		—		—		—		—
1 - 4 family residential	164		164		—		164		—		265
Multi-family residential	—		—		—		—		—		—
Commercial Real Estate	382		382		—		382		—		440
Commercial	955		381		574		955		246		463
Consumer	92		81		11		92		4		12
Total	$	1,593	$	1,008	$	585	$	1,593	$	250	$	1,180

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 nine months ended September 30, 2017 and 2016, 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 $626 and $822 as of September 30, 2017 and December 31, 2016, respectively.

There were no loans restructured during the nine months ended September 30, 2017 and two loans restructured during the nine months ended September 30, 2016. The terms of certain loans modified as TDRs during the nine months ended September 30, 2016 are summarized in the following table:



				During the nine months ended September 30, 2016
				Post-Modification Outstanding Recorded Investment
	Number of Loans	Pre- Modification Outstanding Recorded Investment		Adjusted Interest Rate		Extended Maturity		Extended Maturity and Restructured Payments		Extended Maturity, Restructured Payments and Adjusted Interest Rate
Real estate loans:
Construction and land	—	$	—	$	—	$	—	$	—	$	—
Farmland	—	—		—		—		—		—
1 - 4 family residential	—	—		—		—		—		—
Multi-family residential	—	—		—		—		—		—
Nonfarm nonresidential	—	—		—		—		—		—
Commercial	2	175		—		—		169		—
Consumer	—	—		—		—		—		—
Total	2	$	175	$	—	$	—	$	169	$	—

The two loans restructured during the nine months ended September 30, 2016 were performing as agreed to the modified terms. A specific allowance of $38 for loan losses was recorded for one of the loans that were modified during the nine months ended September 30, 2016.

There were no loans modified as TDR loans within the previous 12 months and for which there was a payment default during the nine months ended September 30, 2017 and 2016. 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.

The Company has not committed to lend additional amounts to customers with outstanding loans classified as TDRs as of September 30, 2017 or December 31, 2016.

Credit Quality Indicators

From a credit risk standpoint, the Company classifies its non-PCI loans in the following categories: (i) pass, (ii) special mention, (iii) substandard or (iv) doubtful. Non-PCI loans classified as loss are charged-off.

The classifications of loans reflect a judgment by management 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 believed to be inherent in each credit as of each monthly reporting period. All classified credits are evaluated for impairments. 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 rated more harshly.

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 the 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 purchased credit impaired 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 purchased credit impaired loans, as of September 30, 2017 and December 31, 2016:



	September 30, 2017
	Pass		Special Mention		Substandard		Doubtful		PCI⁽¹⁾		Total
Real estate:
Construction and land	$	276,060	$	610	$	—	$	—	—		$	276,670
Farmland	6,572		—		—		—		—		6,572
1 - 4 family residential	185,216		—		257		—		—		185,473
Multi-family residential	54,475		—		—		—		—		54,475
Commercial Real Estate	775,129		8,142		13,403		—		5,758		802,432
Commercial	528,803		16,328		6,065		116		26,446		577,758
Consumer	4,043		—		86		—		—		4,129
Total	$	1,830,298	$	25,080	$	19,811	$	116	$	32,204	$	1,907,509

⁽¹⁾Management is continuing to evaluate the fair value of Sovereign acquired PCI loans. The fair value on these PCI loans are subject to change based on management finalizing its purchase accounting adjustments.



	December 31, 2016
	Pass		Special Mention		Substandard		Doubtful		Total
Real estate:
Construction and land	$	162,614	$	—	$	—	$	—	$	162,614
Farmland	8,262		—		—		—		8,262
1 - 4 family residential	139,212		710		215		—		140,137
Multi-family residential	14,683		—		—		—		14,683
Commercial Real Estate	368,370		2,326		—		—		370,696
Commercial	289,589		686		1,034		107		291,416
Consumer	4,078		—		11		—		4,089
Total	$	986,808	$	3,722	$	1,260	$	107	$	991,897

An analysis of the allowance for loan losses for the nine months ended September 30, 2017 and 2016 and year ended December 31, 2016 is as follows:



	Nine Months Ended September 30, 2017			Year Ended December 31, 2016			Nine Months Ended September 30, 2016
Balance at beginning of year	$	8,524		$	6,772		$	6,772
Provision charged to earnings	2,585			2,050			1,610
Charge-offs	(622		)	(333		)	(309		)
Recoveries	5			35			29
Net charge-offs	(617		)	(298		)	(280		)
Balance at end of year	$	10,492		$	8,524		$	8,102

The allowance for loan losses as a percentage of total loans was 0.55%, 0.86% and 0.87% as of September 30, 2017, December 31, 2016, and September 30, 2016, respectively.

The following tables summarize the activity in the allowance for loan losses by portfolio segment for the periods indicated:



	For the Nine Months Ended September 30, 2017
	Real Estate
	Construction, Land and Farmland			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	(252		)	415			973		1,462			(13		)	2,585
Charge-offs	—			(11		)	—		(611		)	—			(622		)
Recoveries	—			—			—		5			—			5
Net charge-offs (recoveries)	—			(11		)	—		(606		)	—			(617		)
Balance at end of period	$	1,163		$	1,520		$	3,976	$	3,811		$	22		$	10,492
Period-end amount allocated to:
Specific reserves:
Impaired loans	$	—		$	—		$	—	$	156		$	—		$	156
Total specific reserves	—			—			—		156			—			156
General reserves	1,163			1,520			3,976		3,655			22			10,336
Total	$	1,163		$	1,520		$	3,976	$	3,811		$	22		$	10,492



	For the Year Ended December 31, 2016
	Real Estate
	Construction, Land and Farmland		Residential			Commercial Real Estate		Commercial			Consumer			Total
Balance at beginning of period	$	1,104	$	1,124		$	2,189	$	2,324		$	31		$	6,772
Provision (recapture) charged to earnings	311		(8		)	814		913			20			2,050
Charge-offs	—		—			—		(314		)	(19		)	(333		)
Recoveries	—		—			—		32			3			35
Net charge-offs (recoveries)	—		—			—		(282		)	(16		)	(298		)
Balance at end of period	$	1,415	$	1,116		$	3,003	$	2,955		$	35		$	8,524
Period-end amount allocated to:
Specific reserves:
Impaired loans	$	—	$	—		$	—	$	246		$	4		$	250
Total specific reserves	—		—			—		246			4			250
General reserves	1,415		1,116			3,003		2,709			31			8,274
Total	$	1,415	$	1,116		$	3,003	$	2,955		$	35		$	8,524



	For the Nine Months Ended September 30, 2016
	Real Estate
	Construction, Land and Farmland		Residential			Commercial Real Estate		Commercial			Consumer			Total
Balance at beginning of year	$	1,104	$	1,124		$	2,189	$	2,324		$	31		$	6,772
Provision (recapture) charged to earnings	368		(38		)	532		741			7			1,610
Charge-offs	—		—			—		(300		)	(9		)	(309		)
Recoveries	—		—			—		28			1			29
Net charge-offs (recoveries)	—		—			—		(272		)	(8		)	(280		)
Balance at end of year	$	1,472	$	1,086		$	2,721	$	2,793		$	30		$	8,102
Period-end amount allocated to:
Specific reserves:
Impaired loans	$	—	$	—		$	—	$	221		$	4		$	225
Total specific reserves	—		—			—		221			4			225
General reserves	1,472		1,086			2,721		2,572			26			7,877
Total	$	1,472	$	1,086		$	2,721	$	2,793		$	30		$	8,102

The Company’s recorded investment in loans as of September 30, 2017 and December 31, 2016 related to the balance in the allowance for loan losses on the basis of the Company’s impairment methodology is as follows:



	September 30, 2017
	Real Estate
	Construction, Land and Farmland		Residential		Commercial Real Estate		Commercial		Consumer		Total
Loans individually evaluated for impairment	$	—	$	162	$	1,169	$	1,071	$	83	$	2,485
Loans collectively evaluated for impairment	283,242		239,786		795,505		550,241		4,046		$	1,872,820
PCI loans	—		—		5,758		26,446		—		32,204
Total	$	283,242	$	239,948	$	802,432	$	577,758	$	4,129	$	1,907,509



	December 31, 2016
	Real Estate
	Construction, Land and Farmland		Residential		Commercial Real Estate		Commercial		Consumer		Total
Loans individually evaluated for impairment	$	—	$	164	$	382	$	955	$	92	$	1,593
Loans collectively evaluated for impairment	170,876		154,656		370,314		290,461		3,997		990,304
PCI loans	—		—		—		—		—		—
Total	$	170,876	$	154,820	$	370,696	$	291,416	$	4,089	$	991,897

The Company has acquired certain loans which experienced credit deterioration since origination which are PCI loans. Accretion on PCI loans is based on estimated future cash flows, regardless of contractual maturity.

Servicing Assets

At September 30, 2017, the Company was servicing loans of approximately $70,392. A summary of the changes in the related servicing assets are as follows:



	Nine Months Ended September 30,
	2017			2016
Balance at beginning of year	$	601		$	426
Servicing asset acquired through acquisition	454			—
Increase from loan sales	273			231
Amortization charged to income	(130		)	(81		)
Balance at end of period	$	1,198		$	576

The estimated fair value of the servicing assets approximated the carrying amount at September 30, 2017, December 31, 2016, and September 30, 2016. 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. At September 30, 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 September 30, 2017 and December 31, 2016.

- Definition

The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses.

+ References + Details

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company’s estimated annual effective tax rate, before the net impact of discrete items, was approximately 34.4% and 34.2% for the nine months ended September 30, 2017 and 2016, respectively. The Company’s effective tax rate, after including the net impact of discrete tax items, was approximately 32.8% and 34.1%, respectively, for the nine months ended September 30, 2017 and 2016. The Company’s provision was impacted by a net discrete tax benefit of $285 primarily associated with the recognition of excess tax benefit on share-based payment awards for the nine months ended September 30, 2017. The Company’s estimated annual effective tax rate, before the net impact of discrete items, was approximately 34.2% and 34.4% for the three months ended September 30, 2017 and 2016, respectively. The Company’s effective tax rate, after including the net impact of discrete tax items, was approximately 33.8% and 34.4%, respectively, for the three months ended September 30, 2017 and 2016. The Company’s provision was impacted by a net discrete tax benefit of $30 primarily associated with the recognition of excess tax benefit on share-based payment awards for the three months ended September 30, 2017. Deferred income taxes reflect the net tax effects of temporary differences between the recorded amounts of assets and liabilities for financial reporting purposes, and the amounts used for income tax purposes. Included in the accompanying condensed consolidated balance sheet as of September 30, 2017 is a current tax receivable of approximately $4,878 and a net deferred tax asset of approximately $7,566 in other assets. Included in the accompanying condensed consolidated balance sheets as of December 31, 2016 is a current tax receivable of $91 and a net deferred tax asset of $3,467 in other assets.

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 30, 2017
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. Operating Leases The Company leases several of its banking facilities under operating leases. Rental expense related to these leases was approximately $1,595 and $1,051 for the nine months ended September 30, 2017 and 2016, respectively. Qualified Affordable Housing Investment On July 26, 2017, the Company began investing in a qualified housing project. At September 30, 2017, the balance of the investment for qualified affordable housing projects was $1,991. This balance is reflected in non-marketable equity securities on the condensed consolidated balance sheets. The total unfunded commitment related to the investment in a qualified housing project totaled $1,875 at September 30, 2017. The Company expects to fulfill this commitment during the year ending 2031.

Fair Value Disclosures

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Disclosures

The authoritative guidance for fair value measurements 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 participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability shall not be adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact and (iv) willing to transact.

The authoritative guidance requires the use of valuation techniques that are consistent with the market approach, the income approach and/or the cost approach. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset (replacement costs). Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. In that regard, the authoritative guidance establishes a fair value hierarchy for valuation inputs that gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows:

Level 1 Inputs. Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2 Inputs. Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (for example, interest rates, volatilities, prepayment speeds, loss severities, credit risks and default rates) or inputs that are derived principally from or corroborated by observable market data by correlation or other means. Level 2 investments consist primarily of obligations of U.S. government sponsored enterprises and agencies, obligations of state and municipal subdivisions, corporate bonds, mortgage-backed securities, collateralized mortgage obligations, and asset-backed securities.

Level 3 Inputs. Significant unobservable inputs that reflect an entity’s own assumptions that market participants would use in pricing the assets or liabilities.

In general, fair value is based upon quoted market prices, where available. If such quoted market prices are not available, fair value is based upon internally developed models that primarily use, as inputs, observable market-based parameters. Valuation adjustments may be made to ensure that financial instruments are recorded at fair value. While management believes the Company’s valuation methodologies are appropriate and consistent with other market participants, the use of different methodologies or assumptions to determine the fair value of certain financial instruments could result in a different estimate of fair value at the reporting date.

A description of the valuation methodologies used for instruments measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below.

Assets and liabilities measured at fair value on a recurring basis include the following:

Investment Securities Available For Sale: Securities classified as available for sale are reported at fair value utilizing Level 2 inputs. For those securities classified as Level 2, the Company obtains fair value measurements from an independent pricing service. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U. S. Treasury yield curve, live trading levels or trade execution data for similar securities, market consensus prepayments speeds, credit information and the bond’s terms and conditions, among other things.

The following table summarizes assets measured at fair value on a recurring basis as of September 30, 2017 and December 31, 2016, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:



	Fair Value Measurements Using
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
As of September 30, 2017
Investment securities available for sale	$	—	$	204,788	$	—	$	204,788
As of December 31, 2016
Investment securities available for sale	$	—	$	102,559	$	—	$	102,559

There were no liabilities measured at fair value on a recurring basis as of September 30, 2017 or December 31, 2016.

There were no transfers between Level 2 and Level 3 during the nine months ended September 30, 2017 and 2016.

Certain assets and liabilities are measured at fair value on a non-recurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances (for example, when there is evidence of impairment).

Assets measured at fair value on a non-recurring basis include impaired loans and other real estate owned. The fair value of impaired loans with specific allocations of the allowance for loan losses and other real estate owned is based upon recent real estate appraisals less estimated costs of sale. For residential real estate impaired loans and other real estate owned, appraised values are based on the comparative sales approach. For commercial and commercial real estate impaired loans and other real estate owned, appraisers may use either a single valuation approach or a combination of approaches such as comparative sales, cost or the income approach. A significant unobservable input in the income approach is the estimated income capitalization rate for a given piece of collateral. Adjustments to appraisals may be made to reflect local market conditions or other economic factors and may result in changes in the fair value of a given asset over time. As such, the fair value of impaired loans and other real estate owned are considered a Level 3 in the fair value hierarchy.

The Company recovers the carrying value of other real estate owned through the sale of the property. The ability to affect future sales prices is subject to market conditions and factors beyond the Company’s control and may impact the estimated fair value of a property.

Appraisals for impaired loans and other real estate owned are performed by certified general appraisers whose qualifications and licenses have been reviewed and verified by the Company. Once reviewed, a member of the credit department reviews the assumptions and approaches utilized in the appraisal as well as the overall resulting fair value in comparisons to independent data sources such as recent market data or industry wide-statistics. On a periodic basis, the Company compares the actual selling price of collateral that has been sold to the most recent appraised value to determine what additional adjustments, if any, should be made to the appraisal value to arrive at fair value.

The following table summarizes assets measured at fair value on a non-recurring basis as of September 30, 2017 and December 31, 2016, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value:



	Fair Value Measurements Using
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
As of September 30, 2017
Assets:
Impaired loans	$	—	$	—	$	2,329	$	2,329
As of December 31, 2016
Assets:
Impaired loans	$	—	$	—	$	1,343	$	1,343

At September 30, 2017, impaired loans had a carrying value of $2,485, with $156 specific allowance for loan loss allocated.

At December 31, 2016, impaired loans had a carrying value of $1,593, with $250 specific allowance for loan loss allocated.

There were no liabilities measured at fair value on a non-recurring basis as of September 30, 2017 or December 31, 2016.

