Allegiance Bancshares (ABTX) 10-Q 3 Aug 17 2017 Q2 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	6 Months Ended
	Jun. 30, 2017	Jul. 31, 2017
Document And Entity Information
Entity Registrant Name	Allegiance Bancshares, Inc.
Entity Central Index Key	1,642,081
Trading Symbol	abtx
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding (in shares)		13,161,490

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
ASSETS
Cash and due from banks	$ 141,952	$ 94,073
Interest-bearing deposits at other financial institutions	45,539	48,025
Total cash and cash equivalents	187,491	142,098
Available for sale securities, at fair value	321,268	316,455
Loans held for investment	2,114,652	1,891,635
Less: allowance for loan losses	(21,010)	(17,911)
Loans, net	2,093,642	1,873,724
Accrued interest receivable	9,284	9,007
Premises and equipment, net	18,240	18,340
Other real estate owned	365	1,503
Federal Home Loan Bank stock	16,675	13,175
Bank owned life insurance	22,131	21,837
Goodwill	39,389	39,389
Core deposit intangibles, net	3,664	4,055
Other assets	12,567	11,365
TOTAL ASSETS	2,724,716	2,450,948
Deposits:
Noninterest-bearing	662,527	593,751
Interest-bearing
Demand	163,443	114,772
Money market and savings	509,533	483,266
Certificates and other time	763,739	678,394
Total interest-bearing deposits	1,436,715	1,276,432
Total deposits	2,099,242	1,870,183
Accrued interest payable	466	285
Borrowed funds	310,569	285,569
Subordinated debentures	9,249	9,196
Other liabilities	6,731	5,898
Total liabilities	2,426,257	2,171,131
COMMITMENTS AND CONTINGENCIES (See Note 12)
SHAREHOLDERS’ EQUITY:
Preferred stock, $1 par value; 1,000,000 shares authorized; there were no shares issued or outstanding	0	0
Common stock, $1 par value; 40,000,000 shares authorized; 13,153,053 shares issued and outstanding at June 30, 2017 and 12,958,341 shares issued and outstanding at December 31, 2016	13,153	12,958
Capital surplus	216,158	212,649
Retained earnings	68,704	57,262
Accumulated other comprehensive income (loss)	444	(3,052)
Total shareholders’ equity	298,459	279,817
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 2,724,716	$ 2,450,948

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	40,000,000	40,000,000
Common stock, shares issued (in shares)	13,153,053	12,958,341
Common stock, shares outstanding (in shares)	13,153,053	12,958,341
Series A Preferred Stock
Shares issued (in shares)	0	0
Shares outstanding (in shares)	0	0
Series B Preferred Stock
Shares issued (in shares)	0	0
Shares outstanding (in shares)	0	0

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
INTEREST INCOME:
Loans, including fees	$ 26,736	$ 22,839	$ 51,996	$ 45,067
Securities:
Taxable	503	452	1,001	723
Tax-exempt	1,591	1,086	3,215	1,896
Deposits in other financial institutions	157	150	287	292
Total interest income	28,987	24,527	56,499	47,978
INTEREST EXPENSE:
Demand, money market and savings deposits	702	569	1,356	1,113
Certificates and other time deposits	2,283	1,665	4,240	3,225
Borrowed funds	761	224	1,414	370
Subordinated debentures	134	120	254	237
Total interest expense	3,880	2,578	7,264	4,945
NET INTEREST INCOME	25,107	21,949	49,235	43,033
Provision for loan losses	3,007	1,645	4,350	2,355
Net interest income after provision for loan losses	22,100	20,304	44,885	40,678
NONINTEREST INCOME:
Nonsufficient funds fees	184	145	383	308
Service charges on deposit accounts	205	173	400	318
Gain on sale of branch assets	0	0	0	2,050
Bank owned life insurance income	146	153	294	319
Other	942	741	1,741	1,521
Total noninterest income	1,477	1,212	2,818	4,516
NONINTEREST EXPENSE:
Salaries and employee benefits	10,415	9,177	20,977	18,450
Net occupancy and equipment	1,302	1,214	2,729	2,446
Depreciation	398	415	798	832
Data processing and software amortization	719	622	1,414	1,275
Professional fees	987	401	1,882	935
Regulatory assessments and FDIC insurance	569	355	1,158	700
Core deposit intangibles amortization	196	195	391	394
Communications	233	274	480	554
Advertising	288	197	551	398
Other	1,354	1,073	2,630	2,192
Total noninterest expense	16,461	13,923	33,010	28,176
INCOME BEFORE INCOME TAXES	7,116	7,593	14,693	17,018
Provision for income taxes	1,721	2,339	3,251	5,409
NET INCOME	$ 5,395	$ 5,254	$ 11,442	$ 11,609
EARNINGS PER SHARE:
Basic (in dollars per share)	$ 0.41	$ 0.41	$ 0.88	$ 0.90
Diluted (in dollars per share)	$ 0.40	$ 0.40	$ 0.85	$ 0.89

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net income	$ 5,395	$ 5,254	$ 11,442	$ 11,609
Unrealized gain on securities:
Change in unrealized holding gain on available for sale securities during the period	4,183	6,232	5,380	7,435
Total other comprehensive income	4,183	6,232	5,380	7,435
Deferred tax benefit related to other comprehensive income	(1,465)	(2,181)	(1,884)	(2,602)
Other comprehensive income, net of tax	2,718	4,051	3,496	4,833
Comprehensive income	$ 8,113	$ 9,305	$ 14,938	$ 16,442

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock
Balance (in shares) at Dec. 31, 2015		12,814,696
Balance at Dec. 31, 2015	$ 258,490	$ 12,815	$ 209,285	$ 34,411	$ 2,017	$ (38)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,609			11,609
Other comprehensive income	4,833				4,833
Common stock issued in connection with the exercise of stock options and restricted stock awards (in shares)		54,714
Common stock issued in connection with the exercise of stock options and restricted stock awards	574	$ 54	520
Repurchase of treasury stock	38					38
Stock based compensation expense	707		707
Balance (in shares) at Jun. 30, 2016		12,869,410
Balance at Jun. 30, 2016	276,251	$ 12,869	210,512	46,020	6,850	0
Balance (in shares) at Dec. 31, 2016		12,958,341
Balance at Dec. 31, 2016	279,817	$ 12,958	212,649	57,262	(3,052)	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,442			11,442
Other comprehensive income	3,496				3,496
Common stock issued in connection with the exercise of stock options and restricted stock awards (in shares)		194,712
Common stock issued in connection with the exercise of stock options and restricted stock awards	2,907	$ 195	2,712
Stock based compensation expense	797		797
Balance (in shares) at Jun. 30, 2017		13,153,053
Balance at Jun. 30, 2017	$ 298,459	$ 13,153	$ 216,158	$ 68,704	$ 444	$ 0

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 11,442	$ 11,609
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and core deposit intangibles amortization	1,189	1,226
Provision for loan losses	4,350	2,355
Excess tax benefit related to the exercise of stock options	(959)	0
Net amortization of premium on investments	1,678	1,329
Bank owned life insurance	(294)	(319)
Net accretion of discount on loans	(408)	(904)
Net amortization of discount on subordinated debentures	53	53
Net amortization of discount on certificates of deposit	(3)	(175)
Net gain on sale of branch assets	0	(2,050)
Federal Home Loan Bank stock dividends	(118)	(32)
Stock based compensation expense	797	707
Increase in accrued interest receivable and other assets	(3,004)	(3,549)
Increase in accrued interest payable and other liabilities	1,973	1,246
Net cash provided by operating activities	16,696	11,496
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities and principal paydowns of available for sale securities	2,004,385	1,962,150
Proceeds from sales of available for sale securities	9,000	0
Purchase of available for sale securities	(2,014,496)	(2,094,410)
Net change in total loans	(222,722)	(91,751)
Purchase of bank premises and equipment	(1,057)	(196)
Net purchases of Federal Home Loan Bank stock	(3,382)	(10,985)
Net cash paid for the sale of branch assets	0	(5,250)
Net cash used in investing activities	(228,272)	(240,442)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in noninterest-bearing deposits	68,776	16,897
Net increase in interest-bearing deposits	160,286	93,869
Proceeds from borrowed funds	25,000	200,000
Paydowns on borrowed funds	0	(20,000)
Proceeds from the issuance of common stock, stock option exercises, restricted stock awards and the ESPP	2,907	574
Issuance of treasury stock	0	38
Net cash provided by financing activities	256,969	291,378
NET CHANGE IN CASH AND CASH EQUIVALENTS	45,393	62,432
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	142,098	148,431
CASH AND CASH EQUIVALENTS, END OF PERIOD	187,491	210,863
SUPPLEMENTAL INFORMATION:
Income taxes paid	3,100	6,100
Interest paid	$ 7,080	$ 2,298

NATURE OF OPERATIONS AND SUMMAR

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES	NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES Nature of Operations -Allegiance Bancshares, Inc. (“Allegiance”) and its wholly-owned subsidiary, Allegiance Bank, (the “Bank”, and together with Allegiance, collectively referred to as the “Company”) provide commercial and retail loans and commercial banking services. The Company derives substantially all of its revenues and income from the operation of the Bank. The Company is focused on delivering a wide variety of relationship-driven commercial banking products and community-oriented services tailored to meet the needs of small to mid-sized businesses, professionals and individuals through its 16 offices and one loan production office in Houston, Texas and the surrounding region. The Bank provides its customers with a variety of banking services including checking accounts, savings accounts and certificates of deposit, and its primary lending products are commercial, personal, automobile, mortgage and home improvement loans. The Bank also offers safe deposit boxes, automated teller machines, drive-through services and 24-hour depository facilities. Basis of Presentation -The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and in accordance with guidance provided by the Securities and Exchange Commission. Accordingly, the condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows of the Company on a consolidated basis, and all such adjustments are of a normal recurring nature. Transactions with Allegiance have been eliminated. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 . Operating results for the three and six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 . Significant Accounting and Reporting Policies The Company’s significant accounting and reporting policies can be found in Note 1 of the Company’s annual financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 . New Accounting Standards Newly Issued But Not Yet Effective Accounting Standards ASU 2014-09 “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and most industry-specific guidance throughout the Industry Topics of the Codification. 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 is effective for the Company beginning on January 1, 2018, with retrospective application to each prior reporting period presented. The Company expects to adopt ASU 2014-09 in the first quarter 2018 using the modified retrospective approach, which includes presenting the cumulative effect of initial application along with supplementary disclosures. The Company is evaluating the full effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures; however, adoption of the ASU is not expected to have a significant impact. The Company’s primary sources of revenues are derived from interest and dividends earned on loans, investment securities and other financial instruments that are not within the scope of ASU 2014-09. ASU 2016-02 “Leases (Topic 842)." ASU 2016-02 will, among other things, require lessees to recognize a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 does not significantly change lease accounting requirements applicable to lessors; however, certain changes were made to align, where necessary, lessor accounting with the lessee accounting model and ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2016-02 will be effective for the Company on January 1, 2019 and will require transition using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Early application of this ASU is permitted for all entities. Adoption of ASU 2016-02 is not expected to have a material impact on the Company’s financial statements. The Company leases certain properties and equipment under operating leases that will result in the recognition of lease assets and lease liabilities on the Company’s balance sheet under the ASU. ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” Among other things, ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better form their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, ASU 2016-13 amends the accounting for credit losses on available for sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for the Company on January 1, 2020 and must be applied using the modified retrospective approach with limited exceptions. Early adoption is permitted for fiscal years, and interim periods within those years, beginning after December 15, 2018. The Company is currently assessing the impact that the adoption of this standard will have on the financial condition and results of operations of the Company. The Company has formed a team that is assessing its data and system needs and is evaluating the impact of adoption. The Company expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective, but has not yet determined the magnitude of any such one-time adjustment or the overall impact on the Company’s financial statements. ASU No. 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment,” ASU 2017-04 intends to simplify goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. The update instead requires entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit’s fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. ASU 2017-04 must be applied prospectively and is effective for the Company on January 1, 2020. Early adoption is permitted. The Company does not expect the new guidance to have a material impact on its financial condition or results of operation. ASU 2017-08 “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. ASU 2017-08 will be effective for the Company on January 1, 2019, with early adoption permitted. The Company is currently evaluating the potential impact of ASU 2017-08 on its financial statements.

ACQUISITIONS

ACQUISITIONS	6 Months Ended
	Jun. 30, 2017
Business Combinations [Abstract]
ACQUISITIONS	ACQUISITIONS Acquisition of F&M Bancshares - On January 1, 2015, the Company completed the acquisition of F&M Bancshares, Inc. (“F&M Bancshares”) and its wholly-owned subsidiary Enterprise Bank (“Enterprise”) headquartered in Houston, Texas. Enterprise operated nine bank offices, seven in Houston, Texas and two in Central Texas. During the first quarter of 2016, the Bank completed the sale of the two Central Texas branch locations of Enterprise. The Bank sold $18.2 million and $26.6 million of loans and deposits, respectively, and recorded a gain of approximately $2.1 million on the sale of these branches.

GOODWILL AND CORE DEPOSIT INTAN

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS	GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS Changes in the carrying amount of the Company’s goodwill and core deposit intangible assets were as follows: Goodwill Core Deposit Intangibles (Dollars in thousands) Balance as of January 1, 2016 $ 39,389 $ 5,230 Sale of branch assets — (390 ) Amortization — (785 ) Balance as of December 31, 2016 39,389 4,055 Amortization — (391 ) Balance as of June 30, 2017 $ 39,389 $ 3,664 Goodwill is recorded on the acquisition date of an entity. Management performs an evaluation annually, and more frequently if a triggering event occurs, of whether any impairment of the goodwill and other intangible assets has occurred. If any such impairment is determined, a write-down is recorded. As of June 30, 2017 , there were no impairments recorded on goodwill and other intangible assets. During the first quarter 2016, the Bank completed the sale of the two Central Texas branch locations of Enterprise in 2015 and wrote-down the core deposit intangible assets related to those locations. The estimated aggregate future amortization expense for core deposit intangible assets remaining as of June 30, 2017 is as follows (dollars in thousands): Remaining 2017 $ 391 2018 781 2019 781 2020 744 2021 484 Thereafter 483 Total $ 3,664

SECURITIES

SECURITIES	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES The amortized cost and fair value of investment securities were as follows: June 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) Available for Sale U.S. Government and agency securities $ 8,722 $ 307 $ (24 ) $ 9,005 Municipal securities 239,282 2,694 (2,359 ) 239,617 Agency mortgage-backed pass-through securities 27,991 218 (302 ) 27,907 Corporate bonds and other 44,589 184 (34 ) 44,739 Total $ 320,584 $ 3,403 $ (2,719 ) $ 321,268 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) Available for Sale U.S. Government and agency securities $ 5,883 $ 266 $ — $ 6,149 Municipal securities 242,501 956 (5,655 ) 237,802 Agency mortgage-backed pass-through securities 27,496 265 (437 ) 27,324 Corporate bonds and other 45,271 77 (168 ) 45,180 Total $ 321,151 $ 1,564 $ (6,260 ) $ 316,455 As of June 30, 2017 , the Company’s management does not expect to sell any securities classified as available for sale with material unrealized losses, and the Company believes it is more likely than not it will not be required to sell any of these securities before their anticipated recovery, at which time the Company will receive full value for the securities. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. Management does not believe any of the securities are impaired due to reasons of credit quality. Accordingly, as of June 30, 2017 , management believes the unrealized losses in the previous table are temporary and no other than temporary impairment loss has been realized in the Company’s consolidated statements of income. The amortized cost and fair value of investment securities at June 30, 2017 , by contractual maturity, are shown below. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations at any time with or without call or prepayment penalties. Amortized Cost Fair Value (Dollars in thousands) Due in one year or less $ 11,110 $ 11,136 Due after one year through five years 62,750 63,060 Due after five years through ten years 96,802 97,349 Due after ten years 121,931 121,816 Subtotal 292,593 293,361 Agency mortgage-backed pass through securities 27,991 27,907 Total $ 320,584 $ 321,268 Securities with unrealized losses segregated by length of time such securities have been in a continuous loss position are as follows: June 30, 2017 Less than 12 Months More than 12 Months Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (Dollars in thousands) Available for Sale U.S. Government and agency securities $ 1,271 $ (24 ) $ — $ — $ 1,271 $ (24 ) Municipal securities 119,872 (2,359 ) — — 119,872 (2,359 ) Agency mortgage-backed pass-through securities 12,779 (228 ) 2,613 (74 ) 15,392 (302 ) Corporate bonds and other 12,093 (34 ) — — 12,093 (34 ) Total $ 146,015 $ (2,645 ) $ 2,613 $ (74 ) $ 148,628 $ (2,719 ) December 31, 2016 Less than 12 Months More than 12 Months Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (Dollars in thousands) Available for Sale U.S. Government and agency securities $ — $ — $ — $ — $ — $ — Municipal securities 178,876 (5,655 ) — — 178,876 (5,655 ) Agency mortgage-backed pass-through securities 12,520 (347 ) 2,803 (90 ) 15,323 (437 ) Corporate bonds and other 24,629 (168 ) — — 24,629 (168 ) Total $ 216,025 $ (6,170 ) $ 2,803 $ (90 ) $ 218,828 $ (6,260 ) During the three and six months ended June 30, 2017, the Company sold $9.0 million of corporate bonds with a minimal gain recognized. No securities were sold during the three and six months ended June 30, 2016. At June 30, 2017 and December 31, 2016 , the Company did not own securities of any one issuer, other than the U.S government and its agencies, in an amount greater than 10% of consolidated shareholders’ equity at such respective dates. The carrying value of pledged securities was $5.0 million at June 30, 2017 and $4.9 million at December 31, 2016 . The securities are pledged to further collateralize letters of credit issued by the Bank but confirmed by another financial institution.

LOANS AND ALLOWANCE FOR LOAN LO

LOANS AND ALLOWANCE FOR LOAN LOSSES	6 Months Ended
	Jun. 30, 2017
Loans and Allowance for Loan Losses [Abstract]
LOANS AND ALLOWANCE FOR LOAN LOSSES	LOANS AND ALLOWANCE FOR LOAN LOSSES The loan portfolio balances, net of unearned income and fees, consist of various types of loans primarily made to borrowers located within Texas and are classified by major type as follows: June 30, December 31, (Dollars in thousands) Commercial and industrial $ 444,701 $ 416,752 Mortgage warehouse 73,499 67,038 Real estate: Commercial real estate (including multi-family residential) 1,008,027 891,989 Commercial real estate construction and land development 206,024 159,247 1-4 family residential (including home equity) 267,939 246,987 Residential construction 102,832 98,657 Consumer and other 11,630 10,965 Total loans 2,114,652 1,891,635 Allowance for loan losses (21,010 ) (17,911 ) Loans, net $ 2,093,642 $ 1,873,724 Nonaccrual and Past Due Loans An aging analysis of the recorded investment in past due loans, segregated by class of loans, is as follows: June 30, 2017 Loans Past Due and Still Accruing 30-89 Days 90 or More Days Total Past Due Loans Nonaccrual Loans Current Loans Total Loans (Dollars in thousands) Commercial and industrial $ 1,720 $ — $ 1,720 $ 9,051 $ 433,930 $ 444,701 Mortgage warehouse — — — — 73,499 73,499 Real estate: Commercial real estate (including multi-family residential) 3,563 — 3,563 9,556 994,908 1,008,027 Commercial real estate construction and land development 275 — 275 — 205,749 206,024 1-4 family residential (including home equity) 1,403 — 1,403 568 265,968 267,939 Residential construction 1,401 — 1,401 — 101,431 102,832 Consumer and other 12 — 12 155 11,463 11,630 Total loans $ 8,374 $ — $ 8,374 $ 19,330 $ 2,086,948 $ 2,114,652 December 31, 2016 Loans Past Due and Still Accruing 30-89 Days 90 or More Days Total Past Due Loans Nonaccrual Loans Current Loans Total Loans (Dollars in thousands) Commercial and industrial $ 1,028 $ 911 $ 1,939 $ 3,896 $ 410,917 $ 416,752 Mortgage warehouse — — — — 67,038 67,038 Real estate: Commercial real estate (including multi-family residential) 1,661 — 1,661 11,663 878,665 891,989 Commercial real estate construction and land development 263 — 263 — 158,984 159,247 1-4 family residential (including home equity) 280 — 280 217 246,490 246,987 Residential construction — — — — 98,657 98,657 Consumer and other 125 — 125 12 10,828 10,965 Total loans $ 3,357 $ 911 $ 4,268 $ 15,788 $ 1,871,579 $ 1,891,635 Impaired Loans Impaired loans by class of loans are set forth in the following tables. June 30, 2017 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 5,268 $ 6,194 $ — Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 8,835 8,835 — Commercial real estate construction and land development 210 210 — 1-4 family residential (including home equity) 568 568 — Residential construction — — — Consumer and other 5 5 — Total 14,886 15,812 — With an allowance recorded: Commercial and industrial 10,588 11,663 2,657 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 7,341 7,562 580 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) — — — Residential construction — — — Consumer and other 150 150 150 Total 18,079 19,375 3,387 Total: Commercial and industrial 15,856 17,857 2,657 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 16,176 16,397 580 Commercial real estate construction and land development 210 210 — 1-4 family residential (including home equity) 568 568 — Residential construction — — — Consumer and other 155 155 150 $ 32,965 $ 35,187 $ 3,387 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 5,300 $ 5,414 $ — Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 11,748 11,833 — Commercial real estate construction and land development — — — 1-4 family residential (including home equity) 217 217 — Residential construction — — — Consumer and other 5 5 — Total 17,270 17,469 — With an allowance recorded: Commercial and industrial 3,108 3,328 1,543 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 573 573 105 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) — — — Residential construction — — — Consumer and other 6 6 6 Total 3,687 3,907 1,654 Total: Commercial and industrial 8,408 8,742 1,543 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 12,321 12,406 105 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) 217 217 — Residential construction — — — Consumer and other 11 11 6 $ 20,957 $ 21,376 $ 1,654 The following table presents average impaired loans and interest recognized on impaired loans for the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, 2017 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income (Dollars in thousands) Commercial and industrial $ 16,758 $ 95 $ 5,748 $ 109 Mortgage warehouse — — — — Real estate: Commercial real estate (including multi-family residential) 16,239 103 11,221 164 Commercial real estate construction and land development 210 4 — — 1-4 family residential (including home equity) 571 — 229 (2 ) Residential construction — — — — Consumer and other 159 1 35 (1 ) Total $ 33,937 $ 203 $ 17,233 $ 270 Six Months Ended June 30, 2017 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income (Dollars in thousands) Commercial and industrial $ 17,004 $ 234 $ 5,959 $ 164 Mortgage warehouse — — — — Real estate: Commercial real estate (including multi-family residential) 16,338 180 11,599 222 Commercial real estate construction and land development 315 4 — — 1-4 family residential (including home equity) 572 1 233 8 Residential construction — — — — Consumer and other 160 1 38 1 Total $ 34,389 $ 420 $ 17,829 $ 395 Credit Quality Indicators The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, including factors such as: current financial information, historical payment experience, credit documentation, public information and current economic trends. The Company analyzes loans individually by classifying the loans by credit risk. As part of the ongoing monitoring of the credit quality of the Company’s loan portfolio and methodology for calculating the allowance for credit losses, management assigns and tracks risk ratings to be used as credit quality indicators. The following is a general description of the risk ratings used: Pass —Loans classified as pass are loans with low to average risk and not otherwise classified as watch, special mention, substandard or doubtful. In addition, the guaranteed portion of SBA loans are considered pass risk rated loans. Watch —Loans classified as watch loans may still be of high quality, but have an element of risk added to the credit such as declining payment history, deteriorating financial position of the borrower or a decrease in collateral value. Special Mention —Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Substandard —Loans classified as substandard have well-defined weaknesses on a continuing basis and are inadequately protected by the current net worth and paying capacity of the borrower, impaired or declining collateral values, or a continuing downturn in their industry which is reducing their profits to below zero and having a significantly negative impact on their cash flow. These classified loans are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful —Loans classified as doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full on the basis of currently existing facts, conditions and values highly questionable and improbable. Based on the most recent analysis performed, the risk category of loans by class of loan at June 30, 2017 is as follows: Pass Watch Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial and industrial $ 406,655 $ 11,003 $ 6,284 $ 20,759 $ — $ 444,701 Mortgage warehouse 73,499 — — — — 73,499 Real estate: Commercial real estate (including multi-family residential) 943,534 21,716 6,168 36,609 — 1,008,027 Commercial real estate construction and land development 195,180 5,643 144 5,057 — 206,024 1-4 family residential (including home equity) 262,972 848 1,474 2,645 — 267,939 Residential construction 100,756 1,559 517 — — 102,832 Consumer and other 11,256 168 3 203 — 11,630 Total loans $ 1,993,852 $ 40,937 $ 14,590 $ 65,273 $ — $ 2,114,652 The following table presents the risk category of loans by class of loan at December 31, 2016 : Pass Watch Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial and industrial $ 384,979 $ 11,784 $ 3,344 $ 16,645 $ — $ 416,752 Mortgage warehouse 67,038 — — — — 67,038 Real estate: Commercial real estate (including multi-family residential) 834,781 16,009 6,804 34,395 — 891,989 Commercial real estate construction and land development 149,010 8,124 — 2,113 — 159,247 1-4 family residential (including home equity) 242,208 512 2,069 2,198 — 246,987 Residential construction 97,808 — 415 434 — 98,657 Consumer and other 10,520 364 4 77 — 10,965 Total loans $ 1,786,344 $ 36,793 $ 12,636 $ 55,862 $ — $ 1,891,635 Allowance for Loan Losses The following table presents the activity in the allowance for loan losses by portfolio type for the three and six months ended June 30, 2017 and 2016 : Commercial and industrial Mortgage warehouse Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Allowance for loan losses: Three Months Ended Balance March 31, 2017 $ 5,284 $ — $ 9,158 $ 1,608 $ 1,846 $ 737 $ 54 $ 18,687 Provision for loan losses 1,692 — 170 276 142 98 629 3,007 Charge-offs (1,108 ) — — — — — — (1,108 ) Recoveries 414 — — 10 — — — 424 Net charge-offs (694 ) — — 10 — — — (684 ) Balance June 30, 2017 $ 6,282 $ — $ 9,328 $ 1,894 $ 1,988 $ 835 $ 683 $ 21,010 Six Months Ended Balance January 1, 2017 $ 5,059 $ — $ 8,950 $ 1,217 $ 1,876 $ 748 $ 61 $ 17,911 Provision for loan losses 2,498 — 378 667 102 87 618 4,350 Charge-offs (1,735 ) — — — — — — (1,735 ) Recoveries 460 — — 10 10 — 4 484 Net charge-offs (1,275 ) — — 10 10 — 4 (1,251 ) Balance June 30, 2017 $ 6,282 $ — $ 9,328 $ 1,894 $ 1,988 $ 835 $ 683 $ 21,010 Allowance for loan losses: Three Months Ended Balance March 31, 2016 $ 4,057 $ — $ 5,905 $ 1,352 $ 1,484 $ 889 $ 70 $ 13,757 Provision for loan losses 480 — 984 16 158 (2 ) 9 1,645 Charge-offs (442 ) — (43 ) — — — (12 ) (497 ) Recoveries 10 — — — — — 2 12 Net charge-offs (432 ) — (43 ) — — — (10 ) (485 ) Balance June 30, 2016 $ 4,105 $ — $ 6,846 $ 1,368 $ 1,642 $ 887 $ 69 $ 14,917 Six Months Ended Balance January 1, 2016 $ 3,644 $ — $ 5,914 $ 1,221 $ 1,432 $ 820 $ 67 $ 13,098 Provision for loan losses 859 — 1,061 147 200 67 21 2,355 Charge-offs (443 ) — (129 ) — — — (22 ) (594 ) Recoveries 45 — — — 10 — 3 58 Net charge-offs (398 ) — (129 ) — 10 — (19 ) (536 ) Balance June 30, 2016 $ 4,105 $ — $ 6,846 $ 1,368 $ 1,642 $ 887 $ 69 $ 14,917 The following table presents the balance of the allowance for loan losses by portfolio type based on the impairment method as of June 30, 2017 and December 31, 2016 : Commercial and industrial Mortgage warehouse Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Allowance for loan losses related to: June 30, 2017 Individually evaluated for impairment $ 2,657 $ — $ 580 $ — $ — $ — $ 150 $ 3,387 Collectively evaluated for impairment 3,625 — 8,748 1,894 1,988 835 533 17,623 Total allowance for loan losses $ 6,282 $ — $ 9,328 $ 1,894 $ 1,988 $ 835 $ 683 $ 21,010 December 31, 2016 Individually evaluated for impairment $ 1,543 $ — $ 105 $ — $ — $ — $ 6 $ 1,654 Collectively evaluated for impairment 3,516 — 8,845 1,217 1,876 748 55 16,257 Total allowance for loan losses $ 5,059 $ — $ 8,950 $ 1,217 $ 1,876 $ 748 $ 61 $ 17,911 The following table presents the recorded investment in loans held for investment by portfolio type based on the impairment method as of June 30, 2017 and December 31, 2016 : Commercial and industrial Mortgage warehouse Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Recorded investment in loans: June 30, 2017 Individually evaluated for impairment $ 15,856 $ — $ 16,176 $ 210 $ 568 $ — $ 155 $ 32,965 Collectively evaluated for impairment 428,845 73,499 991,851 205,814 267,371 102,832 11,475 2,081,687 Total loans evaluated for impairment $ 444,701 $ 73,499 $ 1,008,027 $ 206,024 $ 267,939 $ 102,832 $ 11,630 $ 2,114,652 December 31, 2016 Individually evaluated for impairment $ 8,408 $ — $ 12,321 $ — $ 217 $ — $ 11 $ 20,957 Collectively evaluated for impairment 408,344 67,038 879,668 159,247 246,770 98,657 10,954 1,870,678 Total loans evaluated for impairment $ 416,752 $ 67,038 $ 891,989 $ 159,247 $ 246,987 $ 98,657 $ 10,965 $ 1,891,635 Troubled Debt Restructurings As of June 30, 2017 and December 31, 2016 , the Company had a recorded investment in troubled debt restructurings of $22.7 million and $12.6 million , respectively. The Company allocated $2.0 million and $879 thousand of specific reserves for troubled debt restructurings at June 30, 2017 and December 31, 2016 , respectively, and did not commit to lend additional amounts on these loans. The following tables present information regarding loans modified in a troubled debt restructuring during the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, 2017 2016 Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment (Dollars in thousands) Troubled Debt Restructurings Commercial and industrial 2 $ 1,604 $ 1,604 8 $ 2,058 $ 2,058 Mortgage warehouse — — — — — — Real estate: Commercial real estate (including multi-family residential) 1 6,953 6,953 2 996 996 Commercial real estate construction and land development 1 210 210 — — — 1-4 family residential (including home equity) — — — — — — Residential construction — — — — — — Consumer and other — — — — — — Total 4 $ 8,767 $ 8,767 10 $ 3,054 $ 3,054 Six Months Ended June 30, 2017 2016 Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment (Dollars in thousands) Troubled Debt Restructurings Commercial and industrial 3 $ 1,920 $ 1,920 12 $ 2,931 $ 2,931 Mortgage warehouse — — — — — — Real estate: Commercial real estate (including multi-family residential) 2 8,281 8,281 6 6,250 6,250 Commercial real estate construction and land development 1 210 210 — — — 1-4 family residential (including home equity) 1 86 86 — — — Residential construction — — — — — — Consumer and other — — — 1 7 7 Total 7 $ 10,497 $ 10,497 19 $ 9,188 $ 9,188 Troubled debt restructurings resulted in charge-offs of $12 thousand and $ 407 thousand during the three and six months ended June 30, 2017, respectively. There were $442 thousand in charge-offs resulting from troubled debt restructurings during the three and six months ended June 30, 2016. As of June 30, 2017 , a $12 thousand loan was modified under a troubled debt restructuring during the previous twelve month period that subsequently defaulted and was charged off during the six months ended June 30, 2017 . As of June 30, 2016 , there were no loans modified under troubled debt restructurings during the previous twelve month period that subsequently defaulted during the six months ended June 30, 2016 . The modifications primarily related to extending the amortization periods of the loans. Default is determined at 90 or more days past due. The Company did not grant principal reductions on any restructured loans.