For Level 3 financial assets measured at fair value as of September 30, 2017 and December 31, 2016, the significant unobservable inputs used in the fair value measurements were as follows:



September 30, 2017
			Valuation	Unobservable	Weighted
Assets/Liabilities	Fair Value		Technique	Input(s)	Average
Impaired loans	$	2,329	Collateral Method	Adjustments for selling costs	8	%



December 31, 2016
			Valuation	Unobservable	Weighted
Assets/Liabilities	Fair Value		Technique	Input(s)	Average
Impaired loans	$	1,343	Collateral Method	Adjustments for selling costs	8	%

Fair Value of Financial Instruments

The Company is required under current authoritative guidance to disclose the estimated fair value of its financial instrument assets and liabilities including those subject to the requirements discussed above. For the Company, as for most financial institutions, substantially all of its assets and liabilities are considered financial instruments, as defined. Many of the Company’s financial instruments, however, lack an available trading market as characterized by a willing buyer and willing seller engaging in an exchange transaction.

The estimated fair value amounts of financial instruments have been determined by the Company using available market information and appropriate valuation methodologies. However, considerable judgment is required to interpret data to develop an estimate of fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts the Company could realize in a current market exchange. The use of different market assumptions and/or valuation methodologies may have a material effect on the estimated fair value amounts. In addition, reasonable comparability between financial institutions may not be likely due to the wide range of permitted valuation techniques and numerous estimates that must be made given the absence of active secondary markets for many of the financial instruments. This lack of uniform valuation methodologies also introduces a greater degree of subjectivity to these estimated fair values.

The methods and assumptions used by the Company in estimating fair values of financial instruments as disclosed herein in accordance with ASC Topic 825, Financial Instruments, other than for those measured at fair value on a recurring and nonrecurring basis discussed above, are as follows:

Cash and cash equivalents: The carrying amount of cash and cash equivalents approximates their fair value.

Loans and loans held for sale: For variable-rate loans that reprice frequently and have no significant changes in credit risk, fair values are based on carrying values. Fair values for certain mortgage loans (for example, 1-4 family residential), commercial real estate and commercial loans are estimated using discounted cash flow analysis, using interest rates currently being offered for loans with similar terms to borrowers of similar credit quality.

Accrued interest: The carrying amounts of accrued interest approximate their fair values due to short-term maturity.

Bank-owned life insurance: The carrying amounts of bank-owned life insurance approximate their fair value.

Servicing assets: The estimated fair value of the servicing assets approximated the carrying amount at September 30, 2017 and December 31, 2016. 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. At September 30, 2017 and December 31, 2016 no valuation allowance was recorded.

Non-marketable equity securities: The carrying value of restricted securities such as stock in the Federal Home Loan Bank of Dallas and Independent Bankers Financial Corporation approximates fair value.

Deposits: The fair values disclosed for demand deposits are, by definition, equal to the amount payable on demand at the reporting date (that is their carrying amounts). The carrying amounts of variable-rate certificates of deposit (“CDs”) approximate their fair values at the reporting date. Fair values for fixed-rate CDs are estimated using a discounted cash flow calculation that applies interest rates currently being offered on certificates to a schedule of aggregated expected monthly maturities on time deposits.

Advances from Federal Home Loan Bank: The fair value of advances maturing within 90 days approximates carrying value. Fair value of other advances is based on the Company’s current borrowing rate for similar arrangements.

Junior subordinated debentures and subordinated notes: The fair values are based upon prevailing rates on similar debt in the market place.

Off-balance sheet instruments: Commitments to extend credit and standby letters of credit are generally priced at market at the time of funding and were not material to the Company’s condensed consolidated financial statements.

The estimated fair values and carrying values of all financial instruments under current authoritative guidance as of September 30, 2017 and December 31, 2016 were as follows:



	September 30,				December 31,
	2017				2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and cash equivalents	$	151,376	$	151,376	$	234,791	$	234,791
Level 2 inputs:
Loans held for sale	2,179		2,179		5,208		5,208
Accrued interest receivable	6,387		6,387		2,907		2,907
Bank-owned life insurance	20,517		20,517		20,077		20,077
Servicing asset	1,198		1,198		601		601
Non-marketable equity securities	10,283		10,283		7,366		7,366
Level 3 inputs:
Loans, net	1,896,989		1,907,203		983,318		987,021
Financial liabilities:
Level 2 inputs:
Deposits	$	1,985,658	$	1,986,342	$	1,119,630	$	1,085,888
Advances from FHLB	38,200		38,244		38,306		38,570
Accrued interest payable	324		324		141		141
Junior subordinated debentures	11,702		11,702		3,093		3,093
Subordinated notes	4,987		4,987		4,942		4,942

- Definition

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

+ References + Details

Financial Instruments with Off-Balance Sheet Risk

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

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 September 30, 2017 and December 31, 2016:



	September 30,		December 31,
	2017		2016
Commitments to extend credit	$	545,999	$	236,919
Standby and commercial letters of credit	6,417		6,933
	$	552,416	$	243,852

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.

Employee Benefits

9 Months Ended

Sep. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Employee Benefits

Defined Contribution Plan

The Company maintains a retirement savings 401(k) profit sharing plan (“Plan”) in which substantially all employees may participate. The Plan provides for “before tax” employee contributions through salary reductions under section 401(k) of the Internal Revenue Code. The Company may make a discretionary match of employees’ contributions based on a percentage of salary deferrals and certain discretionary profit sharing contributions. No matching contributions to the Plan were made for the nine months ended September 30, 2017 and 2016.

ESOP

Effective January 1, 2012, the Company adopted the Veritex Community Bank Employee Stock Ownership Plan (“ESOP”) covering all employees that meet certain age and service requirements. Plan assets are held and managed by the Company. Shares of the Company’s common stock purchased by the ESOP are held in a suspense account until released for allocation to participants. Shares released are allocated to each eligible participant based on the participant’s 401(k) contribution made during that year. Compensation expense is measured based upon the expected amount of the Company’s discretionary contribution that is determined on an annual basis and is accrued ratably over the year. Shares are committed to be released to settle the liability upon formal declaration of the contribution at the end of the year. The number of shares released to settle the liability is based upon fair value of the shares and become outstanding shares for earnings per share computations. The cost of shares issued to the ESOP, but not yet committed to be released, is shown as a reduction of stockholders’ equity. To the extent that the fair value of the ESOP shares differs from the cost of such shares, the difference is charged or credited to stockholders’ equity as additional paid in capital.

In January 2014, the ESOP borrowed $500 from the Company and purchased 46,082 shares of the Company’s common stock. The ESOP debt is secured by shares of the Company. The loan will be repaid from contributions to the ESOP from the Company. As the debt is repaid, shares are released from collateral and allocated to employees’ accounts. The shares pledged as collateral are reported as unearned ESOP shares in the condensed consolidated balance sheets.

Compensation expense attributed to the ESOP contributions recorded in the accompanying condensed consolidated statements of income for the nine months ended September 30, 2017 and 2016 was approximately $171 and $143, respectively.

The following is a summary of ESOP shares as of September 30, 2017 and December 31, 2016:



	September 30,		December 31,
	2017		2016
Allocated shares	44,257		44,257
Unearned shares	18,783		18,783
Total ESOP shares	63,040		63,040
Fair value of unearned shares	$	506	$	502

Stock and Incentive Plan

9 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock and Incentive Plan

2010 Stock Option and Equity Incentive Plan

In 2010, the Company adopted the 2010 Stock Option and Equity Incentive Plan (the “2010 Incentive Plan”), which the Company’s shareholders approved in 2011. The maximum number of shares of common stock that may be issued pursuant to grants or options under the 2010 Incentive Plan is 1,000,000. The 2010 Incentive Plan is administered by the Board of Directors and provides for both the direct award of stock and the grant of stock options to eligible directors, officers, employees and outside consultants of the Company or its affiliates as defined in the 2010 Incentive Plan. The Company may grant either incentive stock options or nonqualified stock options as directed in the 2010 Incentive Plan.

The Board of Directors authorized the 2010 Incentive Plan to provide for the award of 100,000 shares of direct stock awards (restricted shares) and 900,000 shares of stock options, of which 500,000 shares are performance-based stock options. Options are generally granted with an exercise price equal to the market price of the Company’s stock at the date of the grant; those option awards generally vest based on 5 years of continuous service and have 10-year contractual terms for non-controlling participants as defined by the 2010 Incentive Plan, and forfeiture of unexercised options upon termination of employment with the Company. Other grant terms can vary for controlling participants as defined by the 2010 Incentive Plan. Restricted share awards generally vest after 4 years of continuous service. The terms of the Incentive Plan include a provision whereby all unearned non-performance options and restricted shares become immediately exercisable and fully vested upon a change in control.

With the adoption of the 2014 Omnibus Plan, which is discussed below, the Company does not plan to award any additional grants or options under the 2010 Incentive Plan.

During the nine months ended September 30, 2017 and 2016, 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 based compensation expense is measured based upon the fair market value of the award at the grant date and is recognized ratably over the period during which the shares are earned (the requisite service period). Stock compensation expense related to the 2010 Incentive Plan recognized in the accompanying condensed consolidated statements of income totaled $20 and $62 for the three and nine months ended September 30, 2017 and $29 and $86 for the three and nine months ended September 30, 2016, respectively.

A summary of option activity under the 2010 Incentive Plan for the nine months ended September 30, 2017 and 2016, and changes during the period then ended is presented below:



	For the Nine Months Ended September 30, 2017
	Non-performance-based Stock Options
	Shares Underlying Options		Weighted Exercise Price		Weighted Average Contractual Term
Outstanding at beginning of year	325,500		$	10.15	4.56 years
Granted during the period	—		—
Forfeited during the period	—		—
Canceled during the period	—		—
Exercised during the period	(17,500	)	10.00
Outstanding at the end of period	308,000		$	10.16	3.84 years
Options exercisable at end of period	300,000		$	10.12	3.77 years
Weighted average fair value of options granted during the period			$	—



	For the Nine Months Ended September 30, 2016
	Non-performance-based Stock Options
	Shares Underlying Options	Weighted Exercise Price		Weighted Average Contractual Term
Outstanding at beginning of year	325,500	$	10.15	5.56 years
Granted during the period	—	—
Forfeited during the period	—	—
Exercised during the period	—	—
Outstanding at the end of period	325,500	$	10.15	4.81 years
Options exercisable at end of period	303,700	$	10.09	4.68 years
Weighted average fair value of options granted during the period		$	—

As of September 30, 2017, December 31, 2016 and September 30, 2016, the aggregate intrinsic value was $5,174, $5,390 and $2,357, respectively, for outstanding non-performance-based stock options, and $5,052, $5,086 and $2,217, respectively, for exercisable non-performance-based stock options.

As of September 30, 2017, December 31, 2016 and September 30, 2016, there was approximately $12, $21 and $28, respectively, of unrecognized compensation expense related to non-performance-based stock options. The unrecognized compensation expense at September 30, 2017 is expected to be recognized over the remaining weighted average requisite service period of 1.44 years.

A summary of the status of the Company’s restricted stock units under the 2010 Incentive Plan as of September 30, 2017 and 2016, and changes during the nine months then ended is as follows:



	2017				2016
	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Nonvested at January 1,	27,750		$	11.92	39,750		$	11.34
Granted during the period	—		—		—		—
Vested during the period	(1,000	)	10.85		(12,000	)	10.00
Forfeited during the period	(500	)	10.85		—		—
Nonvested at September 30,	26,250		$	11.98	27,750		$	11.92

As of September 30, 2017, December 31, 2016 and September 30, 2016, there was $37, $90, and $111, respectively, of total unrecognized compensation expense related to nonvested restricted stock units. The unamortized compensation expense as of September 30, 2017 is expected to be recognized over the remaining weighted average requisite service period of 0.49 years.

The fair value of non-performance-based stock options that were exercised during the nine months ended September 30, 2017 and 2016 was $488 and $0, respectively. The fair value of restricted stock units that vested during the nine months ended September 30, 2017 and 2016 was $26 and $194, respectively.

2014 Omnibus Plan

In September of 2014, the Company adopted an omnibus incentive plan or the 2014 Omnibus Plan (the “2014 Omnibus Plan”). The purpose of the 2014 Omnibus Plan is to align the long-term financial interests of the employees, directors, consultants and other service providers with those of the shareholders, to attract and retain those employees, directors, consultants and other service providers by providing compensation opportunities that are competitive with other companies and to provide incentives to those individuals who contribute significantly to the Company’s long-term performance and growth. To accomplish these goals, the 2014 Omnibus Plan permits the issuance of stock options, share appreciation rights, restricted shares, restricted share units, deferred shares, unrestricted shares and cash-based awards. The maximum number of shares of the Company’s common stock that may be issued pursuant to grants or options under the 2014 Omnibus Plan is 1,000,000.

During the nine months ended September 30, 2017, the Company awarded 37,625 non-performance restricted stock units, 25,522 performance based restricted stock units, and 70,440 non-performance-based stock options under the 2014 Omnibus Plan. During the nine months ended September 30, 2016, the Company awarded 25,060 non-performance based restricted stock units, and 34,190 market condition restricted stock units, and 76,286 non-performance-based stock options under the 2014 Omnibus Plan.

The non-performance options generally vest equally over three years from the grant date. The performance-based restricted stock units include a market condition 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 fully vest over the requisite service period generally ranging from one to five years.

Stock based compensation expense is measured based upon the fair market value of the award at the grant date and is recognized ratably over the period during which the shares are earned (the requisite service period). For the three and nine months ended September 30, 2017, compensation expense for option awards granted under the 2014 Omnibus Plan was approximately $102 and $296, respectively. For the three and nine months ended September 30, 2017, compensation expense for restricted stock unit awards granted under the 2014 Omnibus Plan was approximately $286 and $841 respectively.

For the three and nine months ended September 30, 2016, compensation expense for option awards granted under the 2014 Omnibus Plan was approximately $55 and $159, respectively. For the three and nine months ended September 30, 2016, compensation expense for restricted stock unit awards granted under the 2014 Omnibus Plan was approximately $198 and $302, 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 Nine Months Ended September 30,
	2017	2016
Dividend yield	0.00%	0.00%
Expected life	5.0 to 7.5 years	5.0 to 6.5 years
Expected volatility	31.60% to 37.55%	33.37% to 37.55%
Risk-free interest rate	1.06% to 2.32%	1.06% to 2.01%

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 as well as the volatility of certain comparable public company peers. 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 September 30, 2017 and 2016, and changes during the nine months ended is as follows:



	2017					2016
	Non-performance-based Stock Options					Non-performance-based Stock Options
	Shares Underlying Options		Weighted Exercise Price		Weighted Average Contractual Term	Shares Underlying Options	Weighted Average Exercise Price		Weighted Average Contractual Term
Outstanding at beginning of year	128,366		$	15.32	8.69 years	52,080	$	14.35	9.12 years
Granted during the period	70,440		26.87			76,286	15.98
Forfeited during the period	(3,465	)	21.24			—	—
Canceled during the period	—		—			—	—
Exercised during the period	(1,544	)	15.00			—	—
Outstanding at the end of period	193,797		$	19.34	8.45 years	128,366	$	15.32	8.94 years
Options exercisable at end of period	53,804		$	15.01	7.74 years	16,293	$	14.28	8.33 years
Weighted average fair value of options granted during the period			$	11.38			$	5.69

As of September 30, 2017, December 31, 2016 and September 30, 2016 the aggregate intrinsic value was $1,482, $1,462 and $266, respectively, for outstanding stock options under the 2014 Omnibus Plan. As of September 30, 2017, December 31, 2016 and September 30, 2016 the aggregate intrinsic value was $643, $203, and $51, respectively, for exercisable stock options outstanding under the 2014 Omnibus Plan.

A summary of the status of the Company’s non-performance based restricted stock units under the 2014 Omnibus Plan as of September 30, 2017 and 2016, and changes during the nine months ended is as follows:



	2017				2016
	Non-performance Based				Non-performance Based
	Restricted Stock Units				Restricted Stock Units
	Units		Weighted Average Grant Date Fair Value		Units		Weighted Average Grant Date Fair Value
Nonvested at January 1,	67,956		$	13.79	70,919		$	13.29
Granted during the period	37,625		27.37		25,060		15.83
Vested during the period	(14,550	)	24.67		(9,716	)	16.04
Forfeited during the period	(2,250	)	27.93		—		—
Nonvested at September 30,	88,781		$	17.41	86,263		$	13.72

A summary of the status of the Company’s performance based restricted stock units under the 2014 Omnibus Plan as of September 30, 2017 and 2016, and changes during the nine months ended is as follows:



	2017				2016
	Performance Based				Performance Based
	Restricted Stock Units				Restricted Stock Units
	Units		Weighted Average Grant Date Fair Value		Units		Weighted Average Grant Date Fair Value
Nonvested at January 1,	51,197		$	8.72	25,474		$	9.45
Granted during the period	25,522		24.34		34,190		9.52
Vested during the period	(19,861	)	15.34		(8,467	)	14.17
Forfeited during the period	(2,014	)	15.68		—		—
Nonvested at September 30,	54,844		$	13.33	51,197		$	8.72

As of September 30, 2017, December 31, 2016 and September 30, 2016 there was $832, $425 and $478 of total unrecognized compensation expense related to options awarded under the 2014 Omnibus Plan, respectively. As of September 30, 2017, December 31, 2016 and September 30, 2016 there was $1,805, $1,089 and $1,373 of total unrecognized compensation related to restricted stock units awarded under the 2014 Omnibus Plan, respectively.

The fair value of the exercised non-performance-based stock options, vested non-performance restricted stock units, and vested performance based restricted stock units during the nine months ended September 30, 2017 was $41, $395, and $530, respectively. For the same period in 2016 the fair value of exercised non-performance-based stock options, vested non-performance restricted stock units, and vested performance based restricted stock units was $0, $159, and $137, respectively.

The compensation expense related to these options and restricted stock units is expected to be recognized over the remaining weighted average requisite service periods of 2.28 years and 2.21 years, respectively.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References + Details

Significant Concentrations of Credit Risk	9 Months Ended
Significant Concentrations of Credit Risk	Sep. 30, 2017
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 Restrictions on Retained Earnings

9 Months Ended

Sep. 30, 2017

Banking and Thrift [Abstract]

Capital Requirements and Restrictions on Retained Earnings

Under U.S. banking law, there are legal restrictions limiting the amount of dividends the Company can declare. Approval of the regulatory authorities is required if the effect of the dividends declared would cause regulatory capital of the Company to fall below specified minimum levels.

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.

In July 2013, the Federal Reserve published final rules for the adoption of the Basel III regulatory capital framework (the “Basel III Capital Rules”). The Basel III Capital Rules, among other things, (i) introduce a new capital measure called “Common Equity Tier 1” (“CET1”), (ii) specify that Tier 1 capital consist of Common Equity Tier 1 and “Additional Tier 1 Capital” instruments meeting specified requirements, (iii) define Common Equity Tier 1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to Common Equity Tier 1 and not to the other components of capital and (iv) expand the scope of the deductions/adjustments as compared to existing regulations. The Basel III Capital Rules became effective for the Company on January 1, 2015 with certain transition provisions to be fully phased in by January 1, 2019.

Starting in January 2016, the implementation of the capital conservation buffer became effective for the Company starting at the 0.625% level and increasing 0.625% each year thereafter, until it reaches 2.5% on January 1, 2019. The capital conservation buffer is designed to absorb losses during periods of economic stress and effectively increases the minimum required risk-weighted capital ratios. Failure to meet the full amount of the buffer will result in restrictions on the Company’s ability to make capital distributions, including dividend payments and stock repurchases, and to pay discretionary bonuses to executive officers.

Quantitative measures established by regulation to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios (set forth in the table below) of total, CET1 and Tier 1 capital (as defined in the regulations) to risk weighted assets (as defined), and of Tier 1 capital (as defined) to average assets (as defined).

Management believes, as of September 30, 2017 and December 31, 2016 that the Company and the Bank met all capital adequacy requirements to which they were subject.

As of September 30, 2017 and December 31, 2016, 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 September 30, 2017 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 September 30, 2017
Total capital (to risk-weighted assets)
Company	$	328,915	14.87	%	$	176,955	8.0	%	n/a		n/a
Bank	255,756		11.57	%	176,841		8.0	%	$	221,051	10.0	%
Tier 1 capital (to risk-weighted assets)
Company	313,437		14.17	%	132,719		6.0	%	n/a		n/a
Bank	245,264		11.10	%	132,575		6.0	%	176,767		8.0
Common equity tier 1 to risk-weighted assets
Company	301,735		13.65	%	99,473		4.5	%	n/a		n/a
Bank	245,264		11.10	%	99,431		4.5	%	143,623		6.5
Tier 1 capital (to average assets)
Company	313,437		15.26	%	82,159		4.0	%	n/a		n/a
Bank	245,264		11.95	%	82,097		4.0	%	102,621		5.0
As of December 31, 2016
Total capital (to risk-weighted assets)
Company	$	228,566	22.02	%	$	83,039	8.0	%	n/a		n/a
Bank	130,237		12.55	%	83,020		8.0	%	$	103,775	10.0	%
Tier 1 capital (to risk-weighted assets)
Company	215,057		20.72	%	62,275		6.0	%	n/a		n/a
Bank	121,713		11.73	%	62,257		6.0	%	83,010		8.0
Common equity tier 1 to risk-weighted assets
Company	211,964		20.42	%	46,711		4.5	%	n/a		n/a
Bank	121,713		11.73	%	46,693		4.5	%	67,445		6.5
Tier 1 capital (to average assets)
Company	$	215,057	16.82	%	51,143		4.0	%	n/a		n/a
Bank	121,713		9.52	%	51,140		4.0	%	63,925		5.0

- Definition

The entire disclosure for banks, savings institutions, and credit unions, for regulatory capital requirements imposed by the Federal Reserve System (FRB), the Federal Deposit Insurance Corporation (FDIC), the Office of Thrift Supervision (OTS) or for any state imposed capital requirements, as applicable. The disclosure may include (1) a description of regulatory capital requirements (a) for capital adequacy purposes and (b) established by the prompt corrective action provisions of Section 38 of the Federal Depository Insurance Act; (2) the actual or possible material effects of noncompliance with such requirements; (3) whether the entity is in compliance with the regulatory capital requirements including (a) required and actual ratios and amounts of Tier 1 leverage, Tier 1 risk-based, and total risk-based capital, tangible capital (for savings institutions), and Tier 3 capital for market risk (for certain banks and bank holding companies), (b) factors that may significantly affect capital adequacy; (4) the prompt corrective action category in which the entity was classified as of its most recent notification; (5) whether management believes any conditions or events since notification have changed the entity's category. Also may include additional information that might be disclosed in situations where substantial doubt about the entity's ability to continue as a going concern for a reasonable period of time.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 505
-Section 50
-Paragraph 1G
-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958577-112826

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-URI http://asc.fasb.org/extlink&oid=35709795&loc=SL5958573-112826

+ Details

Business Combinations

9 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

Business Combinations

Merger with Sovereign Bancshares, Inc.

On August 1, 2017, the Company acquired Sovereign Bancshares, Inc. (“Sovereign”), a Texas corporation and parent company of Sovereign Bank (“the Merger”). The Company issued 5,117,642 shares of its common stock and paid out $56,215 in cash to Sovereign in consideration for the Merger. Additionally, under the terms of the merger agreement, each of Sovereign’s 24,500 shares of Senior Non-Cumulative Perpetual Preferred Stock, Series C, (“Sovereign Series C Preferred Stock”) no par value issued and outstanding immediately prior to the effective time was converted into one share of Senior Non-Cumulative Perpetual, Series D Preferred Stock of the Company (“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 $108,967 was recorded related to the Merger. This goodwill resulted from the combination of expected operational synergies and increased market share in the Dallas-Fort Worth and Houston metroplexes. Goodwill is not tax deductible. The Merger also resulted in a core deposit intangible of $8,662, which will be amortized on an accelerated basis over the estimated life, currently expected to be 10 years.

Fair Value

The measurement period for the Company to determine the fair values of acquired identifiable assets and assumed liabilities will end at the earlier of (i) twelve months from the date of the acquisition or (ii) as soon as the Company receives the information it was seeking about facts and circumstances that existed as of the acquisition date or learns that more information is not obtainable. Provisional estimates for loans, goodwill, intangible assets, deferred tax assets and deposits have been recorded for the acquisition as independent valuations have not been finalized. The Company does not expect any significant differences from estimated values upon completion of the valuations. Estimated fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:



	As of August 1, 2017
Assets
Cash and cash equivalents	$	44,775
Investment securities	166,307
Loans	750,856
Accrued interest receivable	3,437
Bank premises, furniture and equipment	21,512
Non-marketable equity securities	6,751
Other real estate owned	282
Intangible assets	8,662
Goodwill	108,967
Other assets	10,331
Total Assets	$	1,121,880

Liabilities
Deposits	$	809,366
Accounts payable and accrued expenses	5,189
Accrued interest payable and other liabilities	1,616
Advances from Federal Home Loan Bank	80,000
Junior subordinated debentures	8,609
Total liabilities	$	904,780

Preferred stock - series D	24,500
Total stockholders’ equity	24,500

Consideration
Market value of common stock issued	$	136,385
Cash paid	56,215
Total fair value of consideration	$	192,600

Merger-related Expenses

For the nine months ended September 31, 2017 and 2016, the Company incurred $1,435 and $195, respectively, of pre-tax merger and acquisition expenses related to the Merger. Merger and acquisition expenses are included in other non-interest expense on the Company’s statement of income.

Acquired Loans and Purchased Credit Impaired Loans

Acquired loans were preliminarily 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. 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 preliminary fair value and contractual value of loans acquired from Sovereign on August 1, 2017:



	PCI loans		Other acquired loans		Total Acquired Loans
Real Estate	$	5,906	$	532,119	$	538,025
Commercial	27,115		184,473		211,588
Consumer	—		1,243		1,243
Total fair value	33,021		717,835		750,856
Contractual principal balance	$	50,527	$	724,529	$	775,056

The following table presents additional preliminary information about PCI loans acquired from Sovereign on August 1, 2017:



	PCI Loans
Contractually required principal and interest	$	56,809
Non-accretable and accretable difference ⁽¹⁾	23,788
Fair value of PCI loans	$	33,021

⁽¹⁾ Management is still evaluating the non-accretable and accretable difference. The values allocated to accretable and non-accretable are subject to change.

Intangible Assets

The following table discloses the preliminary fair value of intangible assets acquired from Sovereign on August 1, 2017:



	Gross
	Intangible
	Asset
Core deposit intangibles	$	7,703
Servicing asset	454
Intangible lease assets	505
	$	8,662

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 September 30, 2017.

Junior Subordinated Debentures

In connection with the acquisition of Sovereign on August 1, 2017, the Company assumed $8,609 in floating rate junior subordinated debentures underlying common securities and preferred capital securities, or the Trust Securities, issued by SovDallas Capital Trust I (“Trust”), a statutory business trust and acquired wholly-owned subsidiary of the Company. The Company assumed the guarantor position and as such, unconditionally guarantees payment of accrued and unpaid distributions required to be paid on the Trust Securities subject to certain exceptions, the redemption price when a capital security is called for redemption and amounts due if a trust is liquidated or terminated. The Company also owns all of the outstanding common securities of the Trust.

The Trust invested the total proceeds from the sale of the Trust Securities and the investment in common shares in floating rate Junior Subordinated Debentures (the “Debentures”) originally issued by Sovereign. Interest on the Trust Securities is payable quarterly at a rate equal to three-month LIBOR plus 4.0%. Principal payments are due at maturity in July 2038. The Trust Securities are guaranteed by the Company and are subject to redemption. The Company may redeem the debt securities, in whole or in part, at any time at an amount equal to the principal amount of the debt securities being redeemed plus any accrued and unpaid interest.

The Trust Securities qualify as Tier 1 capital, subject to regulatory limitations, under guidelines established by the Federal Reserve.

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 the quarter ended September 30, 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.

Pending Merger with Liberty Bancshares, Inc.

On August 1, 2017, the Company entered into a definitive agreement ("the merger agreement") with Fort Worth-based Liberty Bancshares, Inc. ("Liberty") and its wholly-owned subsidiary Liberty Bank. The merger agreement provides for the merger of Freedom Merger Sub, Inc., a wholly owned subsidiary of the Company, with and into Liberty. Following the merger, Liberty will merge with and into the Company with the Company surviving and Liberty Bank will merge with and into Veritex Community Bank with Veritex Community Bank surviving. As of June 30, 2017, Liberty reported, on a consolidated basis, total assets of $459.3 million and total deposits of $389.4 million. Upon the completion of the proposed merger with Liberty, the Company expects to acquire Liberty’s five branches in the Dallas-Forth Worth metroplex. Under the terms of the merger agreement, the Company will issue 1,450,000 shares of its common stock and will pay approximately $25.0 million in cash for all of the shares of Liberty’s common stock, subject to certain conditions and potential adjustments as described in the merger agreement. The merger agreement contains customary representations, warranties and covenants by the Company and Liberty. The transaction received regulatory approval on October 18, 2017 and is subject to customary closing conditions, including approval of the merger agreement by the shareholders of Liberty and the approval by the shareholders of the Company of issuance of the shares of the Company’s common stock. The transaction is expected to close during the fourth quarter of 2017.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

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+ Details

Intangible Assets and Goodwill

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets and Goodwill

Intangible assets in the accompanying consolidated balance sheets are summarized as follows:



	September 30, 2017
	Weighted	Gross					Net
	Amortization	Intangible		Accumulated			Intangible
	Period	Assets		Amortization			Assets
Core deposit intangibles	9.4 years	$	11,162	$	2,340		$	8,822
Servicing asset	6.7 years	1,541		343			1,198
Intangible lease assets	3.8 years	611		100		—	511
		$	13,314	$	2,783		$	10,531



	December 31, 2016
	Weighted	Gross				Net
	Amortization	Intangible		Accumulated		Intangible
	Period	Assets		Amortization		Assets
Core deposit intangibles	6.2 years	$	3,459	$	1,914	$	1,545
Servicing asset	7.9 years	814		213		601
Intangible lease assets	4.3 years	106		71		35
		$	4,379	$	2,198	$	2,181

For the nine months ended September 30, 2017 and September 30, 2016, amortization expense related to intangible assets of approximately $585 and $421, respectively, is included within amortization of intangibles, occupancy and equipment, and other income within the consolidated statements of income.

Changes in the carrying amount of goodwill are summarized as follows:



	September 30, 2017		December 31, 2016
Beginning of year	$	26,865	$	26,865
Effect of acquisition	108,967		—
End of period	$	135,832	$	26,865

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 23, 2017, the Company announced that Veritex Community Bank entered into a Purchase and Assumption Agreement with Horizon Bank, SSB to sell certain assets associated with its Austin and Cedar Park branches located in Austin, Texas, which is expected to close in the fourth quarter of 2017.

Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2017
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. 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 September 30, 2017 and December 31, 2016, condensed consolidated results of operations for the three and nine months ended September 30, 2017 and 2016, condensed consolidated stockholders’ equity for the nine months ended September 30, 2017 and 2016 and condensed consolidated cash flows for the nine months ended September 30, 2017 and 2016. Accounting measurements at interim dates inherently involve greater reliance on estimates than at year end and the results for the interim periods shown in this report 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, 2016 included within the Company’s Form 10-K as filed with the Securities and Exchange Commission on March 10, 2017. 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 on the other 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 interest rate and credit risk. Accordingly, all significant operating decisions are based upon analysis of the Company as one segment or unit. The Company’s chief operating decision-maker, the CEO, uses the consolidated results to make operating and strategic decisions.
Reclassifications	Reclassifications Effective January 1, 2017, the Company adopted ASU 2016-09. Per ASU 2016-09 cash paid by an employer when directly withholding shares for tax-withholding purposes should be classified as a financing activity and for presentation purposes be applied retrospectively.
Earnings Per Share	Earnings Per Share Earnings per share (“EPS”) are based upon the weighted-average shares outstanding.
Recent Accounting Pronouncements	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 2017-01 “Business Combinations (Topic 805): Clarifying the Definition of a Business” (“ASU 2017-01”) changes the definition of a business to assist entities with evaluating when a set of transferred assets and activities is deemed to be a business. Determining whether a transferred set constitutes a business is important because the accounting for a business combination differs from that of an asset acquisition. The definition of a business also affects the accounting for dispositions. Under the new standard, when substantially all of the fair value of assets acquired is concentrated in a single asset, or a group of similar assets, the assets acquired would not represent a business and business combination accounting would not be required. The new standard may result in more transactions being accounted for as asset acquisitions rather than business combinations. For public companies, ASU 2017-01 is effective for interim and annual periods beginning after December 15, 2017 and shall be applied prospectively. The Company early adopted ASU 2017-01 as of July 1, 2017, which had no significant impact on the Company's financial statements as of and for the three and nine months ended September 31, 2017. ASU 2016-18 “Statement of Cash Flows (Topic 230): Restricted Cash” (“ASU 2016-18”) requires that the statement of cash flows explain the change during the period in the total of cash, cash equivalents, and amounts generally described as restricted cash or restricted cash equivalents. For public companies, ASU 2016-18 is effective for fiscal years beginning after December 15, 2017, and interim periods within those fiscal years. Early adoption is permitted. 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. This Accounting Standards Update affects entities holding financial assets and net investment in leases that are not accounted for at fair value through net income. The amendments affect loans, debt securities, trade receivables, net investments in leases, off balance sheet credit exposures, reinsurance receivables, and any other financial assets not excluded from the scope that have the contractual right to receive cash. For public business entities, this ASU 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 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 2016-01 “Financial Instruments─Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities” (“ASU 2016-01”) 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. This update will be effective for the Company on January 1, 2018. 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 2014-09 “Revenue from Contracts with Customers (Topic 606)” (“ASU 2014-09”) implements a common revenue standard that clarifies the principles for recognizing revenue. The core principle of ASU 2014-09 is that an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. ASU 2014-09 establishes a five-step model which entities must follow to recognize revenue and removes inconsistencies and weaknesses in existing guidance. The original effective date for ASU 2014-09 was for annual and interim periods beginning after December 15, 2016. However, in August 2015, the FASB issued ASU 2015-14, which deferred the effective date by one year, therefore it is now effective for interim and annual reporting periods beginning after December 15, 2017. The Company will adopt the guidance in the first quarter of 2018 using the modified retrospective application with a cumulative-effect adjustment, if such adjustment is significant. While the guidance will replace most existing revenue recognition guidance in GAAP, the ASU is not applicable to financial instruments and, therefore, will not impact a majority of the Company’s revenue, including net interest income. Our implementation efforts to date include identification of non-interest income revenue streams within the scope of the guidance and review of revenue contracts. Based on our evaluation, the Company does not believe the adoption of ASU 2014-09 will have a significant impact on our financial statements.

Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

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 nine months ended September 30, 2017 and 2016:



	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Earnings (numerator)
Net income	$	5,182	$	3,375	$	11,895	$	9,362
Less: preferred stock dividends	42		—		42		—
Net income available to common stockholders	$	5,140	$	3,375	$	11,853	$	9,362
Shares (denominator)
Weighted average shares outstanding for basic EPS (thousands)	19,976		10,705		16,813		10,698
Dilutive effect of employee stock-based awards	416		320		419		294
Adjusted weighted average shares outstanding	20,392		11,025		17,232		10,992
Earnings per share:
Basic	$	0.26	$	0.32	$	0.70	$	0.88
Diluted	$	0.25	$	0.31	$	0.69	$	0.85

Statement of Cash Flows (Tables)

9 Months Ended

Sep. 30, 2017

Supplemental Cash Flow Elements [Abstract]

Schedule of Other Supplemental Cash Flow Information

Other supplemental cash flow information is presented below:



	Nine Months Ended September 30,
	2017		2016
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest	$	6,714	$	3,858
Cash paid for income taxes	6,025		6,100
Supplemental Disclosures of Non-Cash Flow Information:
Net foreclosure of other real estate owned and repossessed assets	$	—	$	283
Non-cash assets acquired
Investment securities	$	166,307	$	—
Loans	750,856		—
Accrued interest receivable	3,437		—
Bank premises, furniture and equipment	21,512		—
Non-marketable equity securities	6,751		—
Other real estate owned	282		—
Intangible assets	8,662		—
Goodwill	108,967		—
Other assets	10,331		—
Total assets	$	1,077,105	$	—
Non-cash liabilities assumed
Deposits	$	809,366	$	—
Accounts payable and accrued expenses⁽¹⁾	5,189		—
Accrued interest payable and other liabilities	1,616		—
Advances from Federal Home Loan Bank	80,000		—
Junior subordinated debentures	8,609		—
Total liabilities	$	904,780	$	—
Non-cash equity assumed
Preferred stock - series D	24,500		—
Total equity assumed	$	24,500	$	—
5,117,642 shares of common stock issued in connection with acquisition	$	136,385	$	—

⁽¹⁾ Accounts payable and accrued expenses includes accrued preferred stock dividends of $185.

Investment Securities (Tables)

9 Months Ended

Sep. 30, 2017

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 income (loss), and the fair value of securities are as follows:



	September 30, 2017
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available for Sale
U.S. government agencies	$	10,827	$	92	$	11	$	10,908
Corporate bonds	7,500		330		—		$	7,830
Municipal securities	52,392		269		141		52,520
Mortgage-backed securities	81,454		98		447		81,105
Collateralized mortgage obligations	52,062		99		395		51,766
Asset-backed securities	649		10		—		659
	$	204,884	$	898	$	994	$	204,788



	December 31, 2016
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Available for Sale
U.S. government agencies	$	732	$	—	$	36	$	696
Municipal securities	14,540		2		500		14,042
Mortgage-backed securities	49,907		83		871		49,119
Collateralized mortgage obligations	38,507		32		612		37,927
Asset-backed securities	764		11		—		775
	$	104,450	$	128	$	2,019	$	102,559

Schedule of Investment Securities That Have Been in a Continuous Unrealized Loss Position



	September 30, 2017
	Less Than 12 Months				12 Months or More				Totals
	Fair Value		Unrealized Loss		Fair Value		Unrealized Loss		Fair Value		Unrealized Loss
Available for Sale
U.S. government agencies	$	—	$	—	$	633	$	11	$	633	$	11
Municipal securities	7,059		76		5,118		65		12,177		141
Mortgage-backed securities	54,852		398		4,029		49		58,881		447
Collateralized mortgage obligations	32,784		372		1,412		23		34,196		395
	$	94,695	$	846	$	11,192	$	148	$	105,887	$	994



	December 31, 2016
	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	$	—	$	—	$	696	$	36	$	696	$	36
Municipal securities	12,060		478		518		22		12,578		500
Mortgage-backed securities	37,274		802		6,848		69		44,122		871
Collateralized mortgage obligations	29,618		584		1,618		28		31,236		612
	$	78,952	$	1,864	$	9,680	$	155	$	88,632	$	2,019

Schedule of Amortized Costs and Estimated Fair Values of Securities Available for Sale, By Contractual Maturity



	September 30, 2017
	Available For Sale
	Amortized Cost		Fair Value
Due in one year or less	$	—	$	—
Due from one year to five years	27,145		27,649
Due from five years to ten years	24,408		24,432
Due after ten years	19,166		19,177
	70,719		71,258
Mortgage-backed securities	81,454		81,105
Collateralized mortgage obligations	52,062		51,766
Asset-backed securities	649		659
	$	204,884	$	204,788



	December 31, 2016
	Available For Sale
	Amortized Cost		Fair Value
Due in one year or less	$	—	$	—
Due from one year to five years	4,009		3,974
Due from five years to ten years	3,522		3,346
Due after ten years	7,741		7,418
	15,272		14,738
Mortgage-backed securities	49,907		49,119
Collateralized mortgage obligations	38,507		37,927
Asset-backed securities	764		775
	$	104,450	$	102,559

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 nine months ended September 30, 2017 and 2016 were as follows:



	Nine Months Ended September 30,
	2017		2016
Proceeds from sales	$	118,165	$	8,378
Gross realized gains	335		43
Gross realized losses	130		40

Loans and Allowance for Loan Losses (Tables)

9 Months Ended

Sep. 30, 2017

Receivables [Abstract]

Summary of Loans in the Accompanying Consolidated Balance Sheets

Loans in the accompanying condensed consolidated balance sheets are summarized as follows:



	September 30, 2017			December 31, 2016
Real estate:
Construction and land	$	276,670		$	162,614
Farmland	6,572			8,262
1 - 4 family residential	185,473			140,137
Multi-family residential	54,475			14,683
Commercial Real Estate	802,432			370,696
Commercial	577,758			291,416
Consumer	4,129			4,089
	1,907,509			991,897
Deferred loan fees	(28		)	(55		)
Allowance for loan losses	(10,492		)	(8,524		)
	$	1,896,989		$	983,318

Schedule of Non-Accrual Loans

Non-accrual loans aggregated by class of loans, as of September 30, 2017 and December 31, 2016, are as follows:



	Non-Accrual Loans
	September 30, 2017 ⁽¹⁾		December 31, 2016
Real estate:
Construction and land	$	—	$	—
Farmland	—		—
1 - 4 family residential	—		—
Multi-family residential	—		—
Commercial Real Estate	794		—
Commercial	1,048		930
Consumer	14		11
	$	1,856	$	941

Schedule of Age Analysis of Past Due Loans, Aggregated by Class of Loans

An aging analysis of past due loans, aggregated by class of loans, as of September 30, 2017 and December 31, 2016 is as follows:



	September 30, 2017
	30 to 59 Days		60 to 89 Days		90 Days or Greater		Total Past Due		Total Current ⁽¹⁾		Total Loans		Total 90 Days Past Due and Still Accruing⁽²⁾
Real estate:
Construction and land	$	—	$	—	$	—	$	—	$	276,670	$	276,670	$	—
Farmland	—		—		—		—		6,572		6,572		—
1 - 4 family residential	366		—		54		420		185,053		185,473		54
Multi-family residential	—		—		—		—		54,475		54,475		—
Commercial Real Estate	66		—		727		793		801,639		802,432		—
Commercial	2,138		447		1,037		3,622		574,136		577,758
Consumer	27		15		6		48		4,081		4,129		—
	$	2,597	$	462	$	1,824	$	4,883	$	1,902,626	$	1,907,509	$	54

⁽²⁾ Loans 90 days past due and still accruing excludes $3.3 million of PCI loans as of September 30, 2017. No PCI loans were considered non-performing loans as of September 30, 2017.



	December 31, 2016
	30 to 59 Days		60 to 89 Days		90 Days or Greater		Total Past Due		Total Current		Total Loans		Total 90 Days Past Due and Still Accruing
Real estate:
Construction and land	$	1,047	$	—	$	—	$	1,047	$	161,567	$	162,614	$	—
Farmland	—		—		—		—		8,262		8,262		—
1 - 4 family residential	510		214		—		724		139,413		140,137		—
Multi-family residential	—		—		—		—		14,683		14,683		—
Commercial Real Estate	—		—		754		754		369,942		370,696		754
Commercial	1,344		438		532		2,314		289,102		291,416		81
Consumer	41		—		—		41		4,048		4,089		—
	$	2,942	$	652	$	1,286	$	4,880	$	987,017	$	991,897	$	835

Summary of Impaired Loans, Including Purchased Credit Impaired Loans and TDRs

Impaired loans, including TDRs, at September 30, 2017 and December 31, 2016 are summarized in the following tables.



	September 30, 2017 ⁽¹⁾
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment With Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment YTD
Real estate:
Construction and land	$	—	$	—	$	—	$	—	$	—	$	—
Farmland	—		—		—		—		—		—
1 - 4 family residential	162		162		—		162		—		191
Multi-family residential	—		—		—		—		—		—
Commercial Real Estate	1,169		1,169		—		1,169		—		1,191
Commercial	1,071		855		216		1,071		156		1,122
Consumer	83		83		—		83		—		94
Total	$	2,485	$	2,269	$	216	$	2,485	$	156	$	2,598



	December 31, 2016
	Unpaid Contractual Principal Balance		Recorded Investment with No Allowance		Recorded Investment With Allowance		Total Recorded Investment		Related Allowance		Average Recorded Investment YTD
Real estate:
Construction and land	$	—	$	—	$	—	$	—	$	—	$	—
Farmland	—		—		—		—		—		—
1 - 4 family residential	164		164		—		164		—		265
Multi-family residential	—		—		—		—		—		—
Commercial Real Estate	382		382		—		382		—		440
Commercial	955		381		574		955		246		463
Consumer	92		81		11		92		4		12
Total	$	1,593	$	1,008	$	585	$	1,593	$	250	$	1,180

Summary of the Terms of Certain Loans Modified as TDRs

The terms of certain loans modified as TDRs during the nine months ended September 30, 2016 are summarized in the following table:



				During the nine months ended September 30, 2016
				Post-Modification Outstanding Recorded Investment
	Number of Loans	Pre- Modification Outstanding Recorded Investment		Adjusted Interest Rate		Extended Maturity		Extended Maturity and Restructured Payments		Extended Maturity, Restructured Payments and Adjusted Interest Rate
Real estate loans:
Construction and land	—	$	—	$	—	$	—	$	—	$	—
Farmland	—	—		—		—		—		—
1 - 4 family residential	—	—		—		—		—		—
Multi-family residential	—	—		—		—		—		—
Nonfarm nonresidential	—	—		—		—		—		—
Commercial	2	175		—		—		169		—
Consumer	—	—		—		—		—		—
Total	2	$	175	$	—	$	—	$	169	$	—

Summary of Internal Ratings of Loans, Including Purchased Credit Impaired Loans

The following tables summarize the Company’s internal ratings of its loans, including purchased credit impaired loans, as of September 30, 2017 and December 31, 2016:



	September 30, 2017
	Pass		Special Mention		Substandard		Doubtful		PCI⁽¹⁾		Total
Real estate:
Construction and land	$	276,060	$	610	$	—	$	—	—		$	276,670
Farmland	6,572		—		—		—		—		6,572
1 - 4 family residential	185,216		—		257		—		—		185,473
Multi-family residential	54,475		—		—		—		—		54,475
Commercial Real Estate	775,129		8,142		13,403		—		5,758		802,432
Commercial	528,803		16,328		6,065		116		26,446		577,758
Consumer	4,043		—		86		—		—		4,129
Total	$	1,830,298	$	25,080	$	19,811	$	116	$	32,204	$	1,907,509



	December 31, 2016
	Pass		Special Mention		Substandard		Doubtful		Total
Real estate:
Construction and land	$	162,614	$	—	$	—	$	—	$	162,614
Farmland	8,262		—		—		—		8,262
1 - 4 family residential	139,212		710		215		—		140,137
Multi-family residential	14,683		—		—		—		14,683
Commercial Real Estate	368,370		2,326		—		—		370,696
Commercial	289,589		686		1,034		107		291,416
Consumer	4,078		—		11		—		4,089
Total	$	986,808	$	3,722	$	1,260	$	107	$	991,897

Schedule of Analysis of the Allowance for Loan Losses

An analysis of the allowance for loan losses for the nine months ended September 30, 2017 and 2016 and year ended December 31, 2016 is as follows:



	Nine Months Ended September 30, 2017			Year Ended December 31, 2016			Nine Months Ended September 30, 2016
Balance at beginning of year	$	8,524		$	6,772		$	6,772
Provision charged to earnings	2,585			2,050			1,610
Charge-offs	(622		)	(333		)	(309		)
Recoveries	5			35			29
Net charge-offs	(617		)	(298		)	(280		)
Balance at end of year	$	10,492		$	8,524		$	8,102

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:



	For the Nine Months Ended September 30, 2017
	Real Estate
	Construction, Land and Farmland			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	(252		)	415			973		1,462			(13		)	2,585
Charge-offs	—			(11		)	—		(611		)	—			(622		)
Recoveries	—			—			—		5			—			5
Net charge-offs (recoveries)	—			(11		)	—		(606		)	—			(617		)
Balance at end of period	$	1,163		$	1,520		$	3,976	$	3,811		$	22		$	10,492
Period-end amount allocated to:
Specific reserves:
Impaired loans	$	—		$	—		$	—	$	156		$	—		$	156
Total specific reserves	—			—			—		156			—			156
General reserves	1,163			1,520			3,976		3,655			22			10,336
Total	$	1,163		$	1,520		$	3,976	$	3,811		$	22		$	10,492