FAIR VALUE

FAIR VALUE	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
FAIR VALUE	FAIR VALUE The Company uses fair value measurements to record fair value adjustments to certain assets and to determine fair value disclosures. Fair value represents the exchange price that would be received from selling an asset or paid to transfer a liability, otherwise known as an “exit price,” in the principal or most advantageous market available to the entity in an orderly transaction between market participants on the measurement date. Fair Value Hierarchy The Company groups financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: • Level 1—Quoted prices for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2—Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3—Significant unobservable inputs that reflect management’s judgment and assumptions that market participants would use in pricing an asset or liability that are supported by little or no market activity. The carrying amounts and estimated fair values of financial instruments that are reported on the balance sheet are as follows: As of June 30, 2017 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 187,491 $ 187,491 $ — $ — $ 187,491 Available for sale securities 321,268 — 321,268 — 321,268 Loans held for investment, net of allowance 2,093,642 — — 2,091,832 2,091,832 FHLB stock 16,675 N/A N/A N/A N/A Accrued interest receivable 9,284 2 3,707 5,575 9,284 Financial liabilities Deposits $ 2,099,242 $ — $ 2,097,821 — $ 2,097,821 Accrued interest payable 466 — 466 — 466 Borrowed funds 310,569 — 310,349 — 310,349 Subordinated debentures 9,249 — 9,249 — 9,249 As of December 31, 2016 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 142,098 $ 142,098 $ — $ — $ 142,098 Available for sale securities 316,455 — 316,455 — 316,455 Loans held for investment, net of allowance 1,873,724 — — 1,872,056 1,872,056 FHLB stock 13,175 N/A N/A N/A N/A Accrued interest receivable 9,007 3 3,616 5,388 9,007 Financial liabilities Deposits $ 1,870,183 $ — $ 1,868,429 $ — $ 1,868,429 Accrued interest payable 285 — 285 — 285 Borrowed funds 285,569 — 284,989 — 284,989 Subordinated debentures 9,196 — 9,196 — 9,196 The fair value estimates presented above are based on pertinent information available to management as of the dates indicated. The methods used to determine fair value are described in the Company's audited financial statements which are presented in the Company’s Annual Report on Form 10-K for the year ended December 31, 2016 . The following tables present fair values for assets measured at fair value on a recurring basis: As of June 30, 2017 Level 1 Level 2 Level 3 Total (Dollars in thousands) Available for sale securities: U.S. Government and agency securities $ — $ 9,005 $ — $ 9,005 Municipal securities — 239,617 — 239,617 Agency mortgage-backed pass-through securities — 27,907 — 27,907 Corporate bonds and other — 44,739 — 44,739 Total $ — $ 321,268 $ — $ 321,268 As of December 31, 2016 Level 1 Level 2 Level 3 Total (Dollars in thousands) Available for sale securities: U.S. Government and agency securities $ — $ 6,149 $ — $ 6,149 Municipal securities — 237,802 — 237,802 Agency mortgage-backed pass-through securities — 27,324 — 27,324 Corporate bonds and other — 45,180 — 45,180 Total $ — $ 316,455 $ — $ 316,455 There were no liabilities measured at fair value on a recurring basis as of June 30, 2017 or December 31, 2016 . There were no transfers between levels during the three and six months ended June 30, 2017 or 2016 . Certain assets and liabilities are measured at fair value on a nonrecurring 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 such as evidence of impairment. As of June 30, 2017 Level 1 Level 2 Level 3 (Dollars in thousands) Impaired loans: Commercial and industrial $ — $ — $ 9,006 Commercial real estate (including multi-family residential) — — 6,982 Other real estate owned — — 365 $ — $ — $ 16,353 As of December 31, 2016 Level 1 Level 2 Level 3 (Dollars in thousands) Impaired loans: Commercial and industrial $ — $ — $ 1,785 Commercial real estate (including multi-family residential) — — 468 Other real estate owned — — 1,503 $ — $ — $ 3,756 Impaired Loans with Specific Allocation of Allowance During the six months ended June 30, 2017 and the year ended December 31, 2016, certain impaired loans were reevaluated and reported at fair value through a specific allocation of the allowance for loan losses. At June 30, 2017 , the total reported fair value of impaired loans of $16.0 million based on collateral valuations utilizing Level 3 valuation inputs had a carrying value of $19.4 million that was reduced by specific allowance allocations totaling $3.4 million . At December 31, 2016, the total reported fair value of impaired loans of $2.3 million based on collateral valuations utilizing Level 3 valuation inputs had a carrying value of $3.9 million that was reduced by specific allowance allocations totaling $1.7 million . Other Real Estate Owned At June 30, 2017 , the balance of other real estate owned included $365 thousand of foreclosed commercial real estate properties recorded as a result of obtaining physical possession of the property. At June 30, 2017 , the recorded investment of commercial real estate land loans secured by non-residential real estate properties for which formal foreclosure proceeds are in process is $71 thousand . The Company had $1.5 million of other real estate owned at December 31, 2016 .

DEPOSITS

DEPOSITS	6 Months Ended
	Jun. 30, 2017
Deposit Liabilities [Abstract]
DEPOSITS	DEPOSITS Time deposits that meet or exceed the Federal Deposit Insurance Corporation Insurance limit of $250 thousand at June 30, 2017 and December 31, 2016 were $213.3 million and $196.5 million , respectively. Scheduled maturities of time deposits for the next five years are as follows (dollars in thousands): Within one year $ 489,200 After one but within two years 173,741 After two but within three years 48,524 After three but within four years 20,049 After four but within five years 32,225 Total $ 763,739 The Company has $141.1 million and $65.9 million of brokered deposits as of June 30, 2017 and December 31, 2016, respectively; and there are no major concentrations of deposits with any one depositor at June 30, 2017 and December 31, 2016. Included in these amounts are reciprocal deposits $67.9 million and $64.8 million , at June 30, 2017 and December 31, 2016, respectively.

BORROWINGS AND BORROWING CAPACI

BORROWINGS AND BORROWING CAPACITY	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
BORROWINGS AND BORROWING CAPACITY	BORROWINGS AND BORROWING CAPACITY The Company has an available line of credit with the Federal Home Loan Bank (“FHLB”) of Dallas, which allows the Company to borrow on a collateralized basis. FHLB advances are used to manage liquidity as needed. The advances are secured by a blanket lien on certain loans. Maturing advances are replaced by drawing on available cash, making additional borrowings or through increased customer deposits. At June 30, 2017 , the Company had a total borrowing capacity of $840.4 million , of which $495.0 million was available and $345.4 million was outstanding. FHLB advances of $310.0 million were outstanding at June 30, 2017 , at a weighted average interest rate of 1.27% . Letters of credit were $35.4 million at June 30, 2017 , of which $7.3 million will expire in August 2017, $25.0 million will expire in October 2017 and $3.1 million will expire in February 2018. In 2015, the Company borrowed an additional $ 18.0 million under its credit agreement with another financial institution, which was in addition to the $10.1 million of indebtedness incurred under the same credit agreement in 2014. The credit agreement matures in December 2021. The Company used the funds borrowed in 2015 to repay debt that F&M Bancshares owed and used the funds borrowed in 2014 to pay off a previous borrowing with another financial institution that had been entered into during 2013 in conjunction with the acquisition of Independence Bank. In October 2015, the Company paid down $ 27.5 million of the credit agreement with a portion of the proceeds from the initial public offering of Allegiance common stock. The credit agreement includes certain restrictive covenants. At June 30, 2017 , the Company believes it is in compliance with its debt covenants and had not been made aware of any noncompliance by the lender. The interest rate on the outstanding debt under the revolving credit agreement is the Prime rate minus 25 basis points, or 4.00% , at June 30, 2017 , and is paid quarterly. Scheduled principal maturities are as follows (dollars in thousands): Remaining 2017 $ — 2018 — 2019 — 2020 — 2021 and thereafter 569 Total $ 569

SUBORDINATED DEBENTURES

SUBORDINATED DEBENTURES	6 Months Ended
	Jun. 30, 2017
Subordinated Borrowings [Abstract]
SUBORDINATED DEBENTURES	SUBORDINATED DEBENTURES On January 1, 2015, the Company acquired F&M Bancshares and assumed Farmers & Merchants Capital Trust II and Farmers & Merchants Capital Trust III. Each of these trusts is a capital or statutory business trust organized for the sole purpose of issuing trust securities and investing the proceeds in the Company’s junior subordinated debentures. The preferred trust securities of each trust represent preferred beneficial interests in the assets of the respective trusts and are subject to mandatory redemption upon payment of the junior subordinated debentures held by the trust. The common securities of each trust are wholly owned by the Company. Each trust’s ability to pay amounts due on the trust preferred securities is solely dependent upon the Company making payment on the related junior subordinated debentures. The debentures, which are the only assets of each trust, are subordinate and junior in right of payment to all of the Company’s present and future senior indebtedness. The Company has fully and unconditionally guaranteed each trust’s obligations under the trust securities issued by such trust to the extent not paid or made by such trust, provided such trust has funds available for such obligations. Under the provisions of each issue of the debentures, the Company has the right to defer payment of interest on the debentures at any time, or from time to time, for periods not exceeding five years. If interest payments on either issue of the debentures are deferred, the distributions on the applicable trust preferred securities and common securities will also be deferred. The Company assumed the junior subordinated debentures with an aggregate original principal amount of $11.3 million and a current fair value at June 30, 2017 of $9.2 million . At acquisition, the Company recorded a discount of $2.5 million on the debentures. The difference between the carrying value and contractual balance will be recognized as a yield adjustment over the remaining term for the debentures. At June 30, 2017 , the Company had $11.3 million outstanding in junior subordinated debentures issued to the Company’s unconsolidated subsidiary trusts. The junior subordinated debentures are included in Tier 1 capital under current regulatory guidelines and interpretations. A summary of pertinent information related to the Company’s issues of junior subordinated debentures outstanding at June 30, 2017 is set forth in the table below: Description Issuance Date Trust Preferred Securities Outstanding Interest Rate (1) Junior Subordinated Debt Owed to Trusts Maturity Date (2) (Dollars in thousands) Farmers & Merchants Capital Trust II November 13, 2003 $ 7,500 3 month LIBOR + 3.00% $ 7,732 November 8, 2033 Farmers & Merchants Capital Trust III June 30, 2005 3,500 3 month LIBOR + 1.80% 3,609 July 7, 2035 $ 11,341 (1) The 3-month LIBOR in effect as of June 30, 2017 was 1.2624% . (2) All debentures are currently callable.

INCOME TAXES

INCOME TAXES	6 Months Ended
	Jun. 30, 2017
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The amount of the Company’s federal and state income tax expense is influenced by the amount of pre-tax income, the amount of tax-exempt income and the amount of other nondeductible items. For the three and six months ended June 30, 2017 , income tax expense was $1.7 million and $3.3 million , respectively, compared with $2.3 million and $5.4 million , respectively, for the three and six months ended June 30, 2016 . The effective income tax rate for the three and six months ended June 30, 2017 was 24.2% and 22.1% , respectively, compared to 30.8% and 31.8% , respectively, for the three and six months ended June 30, 2016 . The decrease in income tax expense and the effective tax rate year over year was primarily attributable to the excess tax benefit from the exercise of stock options by employees, which was recognized in income tax expense as a result of the adoption of ASU 2016-09. Additionally, the decrease in income tax expense and the effective tax rate was due to the increase in tax free income from the purchase of additional municipal securities from the prior year. During the six months ended June 30, 2017, the impact on the tax rate due to the excess tax benefit on stock options exercised and the increased tax free income from the purchase of municipal securities was 6.5% and 7.7% , respectively. Interest and penalties related to tax positions are recognized in the period in which they begin accruing or when the entity claims the position that does not meet the minimum statutory thresholds. The Company does not have any uncertain tax positions and does not have any interest and penalties recorded in the income statement for the three and six months ended June 30, 2017 and 2016. The Company is no longer subject to examination by the U.S. Federal Tax Jurisdiction for the years prior to 2013.

STOCK BASED COMPENSATION

STOCK BASED COMPENSATION	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK BASED COMPENSATION	STOCK BASED COMPENSATION During 2015, the Company’s Board of Directors and shareholders approved the 2015 Amended and Restated Stock Awards and Incentive Plan (the “Plan”) covering certain awards of stock-based compensation to key employees and directors of the Company. The Plan was amended in 2017 as the shareholders authorized a maximum aggregate number of shares of stock to be issued of 1,900,000 , any or all of which may be issued through incentive stock options. The Company accounts for stock based employee compensation plans using the fair value-based method of accounting. The Company recognized total stock based compensation expense of $456 thousand and $797 thousand for the three and six months ended June 30, 2017 , respectively, and $354 thousand and $707 thousand for the three and six months ended June 30, 2016 , respectively. Stock Options Options to purchase a total of 1,271,931 shares of Company stock have been granted as of June 30, 2017 . Under the Plan, options are exercisable up to 10 years from the date of the grant and are fully vested 4 years after the date of grant.The fair value of stock options granted is estimated at the date of grant using the Black-Scholes option-pricing model. A summary of the activity in the stock option plan during the six months ended June 30, 2017 is set forth below: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In years) (In thousands) Options outstanding, January 1, 2017 935 $ 18.21 6.23 $ 16,773 Options granted 31 35.45 Options exercised (166 ) 17.39 Options forfeited — — Options outstanding, June 30, 2017 800 $ 19.11 6.02 $ 15,356 Options vested and exercisable, June 30, 2017 495 $ 16.56 4.76 $ 10,767 Restricted Stock Awards During 2017 , the Company issued 27,373 shares of restricted stock. The forfeiture restrictions on restricted stock shares will lapse over a period of 4 years, and the shares are considered outstanding at the date of issuance. The Company accounts for restricted stock grants by recording the fair value of the grant on the award date as compensation expense over the vesting period. A summary of the activity of the nonvested shares of restricted stock during the six months ended June 30, 2017 is as follows: Number of Shares Weighted Average Grant Date Fair Value (Shares in thousands) Nonvested share awards outstanding, January 1, 2017 24 $ 18.31 Share awards granted 27 36.14 Share awards vested (10 ) 18.64 Unvested share awards forfeited — — Nonvested share awards outstanding, June 30, 2017 41 $ 30.12

OFF-BALANCE SHEET ARRANGEMENTS,

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES	OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES In the normal course of business, the Company enters into various transactions, which, in accordance with accounting principles generally accepted in the United States, are not included in the Company’s consolidated balance sheets. The Company enters into these transactions to meet the financing needs of its customers. These transactions include commitments to extend credit and standby letters of credit, which involve to varying degrees elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company uses the same credit policies in making commitments and conditional obligations as it does for on balance sheet instruments. The contractual amounts of financial instruments with off-balance sheet risk are as follows: June 30, 2017 December 31, 2016 Fixed Rate Variable Rate Fixed Rate Variable Rate (Dollars in thousands) Commitments to extend credit $ 336,397 $ 251,239 $ 353,822 $ 232,551 Standby letters of credit 10,911 1,675 9,423 124 Total $ 347,308 $ 252,914 $ 363,245 $ 232,675 Commitments to make loans are generally made for an approval period of 120 days or fewer. As of June 30, 2017 , the funded fixed rate loan commitments had interest rates ranging from 1.60% to 7.50% with a weighted average maturity and rate of 2.64 years and 5.05% , respectively. Litigation From time to time, the Company is subject to claims and litigation arising in the ordinary course of business. In the opinion of management, the Company is not party to any legal proceedings the resolution of which it believes would have a material adverse effect on the Company’s business, prospects, financial condition, liquidity, results of operation, cash flows or capital levels. However, one or more unfavorable outcomes in any claim or litigation against the Company could have a material adverse effect for the period in which such claim or litigation is resolved. In addition, regardless of their merits or their ultimate outcomes, such matters are costly, divert management’s attention and may materially adversely affect the Company’s reputation, even if resolved in its favor. The Company intends to defend itself vigorously against any future claims or litigation.

REGULATORY CAPITAL MATTERS

REGULATORY CAPITAL MATTERS	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
REGULATORY CAPITAL MATTERS	REGULATORY CAPITAL MATTERS The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Capital adequacy guidelines, and for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities and certain off balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weightings and other factors. Failure to meet minimum capital requirements can cause regulators to initiate actions that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. The final rules implementing Basel Committee on Banking Supervision's capital guideline for U.S. Banks (Basel III Rules) became effective for the Company on January 1, 2015 with full compliance with all of the requirements being phased in over a multi-year schedule, and fully phased in by January 1, 2019. Starting in January 2016, the implementation of the capital conservation buffer was effective for the Company starting at the 0.625% level and increasing 0.625% each year thereafter, until it reaches 2.5% on January 1, 2019. Management believes as of June 30, 2017 and December 31, 2016 the Company and the Bank met all capital adequacy requirements to which they were then subject. Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. The following is a summary of the Company’s and the Bank’s actual and required capital ratios at June 30, 2017 and December 31, 2016 : Actual Minimum Required For Capital Adequacy Purposes Minimum Required Plus Capital To Be Categorized As Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) ALLEGIANCE BANCSHARES, INC. (Consolidated) As of June 30, 2017 Total Capital (to risk weighted assets) $ 285,954 12.13 % $ 188,607 8.00 % $ 218,076 9.250 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 255,694 10.85 % 106,091 4.50 % 135,561 5.750 % N/A N/A Tier I Capital (to risk weighted assets) 264,943 11.24 % 141,455 6.00 % 170,925 7.250 % N/A N/A Tier I Capital (to average tangible assets) 264,943 10.11 % 104,820 4.00 % 104,820 4.000 % N/A N/A As of December 31, 2016 Total Capital (to risk weighted assets) $ 268,155 12.57 % $ 170,690 8.00 % $ 184,025 8.625 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 241,048 11.30 % 96,013 4.50 % 109,348 5.125 % N/A N/A Tier I Capital (to risk weighted assets) 250,244 11.73 % 128,018 6.00 % 141,353 6.625 % N/A N/A Tier I Capital (to average tangible assets) 250,244 10.35 % 96,708 4.00 % 96,708 4.000 % N/A N/A ALLEGIANCE BANK As of June 30, 2017 Total Capital (to risk weighted assets) $ 262,068 11.12 % $ 188,523 8.00 % $ 217,980 9.250 % $ 235,654 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 241,057 10.23 % 106,044 4.50 % 135,501 5.750 % 153,175 6.50 % Tier I Capital (to risk weighted assets) 241,057 10.23 % 141,392 6.00 % 170,849 7.250 % 188,523 8.00 % Tier I Capital (to average tangible assets) 241,057 9.20 % 104,781 4.00 % 104,781 4.000 % 130,976 5.00 % As of December 31, 2016 Total Capital (to risk weighted assets) $ 247,606 11.61 % $ 170,630 8.00 % $ 183,960 8.625 % $ 213,288 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 229,694 10.77 % 95,979 4.50 % 109,310 5.125 % 138,637 6.50 % Tier I Capital (to risk weighted assets) 229,694 10.77 % 127,973 6.00 % 141,303 6.625 % 170,630 8.00 % Tier I Capital (to average tangible assets) 229,694 9.50 % 96,679 4.00 % 96,679 4.000 % 120,849 5.00 %

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
EARNINGS PER COMMON SHARE	EARNINGS PER COMMON SHARE Diluted earnings per common share is computed using the weighted-average number of common shares determined for the basic earnings per common share computation plus the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock using the treasury stock method. Outstanding stock options issued by the Company represent the only dilutive effect reflected in diluted weighted average shares. Restricted shares are considered outstanding at the date of grant, accounted for as participating securities and are included in basic and diluted weighted average common shares outstanding. Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Amount Per Share Amount Amount Per Share Amount Amount Per Share Amount Per Share (Amounts in thousands, except per share data) Net income attributable to common shareholders $ 5,395 $ 5,254 $ 11,442 $ 11,609 Basic: Weighted average common shares outstanding 13,125 $ 0.41 12,857 $ 0.41 13,073 $ 0.88 12,849 $ 0.90 Diluted: Add incremental shares for: Dilutive effect of stock option exercises 346 182 352 154 Total 13,471 $ 0.40 13,039 $ 0.40 13,425 $ 0.85 13,003 $ 0.89 Stock options for 14 thousand shares were not considered in computing diluted earnings per common share as of June 30, 2017 because they were antidilutive. There were no antidilutive shares as of June 30, 2016.