	For the Year Ended December 31, 2016
	Real Estate
	Construction, Land and Farmland		Residential			Commercial Real Estate		Commercial			Consumer			Total
Balance at beginning of period	$	1,104	$	1,124		$	2,189	$	2,324		$	31		$	6,772
Provision (recapture) charged to earnings	311		(8		)	814		913			20			2,050
Charge-offs	—		—			—		(314		)	(19		)	(333		)
Recoveries	—		—			—		32			3			35
Net charge-offs (recoveries)	—		—			—		(282		)	(16		)	(298		)
Balance at end of period	$	1,415	$	1,116		$	3,003	$	2,955		$	35		$	8,524
Period-end amount allocated to:
Specific reserves:
Impaired loans	$	—	$	—		$	—	$	246		$	4		$	250
Total specific reserves	—		—			—		246			4			250
General reserves	1,415		1,116			3,003		2,709			31			8,274
Total	$	1,415	$	1,116		$	3,003	$	2,955		$	35		$	8,524



	For the Nine Months Ended September 30, 2016
	Real Estate
	Construction, Land and Farmland		Residential			Commercial Real Estate		Commercial			Consumer			Total
Balance at beginning of year	$	1,104	$	1,124		$	2,189	$	2,324		$	31		$	6,772
Provision (recapture) charged to earnings	368		(38		)	532		741			7			1,610
Charge-offs	—		—			—		(300		)	(9		)	(309		)
Recoveries	—		—			—		28			1			29
Net charge-offs (recoveries)	—		—			—		(272		)	(8		)	(280		)
Balance at end of year	$	1,472	$	1,086		$	2,721	$	2,793		$	30		$	8,102
Period-end amount allocated to:
Specific reserves:
Impaired loans	$	—	$	—		$	—	$	221		$	4		$	225
Total specific reserves	—		—			—		221			4			225
General reserves	1,472		1,086			2,721		2,572			26			7,877
Total	$	1,472	$	1,086		$	2,721	$	2,793		$	30		$	8,102

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



	September 30, 2017
	Real Estate
	Construction, Land and Farmland		Residential		Commercial Real Estate		Commercial		Consumer		Total
Loans individually evaluated for impairment	$	—	$	162	$	1,169	$	1,071	$	83	$	2,485
Loans collectively evaluated for impairment	283,242		239,786		795,505		550,241		4,046		$	1,872,820
PCI loans	—		—		5,758		26,446		—		32,204
Total	$	283,242	$	239,948	$	802,432	$	577,758	$	4,129	$	1,907,509



	December 31, 2016
	Real Estate
	Construction, Land and Farmland		Residential		Commercial Real Estate		Commercial		Consumer		Total
Loans individually evaluated for impairment	$	—	$	164	$	382	$	955	$	92	$	1,593
Loans collectively evaluated for impairment	170,876		154,656		370,314		290,461		3,997		990,304
PCI loans	—		—		—		—		—		—
Total	$	170,876	$	154,820	$	370,696	$	291,416	$	4,089	$	991,897

Schedule of Summary of Changes in Servicing Assets

At September 30, 2017, the Company was servicing loans of approximately $70,392. A summary of the changes in the related servicing assets are as follows:



	Nine Months Ended September 30,
	2017			2016
Balance at beginning of year	$	601		$	426
Servicing asset acquired through acquisition	454			—
Increase from loan sales	273			231
Amortization charged to income	(130		)	(81		)
Balance at end of period	$	1,198		$	576

Fair Value Disclosures (Tables)

9 Months Ended

Sep. 30, 2017

Fair Value Disclosures [Abstract]

Schedule of Assets Measured at Fair Value on a Recurring Basis



	Fair Value Measurements Using
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
As of September 30, 2017
Investment securities available for sale	$	—	$	204,788	$	—	$	204,788
As of December 31, 2016
Investment securities available for sale	$	—	$	102,559	$	—	$	102,559

Schedule of Assets Measured at Fair Value on a Non-Recurring Basis



	Fair Value Measurements Using
	Level 1 Inputs		Level 2 Inputs		Level 3 Inputs		Total Fair Value
As of September 30, 2017
Assets:
Impaired loans	$	—	$	—	$	2,329	$	2,329
As of December 31, 2016
Assets:
Impaired loans	$	—	$	—	$	1,343	$	1,343

Schedule of Significant Unobservable Inputs Used in the Fair Value Measurements

For Level 3 financial assets measured at fair value as of September 30, 2017 and December 31, 2016, the significant unobservable inputs used in the fair value measurements were as follows:



September 30, 2017
			Valuation	Unobservable	Weighted
Assets/Liabilities	Fair Value		Technique	Input(s)	Average
Impaired loans	$	2,329	Collateral Method	Adjustments for selling costs	8	%



December 31, 2016
			Valuation	Unobservable	Weighted
Assets/Liabilities	Fair Value		Technique	Input(s)	Average
Impaired loans	$	1,343	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 September 30, 2017 and December 31, 2016 were as follows:



	September 30,				December 31,
	2017				2016
	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial assets:
Level 1 inputs:
Cash and cash equivalents	$	151,376	$	151,376	$	234,791	$	234,791
Level 2 inputs:
Loans held for sale	2,179		2,179		5,208		5,208
Accrued interest receivable	6,387		6,387		2,907		2,907
Bank-owned life insurance	20,517		20,517		20,077		20,077
Servicing asset	1,198		1,198		601		601
Non-marketable equity securities	10,283		10,283		7,366		7,366
Level 3 inputs:
Loans, net	1,896,989		1,907,203		983,318		987,021
Financial liabilities:
Level 2 inputs:
Deposits	$	1,985,658	$	1,986,342	$	1,119,630	$	1,085,888
Advances from FHLB	38,200		38,244		38,306		38,570
Accrued interest payable	324		324		141		141
Junior subordinated debentures	11,702		11,702		3,093		3,093
Subordinated notes	4,987		4,987		4,942		4,942

Financial Instruments with Off-Balance Sheet Risk (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017 and December 31, 2016:



	September 30,		December 31,
	2017		2016
Commitments to extend credit	$	545,999	$	236,919
Standby and commercial letters of credit	6,417		6,933
	$	552,416	$	243,852

Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2017

Compensation and Retirement Disclosure [Abstract]

Summary of ESOP Shares

The following is a summary of ESOP shares as of September 30, 2017 and December 31, 2016:



	September 30,		December 31,
	2017		2016
Allocated shares	44,257		44,257
Unearned shares	18,783		18,783
Total ESOP shares	63,040		63,040
Fair value of unearned shares	$	506	$	502

Stock and Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Summary of Option Activity

A summary of the status of the Company’s stock options under the 2014 Omnibus Plan as of September 30, 2017 and 2016, and changes during the nine months ended is as follows:



	2017					2016
	Non-performance-based Stock Options					Non-performance-based Stock Options
	Shares Underlying Options		Weighted Exercise Price		Weighted Average Contractual Term	Shares Underlying Options	Weighted Average Exercise Price		Weighted Average Contractual Term
Outstanding at beginning of year	128,366		$	15.32	8.69 years	52,080	$	14.35	9.12 years
Granted during the period	70,440		26.87			76,286	15.98
Forfeited during the period	(3,465	)	21.24			—	—
Canceled during the period	—		—			—	—
Exercised during the period	(1,544	)	15.00			—	—
Outstanding at the end of period	193,797		$	19.34	8.45 years	128,366	$	15.32	8.94 years
Options exercisable at end of period	53,804		$	15.01	7.74 years	16,293	$	14.28	8.33 years
Weighted average fair value of options granted during the period			$	11.38			$	5.69

A summary of option activity under the 2010 Incentive Plan for the nine months ended September 30, 2017 and 2016, and changes during the period then ended is presented below:



	For the Nine Months Ended September 30, 2017
	Non-performance-based Stock Options
	Shares Underlying Options		Weighted Exercise Price		Weighted Average Contractual Term
Outstanding at beginning of year	325,500		$	10.15	4.56 years
Granted during the period	—		—
Forfeited during the period	—		—
Canceled during the period	—		—
Exercised during the period	(17,500	)	10.00
Outstanding at the end of period	308,000		$	10.16	3.84 years
Options exercisable at end of period	300,000		$	10.12	3.77 years
Weighted average fair value of options granted during the period			$	—



	For the Nine Months Ended September 30, 2016
	Non-performance-based Stock Options
	Shares Underlying Options	Weighted Exercise Price		Weighted Average Contractual Term
Outstanding at beginning of year	325,500	$	10.15	5.56 years
Granted during the period	—	—
Forfeited during the period	—	—
Exercised during the period	—	—
Outstanding at the end of period	325,500	$	10.15	4.81 years
Options exercisable at end of period	303,700	$	10.09	4.68 years
Weighted average fair value of options granted during the period		$	—

Summary of Status of the Company's Restricted Shares or Restricted Stock Units



	2017				2016
	Non-performance Based				Non-performance Based
	Restricted Stock Units				Restricted Stock Units
	Units		Weighted Average Grant Date Fair Value		Units		Weighted Average Grant Date Fair Value
Nonvested at January 1,	67,956		$	13.79	70,919		$	13.29
Granted during the period	37,625		27.37		25,060		15.83
Vested during the period	(14,550	)	24.67		(9,716	)	16.04
Forfeited during the period	(2,250	)	27.93		—		—
Nonvested at September 30,	88,781		$	17.41	86,263		$	13.72



	2017				2016
	Performance Based				Performance Based
	Restricted Stock Units				Restricted Stock Units
	Units		Weighted Average Grant Date Fair Value		Units		Weighted Average Grant Date Fair Value
Nonvested at January 1,	51,197		$	8.72	25,474		$	9.45
Granted during the period	25,522		24.34		34,190		9.52
Vested during the period	(19,861	)	15.34		(8,467	)	14.17
Forfeited during the period	(2,014	)	15.68		—		—
Nonvested at September 30,	54,844		$	13.33	51,197		$	8.72

A summary of the status of the Company’s restricted stock units under the 2010 Incentive Plan as of September 30, 2017 and 2016, and changes during the nine months then ended is as follows:



	2017				2016
	Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
Nonvested at January 1,	27,750		$	11.92	39,750		$	11.34
Granted during the period	—		—		—		—
Vested during the period	(1,000	)	10.85		(12,000	)	10.00
Forfeited during the period	(500	)	10.85		—		—
Nonvested at September 30,	26,250		$	11.98	27,750		$	11.92

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 Nine Months Ended September 30,
	2017	2016
Dividend yield	0.00%	0.00%
Expected life	5.0 to 7.5 years	5.0 to 6.5 years
Expected volatility	31.60% to 37.55%	33.37% to 37.55%
Risk-free interest rate	1.06% to 2.32%	1.06% to 2.01%

Capital Requirements and Restrictions on Retained Earnings (Tables)

9 Months Ended

Sep. 30, 2017

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 September 30, 2017
Total capital (to risk-weighted assets)
Company	$	328,915	14.87	%	$	176,955	8.0	%	n/a		n/a
Bank	255,756		11.57	%	176,841		8.0	%	$	221,051	10.0	%
Tier 1 capital (to risk-weighted assets)
Company	313,437		14.17	%	132,719		6.0	%	n/a		n/a
Bank	245,264		11.10	%	132,575		6.0	%	176,767		8.0
Common equity tier 1 to risk-weighted assets
Company	301,735		13.65	%	99,473		4.5	%	n/a		n/a
Bank	245,264		11.10	%	99,431		4.5	%	143,623		6.5
Tier 1 capital (to average assets)
Company	313,437		15.26	%	82,159		4.0	%	n/a		n/a
Bank	245,264		11.95	%	82,097		4.0	%	102,621		5.0
As of December 31, 2016
Total capital (to risk-weighted assets)
Company	$	228,566	22.02	%	$	83,039	8.0	%	n/a		n/a
Bank	130,237		12.55	%	83,020		8.0	%	$	103,775	10.0	%
Tier 1 capital (to risk-weighted assets)
Company	215,057		20.72	%	62,275		6.0	%	n/a		n/a
Bank	121,713		11.73	%	62,257		6.0	%	83,010		8.0
Common equity tier 1 to risk-weighted assets
Company	211,964		20.42	%	46,711		4.5	%	n/a		n/a
Bank	121,713		11.73	%	46,693		4.5	%	67,445		6.5
Tier 1 capital (to average assets)
Company	$	215,057	16.82	%	51,143		4.0	%	n/a		n/a
Bank	121,713		9.52	%	51,140		4.0	%	63,925		5.0

Business Combinations (Tables)

9 Months Ended

Sep. 30, 2017

Business Combinations [Abstract]

Schedule of Acquired Assets and Assumed Liabilities

Estimated fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows:



	As of August 1, 2017
Assets
Cash and cash equivalents	$	44,775
Investment securities	166,307
Loans	750,856
Accrued interest receivable	3,437
Bank premises, furniture and equipment	21,512
Non-marketable equity securities	6,751
Other real estate owned	282
Intangible assets	8,662
Goodwill	108,967
Other assets	10,331
Total Assets	$	1,121,880

Liabilities
Deposits	$	809,366
Accounts payable and accrued expenses	5,189
Accrued interest payable and other liabilities	1,616
Advances from Federal Home Loan Bank	80,000
Junior subordinated debentures	8,609
Total liabilities	$	904,780

Preferred stock - series D	24,500
Total stockholders’ equity	24,500

Consideration
Market value of common stock issued	$	136,385
Cash paid	56,215
Total fair value of consideration	$	192,600

Summary of Loans Acquired in a Business Combination

The following table discloses the preliminary fair value and contractual value of loans acquired from Sovereign on August 1, 2017:



	PCI loans		Other acquired loans		Total Acquired Loans
Real Estate	$	5,906	$	532,119	$	538,025
Commercial	27,115		184,473		211,588
Consumer	—		1,243		1,243
Total fair value	33,021		717,835		750,856
Contractual principal balance	$	50,527	$	724,529	$	775,056

The following table presents additional preliminary information about PCI loans acquired from Sovereign on August 1, 2017:



	PCI Loans
Contractually required principal and interest	$	56,809
Non-accretable and accretable difference ⁽¹⁾	23,788
Fair value of PCI loans	$	33,021

⁽¹⁾ Management is still evaluating the non-accretable and accretable difference. The values allocated to accretable and non-accretable are subject to change.

Summary of Finite-Lived Intangible Assets Acquired

The following table discloses the preliminary fair value of intangible assets acquired from Sovereign on August 1, 2017:



	Gross
	Intangible
	Asset
Core deposit intangibles	$	7,703
Servicing asset	454
Intangible lease assets	505
	$	8,662

Intangible Assets and Goodwill (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

Intangible assets in the accompanying consolidated balance sheets are summarized as follows:



	September 30, 2017
	Weighted	Gross					Net
	Amortization	Intangible		Accumulated			Intangible
	Period	Assets		Amortization			Assets
Core deposit intangibles	9.4 years	$	11,162	$	2,340		$	8,822
Servicing asset	6.7 years	1,541		343			1,198
Intangible lease assets	3.8 years	611		100		—	511
		$	13,314	$	2,783		$	10,531



	December 31, 2016
	Weighted	Gross				Net
	Amortization	Intangible		Accumulated		Intangible
	Period	Assets		Amortization		Assets
Core deposit intangibles	6.2 years	$	3,459	$	1,914	$	1,545
Servicing asset	7.9 years	814		213		601
Intangible lease assets	4.3 years	106		71		35
		$	4,379	$	2,198	$	2,181

Schedule of Goodwill

Changes in the carrying amount of goodwill are summarized as follows:



	September 30, 2017		December 31, 2016
Beginning of year	$	26,865	$	26,865
Effect of acquisition	108,967		—
End of period	$	135,832	$	26,865

Summary of Significant Accounting Policies - Additional Information (Details)	9 Months Ended
	Sep. 30, 2017 segment mortgage_office branch
Nature of Organization:
Number of branches	21
Number of mortgage offices \| mortgage_office	1
Segment Reporting:
Number of reportable segment \| segment	1
Dallas-Fort Worth
Nature of Organization:
Number of branches	17
Austin
Nature of Organization:
Number of branches	2

Summary of Significant Accounting Policies - Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Earnings (numerator)
Net income	$ 5,182	$ 3,375	$ 11,895	$ 9,362
Less: preferred stock dividends	42	0	42	0
Net income available to common stockholders	$ 5,140	$ 3,375	$ 11,853	$ 9,362
Shares (denominator)
Weighted average shares outstanding for basic EPS (thousands) (in shares)	19,976	10,705	16,813	10,698
Dilutive effect of employee stock based awards (in shares)	416	320	419	294
Adjusted weighted average shares outstanding (in shares)	20,392	11,025	17,232	10,992
Earnings per share:
Basic (in dollars per share)	$ 0.26	$ 0.32	$ 0.70	$ 0.88
Diluted (in dollars per share)	$ 0.25	$ 0.31	$ 0.69	$ 0.85

Summary of Significant Accounting Policies - Antidilutive Securities (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Accounting Policies [Abstract]
Excluded from diluted EPS weighted average shares (in shares)	0	0	0	0

Statement of Cash Flows - Other Supplemental Information (Details) - USD ($) $ in Thousands			9 Months Ended
	Aug. 08, 2017	Aug. 01, 2017	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Supplemental Disclosures of Cash Flow Information:
Cash paid for interest			$ 6,714	$ 3,858
Cash paid for income taxes			6,025	6,100
Supplemental Disclosures of Non-Cash Flow Information:
Net foreclosure of other real estate owned and repossessed assets			0	$ 283
Non-cash assets acquired
Goodwill			135,832		$ 26,865	$ 26,865
Non-cash liabilities assumed
Preferred stock dividends			42
Sovereign Bancshares, Inc.
Non-cash assets acquired
Investment securities		$ 166,307
Loans		750,856
Accrued interest receivable		3,437
Bank premises, furniture and equipment		21,512
Non-marketable equity securities		6,751
Other real estate owned		282
Intangible assets		8,662
Goodwill		108,967
Other assets		10,331
Total assets		1,077,105
Non-cash liabilities assumed
Deposits		809,366
Accounts payable and accrued expenses		5,189
Accrued interest payable and other liabilities		1,616
Advances from Federal Home Loan Bank		80,000
Junior subordinated debentures		8,609
Total liabilities		904,780
Market value of common stock issued		$ 136,385
Number of shares issued in connection with acquisition (in shares)		5,117,642
Series D Preferred Stock
Non-cash liabilities assumed
Business combination total redemption amount			$ 24,500
Series D Preferred Stock \| Sovereign Bancshares, Inc.
Non-cash liabilities assumed
Business combination total redemption amount	$ 24,727	$ 24,500
Preferred stock dividends		$ 185

Investment Securities - Carrying Amount and Fair Values (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Available for Sale securities
Amortized Cost	$ 204,884	$ 104,450
Gross Unrealized Gains	898	128
Gross Unrealized Losses	994	2,019
Fair Value	204,788	102,559
U.S. government agencies
Available for Sale securities
Amortized Cost	10,827	732
Gross Unrealized Gains	92	0
Gross Unrealized Losses	11	36
Fair Value	10,908	696
Corporate bonds
Available for Sale securities
Amortized Cost	7,500
Gross Unrealized Gains	330
Gross Unrealized Losses	0
Fair Value	7,830
Municipal securities
Available for Sale securities
Amortized Cost	52,392	14,540
Gross Unrealized Gains	269	2
Gross Unrealized Losses	141	500
Fair Value	52,520	14,042
Mortgage-backed securities
Available for Sale securities
Amortized Cost	81,454	49,907
Gross Unrealized Gains	98	83
Gross Unrealized Losses	447	871
Fair Value	81,105	49,119
Collateralized mortgage obligations
Available for Sale securities
Amortized Cost	52,062	38,507
Gross Unrealized Gains	99	32
Gross Unrealized Losses	395	612
Fair Value	51,766	37,927
Asset-backed securities
Available for Sale securities
Amortized Cost	649	764
Gross Unrealized Gains	10	11
Gross Unrealized Losses	0	0
Fair Value	$ 659	$ 775

Investment Securities - Unrealized Loss Position (Details) $ in Thousands	Sep. 30, 2017 USD ($) investment	Dec. 31, 2016 USD ($) investment
Fair Value
Less Than 12 Months, Fair Value	$ 94,695	$ 78,952
12 Months or More, Fair Value	11,192	9,680
Total Fair Value	105,887	88,632
Unrealized Loss
Less Than 12 Months, Unrealized Loss	846	1,864
12 Months or More, Unrealized Loss	148	155
Total Unrealized Loss	$ 994	$ 2,019
Number of investment positions in an unrealized loss position \| investment	79	72
U.S. government agencies
Fair Value
Less Than 12 Months, Fair Value	$ 0	$ 0
12 Months or More, Fair Value	633	696
Total Fair Value	633	696
Unrealized Loss
Less Than 12 Months, Unrealized Loss	0	0
12 Months or More, Unrealized Loss	11	36
Total Unrealized Loss	11	36
Municipal securities
Fair Value
Less Than 12 Months, Fair Value	7,059	12,060
12 Months or More, Fair Value	5,118	518
Total Fair Value	12,177	12,578
Unrealized Loss
Less Than 12 Months, Unrealized Loss	76	478
12 Months or More, Unrealized Loss	65	22
Total Unrealized Loss	141	500
Mortgage-backed securities
Fair Value
Less Than 12 Months, Fair Value	54,852	37,274
12 Months or More, Fair Value	4,029	6,848
Total Fair Value	58,881	44,122
Unrealized Loss
Less Than 12 Months, Unrealized Loss	398	802
12 Months or More, Unrealized Loss	49	69
Total Unrealized Loss	447	871
Collateralized mortgage obligations
Fair Value
Less Than 12 Months, Fair Value	32,784	29,618
12 Months or More, Fair Value	1,412	1,618
Total Fair Value	34,196	31,236
Unrealized Loss
Less Than 12 Months, Unrealized Loss	372	584
12 Months or More, Unrealized Loss	23	28
Total Unrealized Loss	$ 395	$ 612

Investment Securities - Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less	$ 0	$ 0
Due from one year to five years	27,145	4,009
Due from five years to ten years	24,408	3,522
Due after ten years	19,166	7,741
Total investment securities available for sale, single maturity date	70,719	15,272
Total investment securities available for sale, amortized cost basis	204,884	104,450
Fair Value
Due in one year or less	0	0
Due from one year to five years	27,649	3,974
Due from five years to ten years	24,432	3,346
Due after ten years	19,177	7,418
Total investment securities available for sale	71,258	14,738
Total investment securities available for sale, fair value	204,788	102,559
Mortgage-backed securities
Amortized Cost
Amortized cost	81,454	49,907
Fair Value
Fair value	81,105	49,119
Collateralized mortgage obligations
Amortized Cost
Amortized cost	52,062	38,507
Fair Value
Fair value	51,766	37,927
Asset-backed securities
Amortized Cost
Amortized cost	649	764
Fair Value
Fair value	$ 659	$ 775

Investment Securities - Proceeds and Gross Gains/Losses (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Proceeds from sales of investment securities available for sale and gross gains and losses
Proceeds from sales	$ 118,165,000	$ 8,378,000
Gross realized gains	335,000	43,000
Gross realized losses	130,000	40,000
Calls of investment securities
Proceeds from sales of investment securities available for sale and gross gains and losses
Gross realized gains (losses)	$ 0	$ 12,000

Loans and Allowance for Loan Losses - Balance Sheet Summary (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Loans and Allowance for Loan Losses
Loans, gross	$ 1,907,509	$ 991,897
Deferred loan fees	(28)	(55)
Allowance for loan losses	(10,492)	(8,524)	$ (8,102)	$ (6,772)
Loans, net	1,896,989	983,318
Accretable discount related to loans acquired within a business combination	6,432	566
Commercial
Loans and Allowance for Loan Losses
Loans, gross	577,758	291,416
Allowance for loan losses	(3,811)	(2,955)	(2,793)	(2,324)
Consumer
Loans and Allowance for Loan Losses
Loans, gross	4,129	4,089
Allowance for loan losses	(22)	(35)	(30)	(31)
Construction and land \| Real Estate
Loans and Allowance for Loan Losses
Loans, gross	276,670	162,614
Farmland \| Real Estate
Loans and Allowance for Loan Losses
Loans, gross	6,572	8,262
Real estate \| Real Estate
Loans and Allowance for Loan Losses
Loans, gross	239,948	154,820
Allowance for loan losses	(1,520)	(1,116)	(1,086)	(1,124)
Commercial Real Estate \| Real Estate
Loans and Allowance for Loan Losses
Loans, gross	802,432	370,696
Allowance for loan losses	(3,976)	(3,003)	$ (2,721)	$ (2,189)
1 - 4 family residential \| Real estate \| Real Estate
Loans and Allowance for Loan Losses
Loans, gross	185,473	140,137
Multi-family residential \| Real estate \| Real Estate
Loans and Allowance for Loan Losses
Loans, gross	$ 54,475	$ 14,683

Loans and Allowance for Loan Losses - Nonaccrual (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loans and Allowance for Loan Losses
Non-accrual loans	$ 1,856	$ 941
Commercial
Loans and Allowance for Loan Losses
Non-accrual loans	1,048	930
Consumer
Loans and Allowance for Loan Losses
Non-accrual loans	14	11
Construction and land \| Real Estate
Loans and Allowance for Loan Losses
Non-accrual loans	0	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	$ 794	$ 0

Loans and Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Impaired Loans
Unpaid Contractual Principal Balance	$ 2,485	$ 1,593
Recorded Investment with No Allowance	2,269	1,008
Recorded Investment With Allowance	216	585
Total Recorded Investment	2,485	1,593
Related Allowance	156	250
Average Recorded Investment YTD	2,598	1,180
Commercial
Impaired Loans
Unpaid Contractual Principal Balance	1,071	955
Recorded Investment with No Allowance	855	381
Recorded Investment With Allowance	216	574
Total Recorded Investment	1,071	955
Related Allowance	156	246
Average Recorded Investment YTD	1,122	463
Consumer
Impaired Loans
Unpaid Contractual Principal Balance	83	92
Recorded Investment with No Allowance	83	81
Recorded Investment With Allowance	0	11
Total Recorded Investment	83	92
Related Allowance	0	4
Average Recorded Investment YTD	94	12
Construction and land \| 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
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	1,169	382
Recorded Investment with No Allowance	1,169	382
Recorded Investment With Allowance	0	0
Total Recorded Investment	1,169	382
Related Allowance	0	0
Average Recorded Investment YTD	1,191	440
1 - 4 family residential \| Real estate \| Real Estate
Impaired Loans
Unpaid Contractual Principal Balance	162	164
Recorded Investment with No Allowance	162	164
Recorded Investment With Allowance	0	0
Total Recorded Investment	162	164
Related Allowance	0	0
Average Recorded Investment YTD	191	265
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 Losses - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Credit Quality Indicators
Loans	$ 1,907,509	$ 991,897
Pass
Credit Quality Indicators
Loans	1,830,298	986,808
Special Mention
Credit Quality Indicators
Loans	25,080	3,722
Substandard
Credit Quality Indicators
Loans	19,811	1,260
Doubtful
Credit Quality Indicators
Loans	116	107
Commercial
Credit Quality Indicators
Loans	577,758	291,416
Commercial \| Pass
Credit Quality Indicators
Loans	528,803	289,589
Commercial \| Special Mention
Credit Quality Indicators
Loans	16,328	686
Commercial \| Substandard
Credit Quality Indicators
Loans	6,065	1,034
Commercial \| Doubtful
Credit Quality Indicators
Loans	116	107
Consumer
Credit Quality Indicators
Loans	4,129	4,089
Consumer \| Pass
Credit Quality Indicators
Loans	4,043	4,078
Consumer \| Special Mention
Credit Quality Indicators
Loans	0	0
Consumer \| Substandard
Credit Quality Indicators
Loans	86	11
Consumer \| Doubtful
Credit Quality Indicators
Loans	0	0
Construction and land \| Real Estate
Credit Quality Indicators
Loans	276,670	162,614
Construction and land \| Real Estate \| Pass
Credit Quality Indicators
Loans	276,060	162,614
Construction and land \| Real Estate \| Special Mention
Credit Quality Indicators
Loans	610	0
Construction and land \| Real Estate \| Substandard
Credit Quality Indicators
Loans	0	0
Construction and land \| Real Estate \| Doubtful
Credit Quality Indicators
Loans	0	0
Farmland \| Real Estate
Credit Quality Indicators
Loans	6,572	8,262
Farmland \| Real Estate \| Pass
Credit Quality Indicators
Loans	6,572	8,262
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
Real estate \| Real Estate
Credit Quality Indicators
Loans	239,948	154,820
Real estate \| 1 - 4 family residential \| Real Estate
Credit Quality Indicators
Loans	185,473	140,137
Real estate \| 1 - 4 family residential \| Real Estate \| Pass
Credit Quality Indicators
Loans	185,216	139,212
Real estate \| 1 - 4 family residential \| Real Estate \| Special Mention
Credit Quality Indicators
Loans	0	710
Real estate \| 1 - 4 family residential \| Real Estate \| Substandard
Credit Quality Indicators
Loans	257	215
Real estate \| 1 - 4 family residential \| Real Estate \| Doubtful
Credit Quality Indicators
Loans	0	0
Real estate \| Multi-family residential \| Real Estate
Credit Quality Indicators
Loans	54,475	14,683
Real estate \| Multi-family residential \| Real Estate \| Pass
Credit Quality Indicators
Loans	54,475	14,683
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
Commercial Real Estate \| Real Estate
Credit Quality Indicators
Loans	802,432	370,696
Commercial Real Estate \| Real Estate \| Pass
Credit Quality Indicators
Loans	775,129	368,370
Commercial Real Estate \| Real Estate \| Special Mention
Credit Quality Indicators
Loans	8,142	2,326
Commercial Real Estate \| Real Estate \| Substandard
Credit Quality Indicators
Loans	13,403	0
Commercial Real Estate \| Real Estate \| Doubtful
Credit Quality Indicators
Loans	0	0
PCI loans
Credit Quality Indicators
Loans	32,204	0
PCI loans \| Commercial
Credit Quality Indicators
Loans	26,446	0
PCI loans \| Consumer
Credit Quality Indicators
Loans	0	0
PCI loans \| Construction and land \| Real Estate
Credit Quality Indicators
Loans	0
PCI loans \| Farmland \| Real Estate
Credit Quality Indicators
Loans	0
PCI loans \| Real estate \| Real Estate
Credit Quality Indicators
Loans	0	0
PCI loans \| Real estate \| 1 - 4 family residential \| Real Estate
Credit Quality Indicators
Loans	0
PCI loans \| Real estate \| Multi-family residential \| Real Estate
Credit Quality Indicators
Loans	0
PCI loans \| Commercial Real Estate \| Real Estate
Credit Quality Indicators
Loans	$ 5,758	$ 0