NATURE OF OPERATIONS AND SUMM22

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Policies)	6 Months Ended
	Jun. 30, 2017
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation -The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and in accordance with guidance provided by the Securities and Exchange Commission. Accordingly, the condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows of the Company on a consolidated basis, and all such adjustments are of a normal recurring nature. Transactions with Allegiance have been eliminated. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 . Operating results for the three and six months ended June 30, 2017 are not necessarily indicative of the results that may be expected for the year ending December 31, 2017 .
Significant Accounting and Reporting Policies	Significant Accounting and Reporting Policies The Company’s significant accounting and reporting policies can be found in Note 1 of the Company’s annual financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2016 . New Accounting Standards Newly Issued But Not Yet Effective Accounting Standards ASU 2014-09 “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and most industry-specific guidance throughout the Industry Topics of the Codification. 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 is effective for the Company beginning on January 1, 2018, with retrospective application to each prior reporting period presented. The Company expects to adopt ASU 2014-09 in the first quarter 2018 using the modified retrospective approach, which includes presenting the cumulative effect of initial application along with supplementary disclosures. The Company is evaluating the full effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures; however, adoption of the ASU is not expected to have a significant impact. The Company’s primary sources of revenues are derived from interest and dividends earned on loans, investment securities and other financial instruments that are not within the scope of ASU 2014-09. ASU 2016-02 “Leases (Topic 842)." ASU 2016-02 will, among other things, require lessees to recognize a lease liability, which is a lessee’s obligation to make lease payments arising from a lease, measured on a discounted basis; and a right-of-use asset, which is an asset that represents the lessee’s right to use, or control the use of, a specified asset for the lease term. ASU 2016-02 does not significantly change lease accounting requirements applicable to lessors; however, certain changes were made to align, where necessary, lessor accounting with the lessee accounting model and ASC Topic 606, “Revenue from Contracts with Customers.” ASU 2016-02 will be effective for the Company on January 1, 2019 and will require transition using a modified retrospective approach for leases existing at, or entered into after, the beginning of the earliest comparative period presented in the financial statements. Early application of this ASU is permitted for all entities. Adoption of ASU 2016-02 is not expected to have a material impact on the Company’s financial statements. The Company leases certain properties and equipment under operating leases that will result in the recognition of lease assets and lease liabilities on the Company’s balance sheet under the ASU. ASU 2016-13, “Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” Among other things, ASU 2016-13 requires the measurement of all expected credit losses for financial assets held at the reporting date based on historical experience, current conditions and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to better form their credit loss estimates. Many of the loss estimation techniques applied today will still be permitted, although the inputs to those techniques will change to reflect the full amount of expected credit losses. In addition, ASU 2016-13 amends the accounting for credit losses on available for sale debt securities and purchased financial assets with credit deterioration. ASU 2016-13 is effective for the Company on January 1, 2020 and must be applied using the modified retrospective approach with limited exceptions. Early adoption is permitted for fiscal years, and interim periods within those years, beginning after December 15, 2018. The Company is currently assessing the impact that the adoption of this standard will have on the financial condition and results of operations of the Company. The Company has formed a team that is assessing its data and system needs and is evaluating the impact of adoption. The Company expects to recognize a one-time cumulative effect adjustment to the allowance for loan losses as of the beginning of the first reporting period in which the new standard is effective, but has not yet determined the magnitude of any such one-time adjustment or the overall impact on the Company’s financial statements. ASU No. 2017-04, “Intangibles - Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment,” ASU 2017-04 intends to simplify goodwill impairment testing by eliminating the second step of the analysis under which the implied fair value of goodwill is determined as if the reporting unit were being acquired in a business combination. The update instead requires entities to compare the fair value of a reporting unit with its carrying amount and recognize an impairment charge for any amount by which the carrying amount exceeds the reporting unit’s fair value, to the extent that the loss recognized does not exceed the amount of goodwill allocated to that reporting unit. ASU 2017-04 must be applied prospectively and is effective for the Company on January 1, 2020. Early adoption is permitted. The Company does not expect the new guidance to have a material impact on its financial condition or results of operation. ASU 2017-08 “Receivables - Nonrefundable Fees and Other Costs (Subtopic 310-20) - Premium Amortization on Purchased Callable Debt Securities.” ASU 2017-08 shortens the amortization period for certain callable debt securities held at a premium to require such premiums to be amortized to the earliest call date unless applicable guidance related to certain pools of securities is applied to consider estimated prepayments. Under prior guidance, entities were generally required to amortize premiums on individual, non-pooled callable debt securities as a yield adjustment over the contractual life of the security. ASU 2017-08 does not change the accounting for callable debt securities held at a discount. ASU 2017-08 will be effective for the Company on January 1, 2019, with early adoption permitted. The Company is currently evaluating the potential impact of ASU 2017-08 on its financial statements.

GOODWILL AND CORE DEPOSIT INT23

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS (Tables)	6 Months Ended
	Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	Changes in the carrying amount of the Company’s goodwill and core deposit intangible assets were as follows: Goodwill Core Deposit Intangibles (Dollars in thousands) Balance as of January 1, 2016 $ 39,389 $ 5,230 Sale of branch assets — (390 ) Amortization — (785 ) Balance as of December 31, 2016 39,389 4,055 Amortization — (391 ) Balance as of June 30, 2017 $ 39,389 $ 3,664
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated aggregate future amortization expense for core deposit intangible assets remaining as of June 30, 2017 is as follows (dollars in thousands): Remaining 2017 $ 391 2018 781 2019 781 2020 744 2021 484 Thereafter 483 Total $ 3,664

SECURITIES (Tables)

SECURITIES (Tables)	6 Months Ended
	Jun. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	The amortized cost and fair value of investment securities were as follows: June 30, 2017 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) Available for Sale U.S. Government and agency securities $ 8,722 $ 307 $ (24 ) $ 9,005 Municipal securities 239,282 2,694 (2,359 ) 239,617 Agency mortgage-backed pass-through securities 27,991 218 (302 ) 27,907 Corporate bonds and other 44,589 184 (34 ) 44,739 Total $ 320,584 $ 3,403 $ (2,719 ) $ 321,268 December 31, 2016 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value (Dollars in thousands) Available for Sale U.S. Government and agency securities $ 5,883 $ 266 $ — $ 6,149 Municipal securities 242,501 956 (5,655 ) 237,802 Agency mortgage-backed pass-through securities 27,496 265 (437 ) 27,324 Corporate bonds and other 45,271 77 (168 ) 45,180 Total $ 321,151 $ 1,564 $ (6,260 ) $ 316,455
Investments Classified by Contractual Maturity Date	The amortized cost and fair value of investment securities at June 30, 2017 , by contractual maturity, are shown below. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations at any time with or without call or prepayment penalties. Amortized Cost Fair Value (Dollars in thousands) Due in one year or less $ 11,110 $ 11,136 Due after one year through five years 62,750 63,060 Due after five years through ten years 96,802 97,349 Due after ten years 121,931 121,816 Subtotal 292,593 293,361 Agency mortgage-backed pass through securities 27,991 27,907 Total $ 320,584 $ 321,268
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	Securities with unrealized losses segregated by length of time such securities have been in a continuous loss position are as follows: June 30, 2017 Less than 12 Months More than 12 Months Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (Dollars in thousands) Available for Sale U.S. Government and agency securities $ 1,271 $ (24 ) $ — $ — $ 1,271 $ (24 ) Municipal securities 119,872 (2,359 ) — — 119,872 (2,359 ) Agency mortgage-backed pass-through securities 12,779 (228 ) 2,613 (74 ) 15,392 (302 ) Corporate bonds and other 12,093 (34 ) — — 12,093 (34 ) Total $ 146,015 $ (2,645 ) $ 2,613 $ (74 ) $ 148,628 $ (2,719 ) December 31, 2016 Less than 12 Months More than 12 Months Total Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses Estimated Fair Value Unrealized Losses (Dollars in thousands) Available for Sale U.S. Government and agency securities $ — $ — $ — $ — $ — $ — Municipal securities 178,876 (5,655 ) — — 178,876 (5,655 ) Agency mortgage-backed pass-through securities 12,520 (347 ) 2,803 (90 ) 15,323 (437 ) Corporate bonds and other 24,629 (168 ) — — 24,629 (168 ) Total $ 216,025 $ (6,170 ) $ 2,803 $ (90 ) $ 218,828 $ (6,260 )

LOANS AND ALLOWANCE FOR LOAN 25

LOANS AND ALLOWANCE FOR LOAN LOSSES (Tables)	6 Months Ended
	Jun. 30, 2017
Loans and Allowance for Loan Losses [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The loan portfolio balances, net of unearned income and fees, consist of various types of loans primarily made to borrowers located within Texas and are classified by major type as follows: June 30, December 31, (Dollars in thousands) Commercial and industrial $ 444,701 $ 416,752 Mortgage warehouse 73,499 67,038 Real estate: Commercial real estate (including multi-family residential) 1,008,027 891,989 Commercial real estate construction and land development 206,024 159,247 1-4 family residential (including home equity) 267,939 246,987 Residential construction 102,832 98,657 Consumer and other 11,630 10,965 Total loans 2,114,652 1,891,635 Allowance for loan losses (21,010 ) (17,911 ) Loans, net $ 2,093,642 $ 1,873,724
Past Due Financing Receivables	An aging analysis of the recorded investment in past due loans, segregated by class of loans, is as follows: June 30, 2017 Loans Past Due and Still Accruing 30-89 Days 90 or More Days Total Past Due Loans Nonaccrual Loans Current Loans Total Loans (Dollars in thousands) Commercial and industrial $ 1,720 $ — $ 1,720 $ 9,051 $ 433,930 $ 444,701 Mortgage warehouse — — — — 73,499 73,499 Real estate: Commercial real estate (including multi-family residential) 3,563 — 3,563 9,556 994,908 1,008,027 Commercial real estate construction and land development 275 — 275 — 205,749 206,024 1-4 family residential (including home equity) 1,403 — 1,403 568 265,968 267,939 Residential construction 1,401 — 1,401 — 101,431 102,832 Consumer and other 12 — 12 155 11,463 11,630 Total loans $ 8,374 $ — $ 8,374 $ 19,330 $ 2,086,948 $ 2,114,652 December 31, 2016 Loans Past Due and Still Accruing 30-89 Days 90 or More Days Total Past Due Loans Nonaccrual Loans Current Loans Total Loans (Dollars in thousands) Commercial and industrial $ 1,028 $ 911 $ 1,939 $ 3,896 $ 410,917 $ 416,752 Mortgage warehouse — — — — 67,038 67,038 Real estate: Commercial real estate (including multi-family residential) 1,661 — 1,661 11,663 878,665 891,989 Commercial real estate construction and land development 263 — 263 — 158,984 159,247 1-4 family residential (including home equity) 280 — 280 217 246,490 246,987 Residential construction — — — — 98,657 98,657 Consumer and other 125 — 125 12 10,828 10,965 Total loans $ 3,357 $ 911 $ 4,268 $ 15,788 $ 1,871,579 $ 1,891,635
Impaired Financing Receivables	Impaired loans by class of loans are set forth in the following tables. June 30, 2017 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 5,268 $ 6,194 $ — Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 8,835 8,835 — Commercial real estate construction and land development 210 210 — 1-4 family residential (including home equity) 568 568 — Residential construction — — — Consumer and other 5 5 — Total 14,886 15,812 — With an allowance recorded: Commercial and industrial 10,588 11,663 2,657 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 7,341 7,562 580 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) — — — Residential construction — — — Consumer and other 150 150 150 Total 18,079 19,375 3,387 Total: Commercial and industrial 15,856 17,857 2,657 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 16,176 16,397 580 Commercial real estate construction and land development 210 210 — 1-4 family residential (including home equity) 568 568 — Residential construction — — — Consumer and other 155 155 150 $ 32,965 $ 35,187 $ 3,387 December 31, 2016 Recorded Investment Unpaid Principal Balance Related Allowance (Dollars in thousands) With no related allowance recorded: Commercial and industrial $ 5,300 $ 5,414 $ — Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 11,748 11,833 — Commercial real estate construction and land development — — — 1-4 family residential (including home equity) 217 217 — Residential construction — — — Consumer and other 5 5 — Total 17,270 17,469 — With an allowance recorded: Commercial and industrial 3,108 3,328 1,543 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 573 573 105 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) — — — Residential construction — — — Consumer and other 6 6 6 Total 3,687 3,907 1,654 Total: Commercial and industrial 8,408 8,742 1,543 Mortgage warehouse — — — Real estate: Commercial real estate (including multi-family residential) 12,321 12,406 105 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) 217 217 — Residential construction — — — Consumer and other 11 11 6 $ 20,957 $ 21,376 $ 1,654 The following table presents average impaired loans and interest recognized on impaired loans for the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, 2017 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income (Dollars in thousands) Commercial and industrial $ 16,758 $ 95 $ 5,748 $ 109 Mortgage warehouse — — — — Real estate: Commercial real estate (including multi-family residential) 16,239 103 11,221 164 Commercial real estate construction and land development 210 4 — — 1-4 family residential (including home equity) 571 — 229 (2 ) Residential construction — — — — Consumer and other 159 1 35 (1 ) Total $ 33,937 $ 203 $ 17,233 $ 270 Six Months Ended June 30, 2017 2016 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income (Dollars in thousands) Commercial and industrial $ 17,004 $ 234 $ 5,959 $ 164 Mortgage warehouse — — — — Real estate: Commercial real estate (including multi-family residential) 16,338 180 11,599 222 Commercial real estate construction and land development 315 4 — — 1-4 family residential (including home equity) 572 1 233 8 Residential construction — — — — Consumer and other 160 1 38 1 Total $ 34,389 $ 420 $ 17,829 $ 395
Financing Receivable Credit Quality Indicators	Based on the most recent analysis performed, the risk category of loans by class of loan at June 30, 2017 is as follows: Pass Watch Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial and industrial $ 406,655 $ 11,003 $ 6,284 $ 20,759 $ — $ 444,701 Mortgage warehouse 73,499 — — — — 73,499 Real estate: Commercial real estate (including multi-family residential) 943,534 21,716 6,168 36,609 — 1,008,027 Commercial real estate construction and land development 195,180 5,643 144 5,057 — 206,024 1-4 family residential (including home equity) 262,972 848 1,474 2,645 — 267,939 Residential construction 100,756 1,559 517 — — 102,832 Consumer and other 11,256 168 3 203 — 11,630 Total loans $ 1,993,852 $ 40,937 $ 14,590 $ 65,273 $ — $ 2,114,652 The following table presents the risk category of loans by class of loan at December 31, 2016 : Pass Watch Special Mention Substandard Doubtful Total (Dollars in thousands) Commercial and industrial $ 384,979 $ 11,784 $ 3,344 $ 16,645 $ — $ 416,752 Mortgage warehouse 67,038 — — — — 67,038 Real estate: Commercial real estate (including multi-family residential) 834,781 16,009 6,804 34,395 — 891,989 Commercial real estate construction and land development 149,010 8,124 — 2,113 — 159,247 1-4 family residential (including home equity) 242,208 512 2,069 2,198 — 246,987 Residential construction 97,808 — 415 434 — 98,657 Consumer and other 10,520 364 4 77 — 10,965 Total loans $ 1,786,344 $ 36,793 $ 12,636 $ 55,862 $ — $ 1,891,635
Allowance for Credit Losses on Financing Receivables	The following table presents the activity in the allowance for loan losses by portfolio type for the three and six months ended June 30, 2017 and 2016 : Commercial and industrial Mortgage warehouse Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Allowance for loan losses: Three Months Ended Balance March 31, 2017 $ 5,284 $ — $ 9,158 $ 1,608 $ 1,846 $ 737 $ 54 $ 18,687 Provision for loan losses 1,692 — 170 276 142 98 629 3,007 Charge-offs (1,108 ) — — — — — — (1,108 ) Recoveries 414 — — 10 — — — 424 Net charge-offs (694 ) — — 10 — — — (684 ) Balance June 30, 2017 $ 6,282 $ — $ 9,328 $ 1,894 $ 1,988 $ 835 $ 683 $ 21,010 Six Months Ended Balance January 1, 2017 $ 5,059 $ — $ 8,950 $ 1,217 $ 1,876 $ 748 $ 61 $ 17,911 Provision for loan losses 2,498 — 378 667 102 87 618 4,350 Charge-offs (1,735 ) — — — — — — (1,735 ) Recoveries 460 — — 10 10 — 4 484 Net charge-offs (1,275 ) — — 10 10 — 4 (1,251 ) Balance June 30, 2017 $ 6,282 $ — $ 9,328 $ 1,894 $ 1,988 $ 835 $ 683 $ 21,010 Allowance for loan losses: Three Months Ended Balance March 31, 2016 $ 4,057 $ — $ 5,905 $ 1,352 $ 1,484 $ 889 $ 70 $ 13,757 Provision for loan losses 480 — 984 16 158 (2 ) 9 1,645 Charge-offs (442 ) — (43 ) — — — (12 ) (497 ) Recoveries 10 — — — — — 2 12 Net charge-offs (432 ) — (43 ) — — — (10 ) (485 ) Balance June 30, 2016 $ 4,105 $ — $ 6,846 $ 1,368 $ 1,642 $ 887 $ 69 $ 14,917 Six Months Ended Balance January 1, 2016 $ 3,644 $ — $ 5,914 $ 1,221 $ 1,432 $ 820 $ 67 $ 13,098 Provision for loan losses 859 — 1,061 147 200 67 21 2,355 Charge-offs (443 ) — (129 ) — — — (22 ) (594 ) Recoveries 45 — — — 10 — 3 58 Net charge-offs (398 ) — (129 ) — 10 — (19 ) (536 ) Balance June 30, 2016 $ 4,105 $ — $ 6,846 $ 1,368 $ 1,642 $ 887 $ 69 $ 14,917 The following table presents the balance of the allowance for loan losses by portfolio type based on the impairment method as of June 30, 2017 and December 31, 2016 : Commercial and industrial Mortgage warehouse Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Allowance for loan losses related to: June 30, 2017 Individually evaluated for impairment $ 2,657 $ — $ 580 $ — $ — $ — $ 150 $ 3,387 Collectively evaluated for impairment 3,625 — 8,748 1,894 1,988 835 533 17,623 Total allowance for loan losses $ 6,282 $ — $ 9,328 $ 1,894 $ 1,988 $ 835 $ 683 $ 21,010 December 31, 2016 Individually evaluated for impairment $ 1,543 $ — $ 105 $ — $ — $ — $ 6 $ 1,654 Collectively evaluated for impairment 3,516 — 8,845 1,217 1,876 748 55 16,257 Total allowance for loan losses $ 5,059 $ — $ 8,950 $ 1,217 $ 1,876 $ 748 $ 61 $ 17,911 The following table presents the recorded investment in loans held for investment by portfolio type based on the impairment method as of June 30, 2017 and December 31, 2016 : Commercial and industrial Mortgage warehouse Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Recorded investment in loans: June 30, 2017 Individually evaluated for impairment $ 15,856 $ — $ 16,176 $ 210 $ 568 $ — $ 155 $ 32,965 Collectively evaluated for impairment 428,845 73,499 991,851 205,814 267,371 102,832 11,475 2,081,687 Total loans evaluated for impairment $ 444,701 $ 73,499 $ 1,008,027 $ 206,024 $ 267,939 $ 102,832 $ 11,630 $ 2,114,652 December 31, 2016 Individually evaluated for impairment $ 8,408 $ — $ 12,321 $ — $ 217 $ — $ 11 $ 20,957 Collectively evaluated for impairment 408,344 67,038 879,668 159,247 246,770 98,657 10,954 1,870,678 Total loans evaluated for impairment $ 416,752 $ 67,038 $ 891,989 $ 159,247 $ 246,987 $ 98,657 $ 10,965 $ 1,891,635
Troubled Debt Restructurings on Financing Receivables	The following tables present information regarding loans modified in a troubled debt restructuring during the three and six months ended June 30, 2017 and 2016: Three Months Ended June 30, 2017 2016 Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment (Dollars in thousands) Troubled Debt Restructurings Commercial and industrial 2 $ 1,604 $ 1,604 8 $ 2,058 $ 2,058 Mortgage warehouse — — — — — — Real estate: Commercial real estate (including multi-family residential) 1 6,953 6,953 2 996 996 Commercial real estate construction and land development 1 210 210 — — — 1-4 family residential (including home equity) — — — — — — Residential construction — — — — — — Consumer and other — — — — — — Total 4 $ 8,767 $ 8,767 10 $ 3,054 $ 3,054 Six Months Ended June 30, 2017 2016 Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment Number of Contracts Pre- Modification of Outstanding Recorded Investment Post- Modification of Outstanding Recorded Investment (Dollars in thousands) Troubled Debt Restructurings Commercial and industrial 3 $ 1,920 $ 1,920 12 $ 2,931 $ 2,931 Mortgage warehouse — — — — — — Real estate: Commercial real estate (including multi-family residential) 2 8,281 8,281 6 6,250 6,250 Commercial real estate construction and land development 1 210 210 — — — 1-4 family residential (including home equity) 1 86 86 — — — Residential construction — — — — — — Consumer and other — — — 1 7 7 Total 7 $ 10,497 $ 10,497 19 $ 9,188 $ 9,188

FAIR VALUE (Tables)

FAIR VALUE (Tables)	6 Months Ended
	Jun. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping	The carrying amounts and estimated fair values of financial instruments that are reported on the balance sheet are as follows: As of June 30, 2017 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 187,491 $ 187,491 $ — $ — $ 187,491 Available for sale securities 321,268 — 321,268 — 321,268 Loans held for investment, net of allowance 2,093,642 — — 2,091,832 2,091,832 FHLB stock 16,675 N/A N/A N/A N/A Accrued interest receivable 9,284 2 3,707 5,575 9,284 Financial liabilities Deposits $ 2,099,242 $ — $ 2,097,821 — $ 2,097,821 Accrued interest payable 466 — 466 — 466 Borrowed funds 310,569 — 310,349 — 310,349 Subordinated debentures 9,249 — 9,249 — 9,249 As of December 31, 2016 Carrying Estimated Fair Value Amount Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 142,098 $ 142,098 $ — $ — $ 142,098 Available for sale securities 316,455 — 316,455 — 316,455 Loans held for investment, net of allowance 1,873,724 — — 1,872,056 1,872,056 FHLB stock 13,175 N/A N/A N/A N/A Accrued interest receivable 9,007 3 3,616 5,388 9,007 Financial liabilities Deposits $ 1,870,183 $ — $ 1,868,429 $ — $ 1,868,429 Accrued interest payable 285 — 285 — 285 Borrowed funds 285,569 — 284,989 — 284,989 Subordinated debentures 9,196 — 9,196 — 9,196
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present fair values for assets measured at fair value on a recurring basis: As of June 30, 2017 Level 1 Level 2 Level 3 Total (Dollars in thousands) Available for sale securities: U.S. Government and agency securities $ — $ 9,005 $ — $ 9,005 Municipal securities — 239,617 — 239,617 Agency mortgage-backed pass-through securities — 27,907 — 27,907 Corporate bonds and other — 44,739 — 44,739 Total $ — $ 321,268 $ — $ 321,268 As of December 31, 2016 Level 1 Level 2 Level 3 Total (Dollars in thousands) Available for sale securities: U.S. Government and agency securities $ — $ 6,149 $ — $ 6,149 Municipal securities — 237,802 — 237,802 Agency mortgage-backed pass-through securities — 27,324 — 27,324 Corporate bonds and other — 45,180 — 45,180 Total $ — $ 316,455 $ — $ 316,455
Fair Value Measurements, Nonrecurring	Certain assets and liabilities are measured at fair value on a nonrecurring 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 such as evidence of impairment. As of June 30, 2017 Level 1 Level 2 Level 3 (Dollars in thousands) Impaired loans: Commercial and industrial $ — $ — $ 9,006 Commercial real estate (including multi-family residential) — — 6,982 Other real estate owned — — 365 $ — $ — $ 16,353 As of December 31, 2016 Level 1 Level 2 Level 3 (Dollars in thousands) Impaired loans: Commercial and industrial $ — $ — $ 1,785 Commercial real estate (including multi-family residential) — — 468 Other real estate owned — — 1,503 $ — $ — $ 3,756

DEPOSITS (Tables)

DEPOSITS (Tables)	6 Months Ended
	Jun. 30, 2017
Deposit Liabilities [Abstract]
Schedule of Maturities of Time Deposits	Scheduled maturities of time deposits for the next five years are as follows (dollars in thousands): Within one year $ 489,200 After one but within two years 173,741 After two but within three years 48,524 After three but within four years 20,049 After four but within five years 32,225 Total $ 763,739

BORROWINGS AND BORROWING CAPA28

BORROWINGS AND BORROWING CAPACITY (Tables)	6 Months Ended
	Jun. 30, 2017
Debt Disclosure [Abstract]
Schedule of Maturities of Long-term Debt	Scheduled principal maturities are as follows (dollars in thousands): Remaining 2017 $ — 2018 — 2019 — 2020 — 2021 and thereafter 569 Total $ 569

SUBORDINATED DEBENTURES (Tables

SUBORDINATED DEBENTURES (Tables)	6 Months Ended
	Jun. 30, 2017
Subordinated Borrowings [Abstract]
Schedule of Subordinated Borrowing	A summary of pertinent information related to the Company’s issues of junior subordinated debentures outstanding at June 30, 2017 is set forth in the table below: Description Issuance Date Trust Preferred Securities Outstanding Interest Rate (1) Junior Subordinated Debt Owed to Trusts Maturity Date (2) (Dollars in thousands) Farmers & Merchants Capital Trust II November 13, 2003 $ 7,500 3 month LIBOR + 3.00% $ 7,732 November 8, 2033 Farmers & Merchants Capital Trust III June 30, 2005 3,500 3 month LIBOR + 1.80% 3,609 July 7, 2035 $ 11,341 (1) The 3-month LIBOR in effect as of June 30, 2017 was 1.2624% . (2) All debentures are currently callable.