Loans and Allowance for Loan Losses - Allowance (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Analysis of allowance for loan losses
Balance at beginning of period	$ 8,524	$ 6,772	$ 6,772
Provision (recapture) charged to earnings	2,585	1,610	2,050
Charge-offs	(622)	(309)	(333)
Recoveries	5	29	35
Net charge-offs (recoveries)	(617)	(280)	(298)
Balance at end of period	10,492	8,102	8,524
Specific reserves:
Impaired loans				$ 156	$ 250	$ 225
Total specific reserves				156	250	225
General reserves				10,336	8,274	7,877
Total	8,524	6,772	6,772	$ 10,492	$ 8,524	$ 8,102
Allowance for loan losses (as a percent)				0.55%	0.86%	0.87%
Commercial
Analysis of allowance for loan losses
Balance at beginning of period	2,955	2,324	2,324
Provision (recapture) charged to earnings	1,462	741	913
Charge-offs	(611)	(300)	(314)
Recoveries	5	28	32
Net charge-offs (recoveries)	(606)	(272)	(282)
Balance at end of period	3,811	2,793	2,955
Specific reserves:
Impaired loans				$ 156	$ 246	$ 221
Total specific reserves				156	246	221
General reserves				3,655	2,709	2,572
Total	2,955	2,324	2,324	3,811	2,955	2,793
Consumer
Analysis of allowance for loan losses
Balance at beginning of period	35	31	31
Provision (recapture) charged to earnings	(13)	7	20
Charge-offs	0	(9)	(19)
Recoveries	0	1	3
Net charge-offs (recoveries)	0	(8)	(16)
Balance at end of period	22	30	35
Specific reserves:
Impaired loans				0	4	4
Total specific reserves				0	4	4
General reserves				22	31	26
Total	35	31	31	22	35	30
Construction, Land and Farmland \| Real Estate
Analysis of allowance for loan losses
Balance at beginning of period	1,415	1,104	1,104
Provision (recapture) charged to earnings	(252)	368	311
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs (recoveries)	0	0	0
Balance at end of period	1,163	1,472	1,415
Specific reserves:
Impaired loans				0	0	0
Total specific reserves				0	0	0
General reserves				1,163	1,415	1,472
Total	1,415	1,104	1,104	1,163	1,415	1,472
Residential \| Real Estate
Analysis of allowance for loan losses
Balance at beginning of period	1,116	1,124	1,124
Provision (recapture) charged to earnings	415	(38)	(8)
Charge-offs	(11)	0	0
Recoveries	0	0	0
Net charge-offs (recoveries)	(11)	0	0
Balance at end of period	1,520	1,086	1,116
Specific reserves:
Impaired loans				0	0	0
Total specific reserves				0	0	0
General reserves				1,520	1,116	1,086
Total	1,116	1,124	1,124	1,520	1,116	1,086
Commercial Real Estate \| Real Estate
Analysis of allowance for loan losses
Balance at beginning of period	3,003	2,189	2,189
Provision (recapture) charged to earnings	973	532	814
Charge-offs	0	0	0
Recoveries	0	0	0
Net charge-offs (recoveries)	0	0	0
Balance at end of period	3,976	2,721	3,003
Specific reserves:
Impaired loans				0	0	0
Total specific reserves				0	0	0
General reserves				3,976	3,003	2,721
Total	$ 3,003	$ 2,189	$ 2,189	$ 3,976	$ 3,003	$ 2,721

Loans and Allowance for Loan Losses - Allowance, Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Allowance, impairment methodology
Loans individually evaluated for impairment	$ 2,485	$ 1,593
Loans collectively evaluated for impairment	1,872,820	990,304
Loans, gross	1,907,509	991,897
Commercial
Allowance, impairment methodology
Loans individually evaluated for impairment	1,071	955
Loans collectively evaluated for impairment	550,241	290,461
Loans, gross	577,758	291,416
Consumer
Allowance, impairment methodology
Loans individually evaluated for impairment	83	92
Loans collectively evaluated for impairment	4,046	3,997
Loans, gross	4,129	4,089
Construction, Land and Farmland \| Real Estate
Allowance, impairment methodology
Loans individually evaluated for impairment	0	0
Loans collectively evaluated for impairment	283,242	170,876
Loans, gross	283,242	170,876
Residential \| Real Estate
Allowance, impairment methodology
Loans individually evaluated for impairment	162	164
Loans collectively evaluated for impairment	239,786	154,656
Loans, gross	239,948	154,820
Commercial Real Estate \| Real Estate
Allowance, impairment methodology
Loans individually evaluated for impairment	1,169	382
Loans collectively evaluated for impairment	795,505	370,314
Loans, gross	802,432	370,696
PCI loans
Allowance, impairment methodology
Loans, gross	32,204	0
PCI loans \| Commercial
Allowance, impairment methodology
Loans, gross	26,446	0
PCI loans \| Consumer
Allowance, impairment methodology
Loans, gross	0	0
PCI loans \| Construction, Land and Farmland \| Real Estate
Allowance, impairment methodology
Loans, gross	0	0
PCI loans \| Residential \| Real Estate
Allowance, impairment methodology
Loans, gross	0	0
PCI loans \| Commercial Real Estate \| Real Estate
Allowance, impairment methodology
Loans, gross	$ 5,758	$ 0

Loans and Allowance for Loan Losses - Servicing Assets (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Servicing Asset at Amortized Cost [Line Items]
Servicing asset	$ 70,392,000
Summary of changes in related servicing assets
Balance at beginning of year	601,000	$ 426,000
Servicing Asset at Amortized Cost, Additions	454,000	0
Increase from loan sales	273,000	231,000
Amortization charged to income	(130,000)	(81,000)
Balance at end of period	1,198,000	$ 576,000
Valuation allowance recorded	0
Interest receivable	6,387,000		$ 2,907,000
Interest-only strip
Summary of changes in related servicing assets
Interest receivable	$ 0		$ 0

Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Examination [Line Items]
Estimated annual effective tax rate (as a percent)	34.20%	34.40%	34.40%	34.20%
Effective tax rate (as a percent)	33.80%	34.40%	32.80%	34.10%
Excess tax benefit and other	$ 30		$ 285
Tax receivable	4,878		4,878
Net deferred tax asset					$ 3,467
Accrued interest payable and other liabilities
Income Tax Examination [Line Items]
Current tax receivable					$ 91
Other assets
Income Tax Examination [Line Items]
Net deferred tax asset	$ 7,566		$ 7,566

Commitments and Contingencies (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Operating Leases
Rental expense on operating lease	$ 1,595	$ 1,051
Non-marketable equity securities	10,283		$ 7,366
Unfunded commitment related to the investment in a qualified housing project	1,875
Qualified Affordable Housing Project
Operating Leases
Non-marketable equity securities	$ 1,991

Fair Value Disclosures - Recurring Basis (Details) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Assets measured at fair value
Investment securities available for sale	$ 204,788,000		$ 102,559,000
Recurring
Assets measured at fair value
Investment securities available for sale	204,788,000		102,559,000
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	204,788,000		102,559,000
Recurring \| Level 3 Inputs
Assets measured at fair value
Investment securities available for sale	$ 0		$ 0

Fair Value Disclosures - Non-recurring Basis (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Assets measured at fair value
Impaired loans, carrying value	$ 2,485,000	$ 1,593,000
Impaired loans, specific allowance	156,000	250,000
Non-recurring
Assets measured at fair value
Impaired loans	2,329,000	1,343,000
Liabilities measured at fair value	0	0
Non-recurring \| Level 1 Inputs
Assets measured at fair value
Impaired loans	0	0
Non-recurring \| Level 2 Inputs
Assets measured at fair value
Impaired loans	0	0
Non-recurring \| Level 3 Inputs
Assets measured at fair value
Impaired loans	$ 2,329,000	$ 1,343,000

Fair Value Disclosures - Level 3 (Details) - Impaired loans - Collateral Method - Level 3 - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Significant unobservable inputs used in the fair value measurements
Fair Value	$ 2,329	$ 1,343
Weighted Average (as a percent)	8.00%	8.00%

Fair Value Disclosures - Financial Instruments (Details) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Estimated fair values and carrying values of all financial instruments
Valuation allowance recorded for servicing assets	$ 0	$ 0
Maximum maturity period for Federal Home Loan Bank advances recorded at carrying value	90 days
Financial liabilities:
Junior subordinated debentures	$ 11,702,000	3,093,000
Subordinated notes	4,987,000	4,942,000
Level 1 Inputs \| Carrying Amount
Financial assets:
Cash and cash equivalents	151,376,000	234,791,000
Level 1 Inputs \| Fair Value
Financial assets:
Cash and cash equivalents	151,376,000	234,791,000
Level 2 Inputs \| Carrying Amount
Financial assets:
Loans held for sale	2,179,000	5,208,000
Accrued interest receivable	6,387,000	2,907,000
Bank-owned life insurance	20,517,000	20,077,000
Servicing asset	1,198,000	601,000
Non-marketable equity securities	10,283,000	7,366,000
Financial liabilities:
Deposits	1,985,658,000	1,119,630,000
Advances from FHLB	38,200,000	38,306,000
Accrued interest payable	324,000	141,000
Junior subordinated debentures	11,702,000	3,093,000
Subordinated notes	4,987,000	4,942,000
Level 2 Inputs \| Fair Value
Financial assets:
Loans held for sale	2,179,000	5,208,000
Accrued interest receivable	6,387,000	2,907,000
Bank-owned life insurance	20,517,000	20,077,000
Servicing asset	1,198,000	601,000
Non-marketable equity securities	10,283,000	7,366,000
Financial liabilities:
Deposits	1,986,342,000	1,085,888,000
Advances from FHLB	38,244,000	38,570,000
Accrued interest payable	324,000	141,000
Junior subordinated debentures	11,702,000	3,093,000
Subordinated notes	4,987,000	4,942,000
Level 3 Inputs \| Carrying Amount
Financial assets:
Loans, net	1,896,989,000	983,318,000
Level 3 Inputs \| Fair Value
Financial assets:
Loans, net	$ 1,907,203,000	$ 987,021,000

Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Financial instruments with off-balance sheet risk
Total commitments	$ 552,416	$ 243,852
Commitments to extend credit
Financial instruments with off-balance sheet risk
Total commitments	545,999	236,919
Standby and commercial letters of credit
Financial instruments with off-balance sheet risk
Total commitments	$ 6,417	$ 6,933

Employee Benefits (Details) - USD ($)	1 Months Ended	9 Months Ended
Employee Benefits (Details) - USD ($)	Jan. 31, 2014	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
ESOP
Matching contributions to 401(k) profit sharing Plan		$ 0	$ 0
Summary of ESOP shares
Allocated shares (in shares)		44,257		44,257
Unearned shares (in shares)		18,783		18,783
Total ESOP shares (in shares)		63,040		63,040
Fair value of unearned shares		$ 506,000		$ 502,000
ESOP
ESOP
Amount borrowed	$ 500,000
Common stock shares purchased by ESOP (in shares)	46,082
Compensation expense		$ 171,000	$ 143,000

Stock and Incentive Plan - 2010 Plan (Details) - 2010 Stock Option and Equity Incentive Plan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2010
Stock and Incentive Plans
Number of shares authorized (in shares)					1,000,000
Stock based compensation expense	$ 20	$ 29	$ 62	$ 86
Restricted shares
Stock and Incentive Plans
Number of shares authorized (in shares)					100,000
Term of continuous service for vesting awards					4 years
Number of shares awarded (in shares)			0	0
Fair value of vested restricted stock units			$ 26	$ 194
Stock option
Stock and Incentive Plans
Number of shares authorized (in shares)					900,000
Term of continuous service for vesting awards					5 years
Contractual terms for non-controlling participants					10 years
Performance-based stock options
Stock and Incentive Plans
Number of shares authorized (in shares)					500,000
Number of shares awarded under stock options (in shares)			0	0
Nonperformance-based stock options
Stock and Incentive Plans
Number of shares awarded under stock options (in shares)			0	0
Fair value of exercised non-performance based options			$ 488	$ 0

Stock and Incentive Plan - 2010 Plan - Options (Details) - Nonperformance-based stock options - 2010 Stock Option and Equity Incentive Plan - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Shares Underlying Options
Outstanding at beginning of period (in shares)	325,500	325,500	325,500
Granted during the period (in shares)	0	0
Forfeited during the period (in shares)	0	0
Canceled during the period (in shares)	0
Exercised during the period (in shares)	(17,500)	0
Outstanding at the end of period (in shares)	308,000	325,500	325,500	325,500
Options exercisable at end of period (in shares)	300,000	303,700
Weighted Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 10.15	$ 10.15	$ 10.15
Granted during the period (in dollars per share)	0.00	0.00
Forfeited during the period (in dollars per share)	0.00	0.00
Canceled during the period (in dollars per share)	0.00
Exercised during the period (in dollars per share)	10.00	0.00
Outstanding at the end of period (in dollars per share)	10.16	10.15	$ 10.15	$ 10.15
Options exercisable at end of period (in dollars per share)	10.12	10.09
Weighted average fair value of options granted during the period (in dollars per share)	$ 0.00	$ 0.00
Weighted Average Contractual Term
Weighted Average Contractual Term	3 years 10 months 2 days	4 years 9 months 22 days	4 years 6 months 22 days	5 years 6 months 22 days
Weighted Average Contractual Term	3 years 9 months 7 days	4 years 8 months 5 days
Additional disclosures
Aggregate intrinsic value of outstanding stock options	$ 5,174	$ 2,357	$ 5,390
Aggregate intrinsic value of exercisable stock options	5,052	2,217	5,086
Unrecognized compensation expense	$ 12	$ 28	$ 21
Requisite service period to recognize compensation cost	1 year 5 months 9 days

Stock and Incentive Plan - 2010 Plan - Restricted Stock Units (Details) - Restricted stock units - 2010 Stock Option and Equity Incentive Plan - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Shares
Nonvested at the beginning of the period (in shares)	27,750	39,750
Granted during the period (in shares)	0	0
Vested during the period (in shares)	(1,000)	(12,000)
Forfeited during the period (in shares)	(500)	0
Nonvested at the end of the period (in shares)	26,250	27,750
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 11.92	$ 11.34
Granted during the period (in dollars per share)	0.00	0.00
Vested during the period (in dollars per share)	10.85	10.00
Forfeited during the period (in dollars per share)	10.85	0.00
Nonvested at the end of the period (in dollars per share)	$ 11.98	$ 11.92
Additional disclosures
Unrecognized compensation expense	$ 37	$ 111	$ 90
Requisite service period to recognize compensation cost	5 months 27 days

Stock and Incentive Plan - Omnibus Plan (Details) - Omnibus Plan - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2014
Stock and Incentive Plans
Number of shares authorized (in shares)					1,000,000
Non-performance based restricted stock units
Stock and Incentive Plans
Number of shares awarded (in shares)			37,625	25,060
Non-performance based restricted stock units \| Equal annual installments, tranche one
Stock and Incentive Plans
Vesting period			3 years
Non-performance based restricted stock units \| No market condition \| Minimum
Stock and Incentive Plans
Vesting period			1 year
Non-performance based restricted stock units \| No market condition \| Maximum
Stock and Incentive Plans
Vesting period			5 years
Performance based restricted stock units
Stock and Incentive Plans
Number of shares awarded (in shares)			25,522	34,190
Performance based restricted stock units \| Market condition based on the Company's total shareholder return relative to a market index
Stock and Incentive Plans
Vesting period			3 years
Stock option
Stock and Incentive Plans
Number of shares awarded under stock options (in shares)			70,440	76,286
Stock based compensation expense	$ 102	$ 55	$ 296	$ 159
Market condition restricted stock units
Stock and Incentive Plans
Number of shares awarded (in shares)				34,190
Restricted stock units
Stock and Incentive Plans
Stock based compensation expense	$ 286	$ 198	$ 841	$ 302

Stock and Incentive Plan - Omnibus Plan Black Scholes Assumptions - (Details) - Omnibus Plan	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
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)	31.60%	35.23%
Expected volatility, maximum (as a percent)	37.55%	37.55%
Risk-free interest rate, minimum (as a percent)	1.06%	1.26%
Risk-free interest rate, maximum (as a percent)	2.32%	2.01%
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	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	6 years 6 months

Stock and Incentive Plan - Omnibus Plan - Options (Details) - Omnibus Plan - Nonperformance-based stock options - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Shares Underlying Options
Outstanding at beginning of period (in shares)	128,366	52,080	52,080
Granted during the period (in shares)	70,440	76,286
Forfeited during the period (in shares)	(3,465)	0
Canceled during the period (in shares)	0	0
Exercised during the period (in shares)	(1,544)	0
Outstanding at the end of period (in shares)	193,797	128,366	128,366	52,080
Options exercisable at end of period (in shares)	53,804.29	16,293
Weighted Exercise Price
Outstanding at beginning of period (in dollars per share)	$ 15.32	$ 14.35	$ 14.35
Granted during the period (in dollars per share)	26.87	15.98
Forfeited during the period (in dollars per share)	21.24	0.00
Canceled during the period (in dollars per share)	0.00	0.00
Exercised during the period (in dollars per share)	15.00	0.00
Outstanding at the end of period (in dollars per share)	19.34	15.32	$ 15.32	$ 14.35
Options exercisable at end of period (in dollars per share)	15.01	14.28
Weighted average fair value of options granted during the period (in dollars per share)	$ 11.38	$ 5.69
Weighted Average Contractual Term
Weighted Average Contractual Term	8 years 5 months 12 days	8 years 11 months 9 days	8 years 8 months 9 days	9 years 1 month 13 days
Weighted Average Contractual Term	7 years 8 months 27 days	8 years 3 months 29 days
Additional disclosures
Aggregate intrinsic value of outstanding stock options	$ 1,482	$ 266	$ 1,462
Aggregate intrinsic value of exercisable stock options	$ 643	$ 51	$ 203