STOCK BASED COMPENSATION (Table

STOCK BASED COMPENSATION (Tables)	6 Months Ended
	Jun. 30, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A summary of the activity in the stock option plan during the six months ended June 30, 2017 is set forth below: Number of Options Weighted Average Exercise Price Weighted Average Remaining Contractual Term Aggregate Intrinsic Value (In thousands) (In years) (In thousands) Options outstanding, January 1, 2017 935 $ 18.21 6.23 $ 16,773 Options granted 31 35.45 Options exercised (166 ) 17.39 Options forfeited — — Options outstanding, June 30, 2017 800 $ 19.11 6.02 $ 15,356 Options vested and exercisable, June 30, 2017 495 $ 16.56 4.76 $ 10,767
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	A summary of the activity of the nonvested shares of restricted stock during the six months ended June 30, 2017 is as follows: Number of Shares Weighted Average Grant Date Fair Value (Shares in thousands) Nonvested share awards outstanding, January 1, 2017 24 $ 18.31 Share awards granted 27 36.14 Share awards vested (10 ) 18.64 Unvested share awards forfeited — — Nonvested share awards outstanding, June 30, 2017 41 $ 30.12

OFF-BALANCE SHEET ARRANGEMENT31

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES (Tables)	6 Months Ended
	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks	The contractual amounts of financial instruments with off-balance sheet risk are as follows: June 30, 2017 December 31, 2016 Fixed Rate Variable Rate Fixed Rate Variable Rate (Dollars in thousands) Commitments to extend credit $ 336,397 $ 251,239 $ 353,822 $ 232,551 Standby letters of credit 10,911 1,675 9,423 124 Total $ 347,308 $ 252,914 $ 363,245 $ 232,675

REGULATORY CAPITAL MATTERS (Tab

REGULATORY CAPITAL MATTERS (Tables)	6 Months Ended
	Jun. 30, 2017
Banking and Thrift [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following is a summary of the Company’s and the Bank’s actual and required capital ratios at June 30, 2017 and December 31, 2016 : Actual Minimum Required For Capital Adequacy Purposes Minimum Required Plus Capital To Be Categorized As Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) ALLEGIANCE BANCSHARES, INC. (Consolidated) As of June 30, 2017 Total Capital (to risk weighted assets) $ 285,954 12.13 % $ 188,607 8.00 % $ 218,076 9.250 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 255,694 10.85 % 106,091 4.50 % 135,561 5.750 % N/A N/A Tier I Capital (to risk weighted assets) 264,943 11.24 % 141,455 6.00 % 170,925 7.250 % N/A N/A Tier I Capital (to average tangible assets) 264,943 10.11 % 104,820 4.00 % 104,820 4.000 % N/A N/A As of December 31, 2016 Total Capital (to risk weighted assets) $ 268,155 12.57 % $ 170,690 8.00 % $ 184,025 8.625 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 241,048 11.30 % 96,013 4.50 % 109,348 5.125 % N/A N/A Tier I Capital (to risk weighted assets) 250,244 11.73 % 128,018 6.00 % 141,353 6.625 % N/A N/A Tier I Capital (to average tangible assets) 250,244 10.35 % 96,708 4.00 % 96,708 4.000 % N/A N/A ALLEGIANCE BANK As of June 30, 2017 Total Capital (to risk weighted assets) $ 262,068 11.12 % $ 188,523 8.00 % $ 217,980 9.250 % $ 235,654 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 241,057 10.23 % 106,044 4.50 % 135,501 5.750 % 153,175 6.50 % Tier I Capital (to risk weighted assets) 241,057 10.23 % 141,392 6.00 % 170,849 7.250 % 188,523 8.00 % Tier I Capital (to average tangible assets) 241,057 9.20 % 104,781 4.00 % 104,781 4.000 % 130,976 5.00 % As of December 31, 2016 Total Capital (to risk weighted assets) $ 247,606 11.61 % $ 170,630 8.00 % $ 183,960 8.625 % $ 213,288 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 229,694 10.77 % 95,979 4.50 % 109,310 5.125 % 138,637 6.50 % Tier I Capital (to risk weighted assets) 229,694 10.77 % 127,973 6.00 % 141,303 6.625 % 170,630 8.00 % Tier I Capital (to average tangible assets) 229,694 9.50 % 96,679 4.00 % 96,679 4.000 % 120,849 5.00 %

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	6 Months Ended
	Jun. 30, 2017
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Restricted shares are considered outstanding at the date of grant, accounted for as participating securities and are included in basic and diluted weighted average common shares outstanding. Three Months Ended June 30, Six Months Ended June 30, 2017 2016 2017 2016 Amount Per Share Amount Amount Per Share Amount Amount Per Share Amount Per Share (Amounts in thousands, except per share data) Net income attributable to common shareholders $ 5,395 $ 5,254 $ 11,442 $ 11,609 Basic: Weighted average common shares outstanding 13,125 $ 0.41 12,857 $ 0.41 13,073 $ 0.88 12,849 $ 0.90 Diluted: Add incremental shares for: Dilutive effect of stock option exercises 346 182 352 154 Total 13,471 $ 0.40 13,039 $ 0.40 13,425 $ 0.85 13,003 $ 0.89

NATURE OF OPERATIONS AND SUMM34

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Details)	Jun. 30, 2017office
Accounting Policies [Abstract]
Number of offices in which entity operates	16
Number of loan production offices in which entity operates	1

ACQUISITIONS (Details)

ACQUISITIONS (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)branch	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)branch	Jan. 01, 2015branch
Business Acquisition [Line Items]
Gain on sale of branch assets | $	$ 0	$ 0	$ 0	$ 2,050
Acquisition of F&M
Business Acquisition [Line Items]
Proceeds from sale of loans receivable | $				18,200
Proceeds for sale of deposits | $				26,600
Gain on sale of branch assets | $				$ 2,100
Disposed of by Sale
Business Acquisition [Line Items]
Number of branches agreed to be sold | branch		2		2
Enterprise
Business Acquisition [Line Items]
Number of branches | branch					9
Enterprise | Houston, Texas
Business Acquisition [Line Items]
Number of branches | branch					7
Enterprise | Central Texas
Business Acquisition [Line Items]
Number of branches | branch					2

GOODWILL AND CORE DEPOSIT INT36

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Narrative, Acquisitions (Details)	Jun. 30, 2017USD ($)
Acquisition of F&M
Business Acquisition [Line Items]
Goodwill impairment	$ 0

GOODWILL AND CORE DEPOSIT INT37

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Narrative, Dispositions (Details)	Jun. 30, 2016branch
Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of branches agreed to be sold	2

GOODWILL AND CORE DEPOSIT INT38

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Changes in Carrying Amount of Goodwill and Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Goodwill
Balance, beginning			$ 39,389	$ 39,389	$ 39,389
Balance, ending	$ 39,389		39,389		39,389
Core Deposit Intangibles
Balance, beginning			4,055
Amortization	(196)	$ (195)	(391)	(394)
Balance, ending	3,664		3,664		4,055
Core Deposit Intangibles
Core Deposit Intangibles
Balance, beginning			4,055	$ 5,230	5,230
Sale of branch assets					(390)
Amortization			(391)		(785)
Balance, ending	$ 3,664		$ 3,664		$ 4,055

GOODWILL AND CORE DEPOSIT INT39

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Estimated Aggregate Future Amortization Expense for Core Deposit Intangibles (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Remaining 2,017	$ 391
2,018	781
2,019	781
2,020	744
2,021	484
Thereafter	483
Total	$ 3,664	$ 4,055

SECURITIES - Narrative (Details

SECURITIES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Security owned and pledged as collateral	$ 5,000		$ 5,000		$ 4,900
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of available for sale securities		$ 0	9,000	$ 0
Corporate bonds and other
Schedule of Available-for-sale Securities [Line Items]
Proceeds from sales of available for sale securities	$ 9,000		$ 9,000

SECURITIES - Amortized Cost and

SECURITIES - Amortized Cost and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 320,584	$ 321,151
Gross Unrealized Gains	3,403	1,564
Gross Unrealized Losses	(2,719)	(6,260)
Fair Value	321,268	316,455
U.S. Government and agency securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	8,722	5,883
Gross Unrealized Gains	307	266
Gross Unrealized Losses	(24)	0
Fair Value	9,005	6,149
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	239,282	242,501
Gross Unrealized Gains	2,694	956
Gross Unrealized Losses	(2,359)	(5,655)
Fair Value	239,617	237,802
Agency mortgage-backed pass-through securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	27,991	27,496
Gross Unrealized Gains	218	265
Gross Unrealized Losses	(302)	(437)
Fair Value	27,907	27,324
Corporate bonds and other
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	44,589	45,271
Gross Unrealized Gains	184	77
Gross Unrealized Losses	(34)	(168)
Fair Value	$ 44,739	$ 45,180

SECURITIES - Amortized Cost a42

SECURITIES - Amortized Cost and Fair Value of Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Amortized Cost
Due in one year or less	$ 11,110
Due after one year through five years	62,750
Due after five years through ten years	96,802
Due after ten years	121,931
Subtotal	292,593
Agency mortgage-backed pass through securities	27,991
Total	320,584
Fair Value
Due in one year or less	11,136
Due after one year through five years	63,060
Due after five years through ten years	97,349
Due after ten years	121,816
Subtotal	293,361
Agency mortgage-backed pass through securities	27,907
Total	$ 321,268	$ 316,455

SECURITIES - Securities in a Co

SECURITIES - Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	$ 146,015	$ 216,025
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2,645)	(6,170)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	2,613	2,803
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	(74)	(90)
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	148,628	218,828
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(2,719)	(6,260)
U.S. Government and agency securities
Schedule of Available-for-sale Securities [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	1,271	0
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(24)	0
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	0	0
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	0	0
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	1,271	0
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(24)	0
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	119,872	178,876
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(2,359)	(5,655)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	0	0
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	0	0
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	119,872	178,876
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(2,359)	(5,655)
Agency mortgage-backed pass-through securities
Schedule of Available-for-sale Securities [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	12,779	12,520
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(228)	(347)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	2,613	2,803
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	(74)	(90)
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	15,392	15,323
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(302)	(437)
Corporate bonds and other
Schedule of Available-for-sale Securities [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	12,093	24,629
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(34)	(168)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	0	0
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	0	0
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	12,093	24,629
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	$ (34)	$ (168)

LOANS AND ALLOWANCE FOR LOAN 44

LOANS AND ALLOWANCE FOR LOAN LOSSES - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)	Jun. 30, 2016USD ($)	Jun. 30, 2017USD ($)loan	Jun. 30, 2016USD ($)loan	Dec. 31, 2016USD ($)
Loans and Allowance for Loan Losses [Abstract]
Recorded investment	$ 22,700		$ 22,700		$ 12,600
Change in method of calculating impairment	2,000		2,000		$ 879
Troubled debt restructuring, write-down	$ 12	$ 442	$ 407	$ 442
Number of contracts | loan			1	0

LOANS AND ALLOWANCE FOR LOAN 45

LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 2,114,652		$ 1,891,635
Allowance for loan losses	(21,010)	$ (18,687)	(17,911)	$ (14,917)	$ (13,757)	$ (13,098)
Loans, net	2,093,642		1,873,724
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	444,701		416,752
Allowance for loan losses	(6,282)	(5,284)	(5,059)	(4,105)	(4,057)	(3,644)
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	73,499		67,038
Allowance for loan losses	0	0	0	0	0	0
Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,008,027		891,989
Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	206,024		159,247
Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	267,939		246,987
Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	102,832		98,657
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	11,630		10,965
Allowance for loan losses	$ (683)	$ (54)	$ (61)	$ (69)	$ (70)	$ (67)