Stock and Incentive Plan - Omnibus Plan - Restricted Stock Units (Details) - Omnibus Plan - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Non-performance based restricted stock units
Units
Nonvested at the beginning of the period (in shares)	67,956	70,919
Granted during the period (in shares)	37,625	25,060
Vested during the period (in shares)	(14,550)	(9,716)
Forfeited during the period (in shares)	(2,250)	0
Nonvested at the end of the period (in shares)	88,781	86,263
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 13.79	$ 13.29
Granted during the period (in dollars per share)	27.37	15.83
Vested during the period (in dollars per share)	24.67	16.04
Forfeited during the period (in dollars per share)	27.93	0.00
Nonvested at the end of the period (in dollars per share)	$ 17.41	$ 13.72
Additional disclosures
Fair value of vested restricted stock units	$ 395	$ 159
Performance based restricted stock units
Units
Nonvested at the beginning of the period (in shares)	51,197	25,474
Granted during the period (in shares)	25,522	34,190
Vested during the period (in shares)	(19,861)	(8,467)
Forfeited during the period (in shares)	(2,014)	0
Nonvested at the end of the period (in shares)	54,844	51,197
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)	$ 8.72	$ 9.45
Granted during the period (in dollars per share)	24.34	9.52
Vested during the period (in dollars per share)	15.34	14.17
Forfeited during the period (in dollars per share)	15.68	0.00
Nonvested at the end of the period (in dollars per share)	$ 13.33	$ 8.72
Additional disclosures
Fair value of vested restricted stock units	$ 530	$ 137
Stock option
Additional disclosures
Unrecognized compensation expense	$ 832	478	$ 425
Requisite service period to recognize compensation cost	2 years 3 months 11 days
Restricted stock units
Additional disclosures
Unrecognized compensation expense	$ 1,805	1,373	$ 1,089
Requisite service period to recognize compensation cost	2 years 2 months 16 days
Nonperformance-based stock options
Additional disclosures
Fair value of exercised non-performance based options	$ 41	$ 0

Capital Requirements and Restrictions on Retained Earnings (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Total capital (to risk weighted assets)
Actual Amount	$ 328,915	$ 228,566
Actual Ratio (as a percent)	14.87%	22.02%
For Capital Adequacy Purposes Amount	$ 176,955	$ 83,039
For Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
Tier 1 capital (to risk weighted assets)
Actual Amount	$ 313,437	$ 215,057
Actual Ratio (as a percent)	14.17%	20.72%
For Capital Adequacy Purposes Amount	$ 132,719	$ 62,275
For Capital Adequacy Purposes Ratio (as a percent)	6.00%	6.00%
Common equity tier 1 to risk weighted assets
Actual Amount	$ 301,735	$ 211,964
Actual Ratio (as a percent)	13.65%	20.42%
For Capital Adequacy Purposes Amount	$ 99,473	$ 46,711
For Capital Adequacy Purposes Amount (as a percent)	4.50%	4.50%
Tier 1 capital (to average assets)
Actual Amount	$ 313,437	$ 215,057
Actual Ratio (as a percent)	15.26%	16.82%
For Capital Adequacy Purposes Amount	$ 82,159	$ 51,143
For Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
Bank
Total capital (to risk weighted assets)
Actual Amount	$ 255,756	$ 130,237
Actual Ratio (as a percent)	11.57%	12.55%
For Capital Adequacy Purposes Amount	$ 176,841	$ 83,020
For Capital Adequacy Purposes Ratio (as a percent)	8.00%	8.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 221,051	$ 103,775
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	$ 245,264	$ 121,713
Actual Ratio (as a percent)	11.10%	11.73%
For Capital Adequacy Purposes Amount	$ 132,575	$ 62,257
For Capital Adequacy Purposes Ratio (as a percent)	6.00%	6.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 176,767	$ 83,010
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	$ 245,264	$ 121,713
Actual Ratio (as a percent)	11.10%	11.73%
For Capital Adequacy Purposes Amount	$ 99,431	$ 46,693
For Capital Adequacy Purposes Amount (as a percent)	4.50%	4.50%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 143,623	$ 67,445
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	$ 245,264	$ 121,713
Actual Ratio (as a percent)	11.95%	9.52%
For Capital Adequacy Purposes Amount	$ 82,097	$ 51,140
For Capital Adequacy Purposes Ratio (as a percent)	4.00%	4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions Amount	$ 102,621	$ 63,925
To Be Well Capitalized Under Prompt Corrective Action Provisions Ratio (as a percent)	5.00%	5.00%

Business Combinations - Narrative (Details)			3 Months Ended	9 Months Ended
Business Combinations - Narrative (Details)	Aug. 08, 2017 USD ($) $ / shares shares	Aug. 01, 2017 USD ($) branch shares	Sep. 30, 2017 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Jul. 31, 2017 shares	Jun. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Business Acquisition [Line Items]
Goodwill			$ 135,832,000	$ 135,832,000				$ 26,865,000	$ 26,865,000
Merger-related expenses				1,435,000	$ 195,000
Preferred stock dividends				42,000
Payment of preferred stock dividends				227,000	$ 0
Assets			2,494,861,000	2,494,861,000				1,408,507,000
Deposits			1,985,658,000	1,985,658,000				$ 1,119,630,000
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
Goodwill		108,967,000
Goodwill, expected to be tax deductible		0
Intangible assets		$ 8,662,000
Acquired intangible assets, weighted average useful life		10 years
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		1,450,000
Cash paid to acquire business		$ 25,000,000
Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Assets							$ 459,300,000
Deposits							$ 389,400,000
Dallas-Fort Worth \| Liberty Bancshares, Inc.
Business Acquisition [Line Items]
Number of bank branches acquired \| branch		5
Senior Non-Cumulative Perpetual Preferred Stock, Series C \| Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Preferred stock, shares issued \| shares						24,500
Preferred stock, shares outstanding \| shares						24,500
Senior Non-Cumulative Perpetual Preferred Stock, Series C \| Sovereign Bancshares, Inc. \| Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Number of shares to be converted (in shares) \| shares		24,500
Series D Preferred Stock
Business Acquisition [Line Items]
Business combination total redemption amount				$ 24,500,000
Series D Preferred Stock \| Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Number of shares conversion ratio		1
Stock redeemed during the period (in shares) \| shares	24,500
Liquidation per share value (USD per share) \| $ / shares	$ 1,000,000
Business combination total redemption amount	$ 24,727,000	$ 24,500,000
Preferred stock dividends		$ 185,000
Payment of preferred stock dividends			$ 227,000
Corporate bonds \| Floating Rate Junior Subordinated Debentures \| London Interbank Offered Rate (LIBOR) \| Sovereign Bancshares, Inc.
Business Acquisition [Line Items]
Debt instrument, basis spread on variable rate		4.00%

Business Combinations - Acquired Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands			9 Months Ended
	Aug. 08, 2017	Aug. 01, 2017	Sep. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Goodwill			$ 135,832	$ 26,865	$ 26,865
Sovereign Bancshares, Inc.
Assets
Cash and cash equivalents		$ 44,775
Investment securities		166,307
Loans		750,856
Accrued interest receivable		3,437
Bank premises, furniture and equipment		21,512
Non-marketable equity securities		6,751
Other real estate owned		282
Intangible assets		8,662
Goodwill		108,967
Other assets		10,331
Total Assets		1,121,880
Liabilities
Deposits		809,366
Accounts payable and accrued expenses		5,189
Accrued interest payable and other liabilities		1,616
Advances from Federal Home Loan Bank		80,000
Junior subordinated debentures		8,609
Total liabilities		904,780
Consideration
Market value of common stock issued		136,385
Cash paid		56,215
Total fair value of consideration		192,600
Series D Preferred Stock
Liabilities
Business combination total redemption amount			$ 24,500
Series D Preferred Stock \| Sovereign Bancshares, Inc.
Liabilities
Business combination total redemption amount	$ 24,727	$ 24,500

Business Combinations - Loans Acquired (Details) - Sovereign Bancshares, Inc. $ in Thousands	Aug. 01, 2017 USD ($)
Business Acquisition [Line Items]
Total fair value	$ 750,856
Contractual principal balance	775,056
PCI loans
Business Acquisition [Line Items]
Total fair value	33,021
Contractual principal balance	50,527
Contractually required principal and interest	56,809
Non-accretable and accretable difference	23,788
Real Estate
Business Acquisition [Line Items]
Total fair value	538,025
Real Estate \| PCI loans
Business Acquisition [Line Items]
Total fair value	5,906
Commercial
Business Acquisition [Line Items]
Total fair value	211,588
Commercial \| PCI loans
Business Acquisition [Line Items]
Total fair value	27,115
Consumer
Business Acquisition [Line Items]
Total fair value	1,243
Consumer \| PCI loans
Business Acquisition [Line Items]
Total fair value	0
Other acquired loans
Business Acquisition [Line Items]
Total fair value	717,835
Contractual principal balance	724,529
Other acquired loans \| Real Estate
Business Acquisition [Line Items]
Total fair value	532,119
Other acquired loans \| Commercial
Business Acquisition [Line Items]
Total fair value	184,473
Other acquired loans \| Consumer
Business Acquisition [Line Items]
Total fair value	$ 1,243

Business Combinations - Summary of Intangible Assets Acquired (Details) - Sovereign Bancshares, Inc. $ in Thousands	Aug. 01, 2017 USD ($)
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 8,662
Core deposit intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	7,703
Servicing asset
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	454
Intangible lease assets
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets	$ 505

Intangbile Assets and Goodwill - Summary Of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Asset	$ 13,314	$ 4,379
Accumulated Amortization	2,783	2,198
Net Intangible Asset	$ 10,531	$ 2,181
Core deposit intangibles
Finite-Lived Intangible Assets [Line Items]
Weighted Amortization Period	9 years 4 months 24 days	6 years 1 month 28 days
Gross Intangible Asset	$ 11,162	$ 3,459
Accumulated Amortization	2,340	1,914
Net Intangible Asset	$ 8,822	$ 1,545
Servicing asset
Finite-Lived Intangible Assets [Line Items]
Weighted Amortization Period	6 years 8 months 12 days	7 years 11 months 5 days
Gross Intangible Asset	$ 1,541	$ 814
Accumulated Amortization	343	213
Net Intangible Asset	$ 1,198	$ 601
Intangible lease assets
Finite-Lived Intangible Assets [Line Items]
Weighted Amortization Period	3 years 9 months	4 years 3 months 18 days
Gross Intangible Asset	$ 611	$ 106
Accumulated Amortization	100	71
Net Intangible Asset	$ 511	$ 35

Intangible Assets and Goodwill - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 223	$ 95	$ 413	$ 285
Amortization Of Intangible Assets Occupancy And Equipment And Other Income
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets			$ 585	$ 421

Intangible Assets and Goodwill Intangible Assets and Goodwill - Goodwill Rollforward (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Goodwill [Roll Forward]
Beginning of year	$ 26,865	$ 26,865
Effect of acquisition	108,967	0
End of period	$ 135,832	$ 26,865

Loans and Allowance for Loan Losses - Past Due (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	$ 4,883,000	$ 4,880,000
Total Current	1,902,626,000	987,017,000
Total Loans	1,907,509,000	991,897,000
Total 90 Days Past Due and Still Accruing	54,000	835,000
30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	2,597,000	2,942,000
60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	462,000	652,000
90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	1,824,000	1,286,000
Commercial
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	3,622,000	2,314,000
Total Current	574,136,000	289,102,000
Total Loans	577,758,000	291,416,000
Total 90 Days Past Due and Still Accruing		81,000
Commercial \| 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	2,138,000	1,344,000
Commercial \| 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	447,000	438,000
Commercial \| 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	1,037,000	532,000
Consumer
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	48,000	41,000
Total Current	4,081,000	4,048,000
Total Loans	4,129,000	4,089,000
Total 90 Days Past Due and Still Accruing	0	0
Consumer \| 30 to 59 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	27,000	41,000
Consumer \| 60 to 89 Days
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	15,000	0
Consumer \| 90 Days or Greater
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	6,000	0
Construction and land \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	0	1,047,000
Total Current	276,670,000	161,567,000
Total Loans	276,670,000	162,614,000
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	0	1,047,000
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	0	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	0
Total Current	6,572,000	8,262,000
Total Loans	6,572,000	8,262,000
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	0
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	239,948,000	154,820,000
Commercial Real Estate \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Past Due	793,000	754,000
Total Current	801,639,000	369,942,000
Total Loans	802,432,000	370,696,000
Total 90 Days Past Due and Still Accruing	0	754,000
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	66,000	0
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	727,000	754,000
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	420,000	724,000
Total Current	185,053,000	139,413,000
Total Loans	185,473,000	140,137,000
Total 90 Days Past Due and Still Accruing	54,000	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	366,000	510,000
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	0	214,000
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	54,000	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	54,475,000	14,683,000
Total Loans	54,475,000	14,683,000
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	32,204,000	0
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		3,300,000
PCI loans \| Commercial
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	26,446,000	0
PCI loans \| Consumer
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	0	0
PCI loans \| Construction and land \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	0
PCI loans \| Farmland \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	0
PCI loans \| Real estate \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	0	0
PCI loans \| Commercial Real Estate \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	5,758,000	$ 0
PCI loans \| 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 Loans	0
PCI loans \| Multi-family residential \| Real estate \| Real Estate
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	0
Nonperforming Financial Instruments \| PCI loans
Age analysis of past due loans, excluding purchased credit impaired loans, aggregated by class of loans
Total Loans	$ 0

Loans and Allowance for Loan Losses - Troubled Debt Restructuring (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) Loan	Sep. 30, 2016 USD ($) Loan	Dec. 31, 2016 USD ($)
Financing Receivable, Modifications [Line Items]
Recorded investment in TDRs	$ 626		$ 822
Number of Loans \| Loan		2
Pre- Modification Outstanding Recorded Investment		$ 175
Valuation allowance for restructured loans		$ 38
Number of loans modified as TDRs for which there was a payment default \| Loan	0	0
Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		169
Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Real Estate \| Construction and land
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		0
Pre- Modification Outstanding Recorded Investment		$ 0
Real Estate \| Construction and land \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Construction and land \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Construction and land \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Construction and land \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Real Estate \| Farmland
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		0
Pre- Modification Outstanding Recorded Investment		$ 0
Real Estate \| Farmland \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Farmland \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Farmland \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Farmland \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Real Estate \| Commercial Real Estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		0
Pre- Modification Outstanding Recorded Investment		$ 0
Real Estate \| Commercial Real Estate \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Commercial Real Estate \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Commercial Real Estate \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Real Estate \| Commercial Real Estate \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Commercial
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		2
Pre- Modification Outstanding Recorded Investment		$ 175
Commercial \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Commercial \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Commercial \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		169
Commercial \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Consumer
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		0
Pre- Modification Outstanding Recorded Investment		$ 0
Consumer \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Consumer \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Consumer \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Consumer \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
1 - 4 family residential \| Real Estate \| Real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		0
Pre- Modification Outstanding Recorded Investment		$ 0
1 - 4 family residential \| Real Estate \| Real estate \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
1 - 4 family residential \| Real Estate \| Real estate \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
1 - 4 family residential \| Real Estate \| Real estate \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
1 - 4 family residential \| Real Estate \| Real estate \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0
Multi-family residential \| Real Estate \| Real estate
Financing Receivable, Modifications [Line Items]
Number of Loans \| Loan		0
Pre- Modification Outstanding Recorded Investment		$ 0
Multi-family residential \| Real Estate \| Real estate \| Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Multi-family residential \| Real Estate \| Real estate \| Extended Maturity
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Multi-family residential \| Real Estate \| Real estate \| Extended Maturity and Restructured Payments
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		0
Multi-family residential \| Real Estate \| Real estate \| Extended Maturity, Restructured Payments and Adjusted Interest Rate
Financing Receivable, Modifications [Line Items]
Post-Modification Outstanding Recorded Investment		$ 0