LOANS AND ALLOWANCE FOR LOAN 46

LOANS AND ALLOWANCE FOR LOAN LOSSES - Aging Analysis of the Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	$ 8,374	$ 4,268
Nonaccrual Loans	19,330	15,788
Current Loans	2,086,948	1,871,579
Total loans evaluated for impairment	2,114,652	1,891,635
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	1,720	1,939
Nonaccrual Loans	9,051	3,896
Current Loans	433,930	410,917
Total loans evaluated for impairment	444,701	416,752
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Nonaccrual Loans	0	0
Current Loans	73,499	67,038
Total loans evaluated for impairment	73,499	67,038
Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	3,563	1,661
Nonaccrual Loans	9,556	11,663
Current Loans	994,908	878,665
Total loans evaluated for impairment	1,008,027	891,989
Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	275	263
Nonaccrual Loans	0	0
Current Loans	205,749	158,984
Total loans evaluated for impairment	206,024	159,247
Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	1,403	280
Nonaccrual Loans	568	217
Current Loans	265,968	246,490
Total loans evaluated for impairment	267,939	246,987
Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	1,401	0
Nonaccrual Loans	0	0
Current Loans	101,431	98,657
Total loans evaluated for impairment	102,832	98,657
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	12	125
Nonaccrual Loans	155	12
Current Loans	11,463	10,828
Total loans evaluated for impairment	11,630	10,965
Financing Receivables, 30 to 89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	8,374	3,357
Financing Receivables, 30 to 89 Days Past Due | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	1,720	1,028
Financing Receivables, 30 to 89 Days Past Due | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Financing Receivables, 30 to 89 Days Past Due | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	3,563	1,661
Financing Receivables, 30 to 89 Days Past Due | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	275	263
Financing Receivables, 30 to 89 Days Past Due | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	1,403	280
Financing Receivables, 30 to 89 Days Past Due | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	1,401	0
Financing Receivables, 30 to 89 Days Past Due | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	12	125
Financing Receivables, Equal to Greater than 90 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	911
Financing Receivables, Equal to Greater than 90 Days Past Due | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	911
Financing Receivables, Equal to Greater than 90 Days Past Due | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	0	0
Financing Receivables, Equal to Greater than 90 Days Past Due | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Past Due and Still Accruing	$ 0	$ 0

LOANS AND ALLOWANCE FOR LOAN 47

LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired Loans by Loan Class (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
With no related allowance recorded:
Recorded investment with no related allowance recorded	$ 14,886	$ 17,270
Unpaid principal balance with no related allowance recorded	15,812	17,469
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	18,079	3,687
Impaired financing receivable, with related allowance, unpaid principal balance	19,375	3,907
Related Allowance	3,387	1,654
Total:
Recorded Investment	32,965	20,957
Unpaid Principal Balance	35,187	21,376
Related Allowance	3,387	1,654
Commercial and industrial
With no related allowance recorded:
Recorded investment with no related allowance recorded	5,268	5,300
Unpaid principal balance with no related allowance recorded	6,194	5,414
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	10,588	3,108
Impaired financing receivable, with related allowance, unpaid principal balance	11,663	3,328
Related Allowance	2,657	1,543
Total:
Recorded Investment	15,856	8,408
Unpaid Principal Balance	17,857	8,742
Related Allowance	2,657	1,543
Mortgage warehouse
With no related allowance recorded:
Recorded investment with no related allowance recorded	0	0
Unpaid principal balance with no related allowance recorded	0	0
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	0	0
Impaired financing receivable, with related allowance, unpaid principal balance	0	0
Related Allowance	0	0
Total:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Real estate | Commercial real estate (including multi-family residential)
With no related allowance recorded:
Recorded investment with no related allowance recorded	8,835	11,748
Unpaid principal balance with no related allowance recorded	8,835	11,833
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	7,341	573
Impaired financing receivable, with related allowance, unpaid principal balance	7,562	573
Related Allowance	580	105
Total:
Recorded Investment	16,176	12,321
Unpaid Principal Balance	16,397	12,406
Related Allowance	580	105
Real estate | Commercial real estate construction and land development
With no related allowance recorded:
Recorded investment with no related allowance recorded	210	0
Unpaid principal balance with no related allowance recorded	210	0
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	0	0
Impaired financing receivable, with related allowance, unpaid principal balance	0	0
Related Allowance	0	0
Total:
Recorded Investment	210	0
Unpaid Principal Balance	210	0
Related Allowance	0	0
Real estate | 1-4 family residential (including home equity)
With no related allowance recorded:
Recorded investment with no related allowance recorded	568	217
Unpaid principal balance with no related allowance recorded	568	217
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	0	0
Impaired financing receivable, with related allowance, unpaid principal balance	0	0
Related Allowance	0	0
Total:
Recorded Investment	568	217
Unpaid Principal Balance	568	217
Related Allowance	0	0
Real estate | Residential construction
With no related allowance recorded:
Recorded investment with no related allowance recorded	0	0
Unpaid principal balance with no related allowance recorded	0	0
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	0	0
Impaired financing receivable, with related allowance, unpaid principal balance	0	0
Related Allowance	0	0
Total:
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Related Allowance	0	0
Consumer and other
With no related allowance recorded:
Recorded investment with no related allowance recorded	5	5
Unpaid principal balance with no related allowance recorded	5	5
With an allowance recorded:
Impaired financing receivable, with related allowance, recorded investment	150	6
Impaired financing receivable, with related allowance, unpaid principal balance	150	6
Related Allowance	150	6
Total:
Recorded Investment	155	11
Unpaid Principal Balance	155	11
Related Allowance	$ 150	$ 6

LOANS AND ALLOWANCE FOR LOAN 48

LOANS AND ALLOWANCE FOR LOAN LOSSES - Average Impaired Loans and Interest Recognized (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	$ 33,937	$ 17,233	$ 34,389	$ 17,829
Interest Income Recognized	203	270	420	395
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	16,758	5,748	17,004	5,959
Interest Income Recognized	95	109	234	164
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	0	0	0	0
Interest Income Recognized	0	0	0	0
Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	16,239	11,221	16,338	11,599
Interest Income Recognized	103	164	180	222
Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	210	0	315	0
Interest Income Recognized	4	0	4	0
Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	571	229	572	233
Interest Income Recognized	0	(2)	1	8
Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	0	0	0	0
Interest Income Recognized	0	0	0	0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average Recorded Investment	159	35	160	38
Interest Income Recognized	$ 1	$ (1)	$ 1	$ 1

LOANS AND ALLOWANCE FOR LOAN 49

LOANS AND ALLOWANCE FOR LOAN LOSSES - Risk Category of Loans by Class (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 2,114,652	$ 1,891,635
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	444,701	416,752
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	73,499	67,038
Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,008,027	891,989
Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	206,024	159,247
Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	267,939	246,987
Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	102,832	98,657
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	11,630	10,965
Pass
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,993,852	1,786,344
Pass | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	406,655	384,979
Pass | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	73,499	67,038
Pass | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	943,534	834,781
Pass | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	195,180	149,010
Pass | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	262,972	242,208
Pass | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	100,756	97,808
Pass | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	11,256	10,520
Watch
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	40,937	36,793
Watch | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	11,003	11,784
Watch | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Watch | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	21,716	16,009
Watch | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	5,643	8,124
Watch | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	848	512
Watch | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,559	0
Watch | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	168	364
Special Mention
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	14,590	12,636
Special Mention | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	144
Special Mention | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	6,284	3,344
Special Mention | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Special Mention | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	6,168	6,804
Special Mention | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment		0
Special Mention | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	1,474	2,069
Special Mention | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	517	415
Special Mention | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	3	4
Substandard
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	65,273	55,862
Substandard | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	20,759	16,645
Substandard | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Substandard | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	36,609	34,395
Substandard | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	5,057	2,113
Substandard | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	2,645	2,198
Substandard | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	434
Substandard | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	203	77
Doubtful
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	0	0
Doubtful | Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment	$ 0	$ 0

LOANS AND ALLOWANCE FOR LOAN 50

LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Allowance for loan losses:
Balance, beginning of period	$ 18,687	$ 13,757	$ 17,911	$ 13,098
Provision for loan losses	3,007	1,645	4,350	2,355
Charge-offs	(1,108)	(497)	(1,735)	(594)
Recoveries	424	12	484	58
Net charge-offs	(684)	(485)	(1,251)	(536)
Balance, end of period	21,010	14,917	21,010	14,917
Allowance for loan losses related to:
Individually evaluated for impairment					$ 3,387	$ 1,654
Collectively evaluated for impairment					17,623	16,257
Total allowance for loan losses	18,687	13,757	17,911	13,098	21,010	17,911
Recorded investment in loans:
Individually evaluated for impairment					32,965	20,957
Collectively evaluated for impairment					2,081,687	1,870,678
Total loans evaluated for impairment					2,114,652	1,891,635
Commercial and industrial
Allowance for loan losses:
Balance, beginning of period	5,284	4,057	5,059	3,644
Provision for loan losses	1,692	480	2,498	859
Charge-offs	(1,108)	(442)	(1,735)	(443)
Recoveries	414	10	460	45
Net charge-offs	(694)	(432)	(1,275)	(398)
Balance, end of period	6,282	4,105	6,282	4,105
Allowance for loan losses related to:
Individually evaluated for impairment					2,657	1,543
Collectively evaluated for impairment					3,625	3,516
Total allowance for loan losses	5,284	4,057	5,059	3,644	6,282	5,059
Recorded investment in loans:
Individually evaluated for impairment					15,856	8,408
Collectively evaluated for impairment					428,845	408,344
Total loans evaluated for impairment					444,701	416,752
Mortgage warehouse
Allowance for loan losses:
Balance, beginning of period	0	0	0	0
Provision for loan losses	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Balance, end of period	0	0	0	0
Allowance for loan losses related to:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					0	0
Total allowance for loan losses	0	0	0	0	0	0
Recorded investment in loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					73,499	67,038
Total loans evaluated for impairment					73,499	67,038
Commercial real estate (including multi-family residential) | Commercial real estate (including multi-family residential)
Allowance for loan losses:
Balance, beginning of period	9,158	5,905	8,950	5,914
Provision for loan losses	170	984	378	1,061
Charge-offs	0	(43)	0	(129)
Recoveries	0	0	0	0
Net charge-offs	0	(43)	0	(129)
Balance, end of period	9,328	6,846	9,328	6,846
Allowance for loan losses related to:
Individually evaluated for impairment					580	105
Collectively evaluated for impairment					8,748	8,845
Total allowance for loan losses	9,158	5,905	8,950	5,914	9,328	8,950
Recorded investment in loans:
Individually evaluated for impairment					16,176	12,321
Collectively evaluated for impairment					991,851	879,668
Total loans evaluated for impairment					1,008,027	891,989
Commercial real estate (including multi-family residential) | Commercial real estate construction and land development
Allowance for loan losses:
Balance, beginning of period	1,608	1,352	1,217	1,221
Provision for loan losses	276	16	667	147
Charge-offs	0	0	0	0
Recoveries	10	0	10	0
Net charge-offs	10	0	10	0
Balance, end of period	1,894	1,368	1,894	1,368
Allowance for loan losses related to:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					1,894	1,217
Total allowance for loan losses	1,608	1,352	1,217	1,221	1,894	1,217
Recorded investment in loans:
Individually evaluated for impairment					210	0
Collectively evaluated for impairment					205,814	159,247
Total loans evaluated for impairment					206,024	159,247
Commercial real estate (including multi-family residential) | 1-4 family residential (including home equity)
Allowance for loan losses:
Balance, beginning of period	1,846	1,484	1,876	1,432
Provision for loan losses	142	158	102	200
Charge-offs	0	0	0	0
Recoveries	0	0	10	10
Net charge-offs	0	0	10	10
Balance, end of period	1,988	1,642	1,988	1,642
Allowance for loan losses related to:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					1,988	1,876
Total allowance for loan losses	1,846	1,484	1,876	1,432	1,988	1,876
Recorded investment in loans:
Individually evaluated for impairment					568	217
Collectively evaluated for impairment					267,371	246,770
Total loans evaluated for impairment					267,939	246,987
Commercial real estate (including multi-family residential) | Residential construction
Allowance for loan losses:
Balance, beginning of period	737	889	748	820
Provision for loan losses	98	(2)	87	67
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Net charge-offs	0	0	0	0
Balance, end of period	835	887	835	887
Allowance for loan losses related to:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					835	748
Total allowance for loan losses	737	889	748	820	835	748
Recorded investment in loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					102,832	98,657
Total loans evaluated for impairment					102,832	98,657
Consumer and other
Allowance for loan losses:
Balance, beginning of period	54	70	61	67
Provision for loan losses	629	9	618	21
Charge-offs	0	(12)	0	(22)
Recoveries	0	2	4	3
Net charge-offs	0	(10)	4	(19)
Balance, end of period	683	69	683	69
Allowance for loan losses related to:
Individually evaluated for impairment					150	6
Collectively evaluated for impairment					533	55
Total allowance for loan losses	$ 54	$ 70	$ 61	$ 67	683	61
Recorded investment in loans:
Individually evaluated for impairment					155	11
Collectively evaluated for impairment					11,475	10,954
Total loans evaluated for impairment					$ 11,630	$ 10,965

LOANS AND ALLOWANCE FOR LOAN 51

LOANS AND ALLOWANCE FOR LOAN LOSSES - Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017USD ($)loan	Jun. 30, 2016USD ($)loan	Jun. 30, 2017USD ($)loan	Jun. 30, 2016USD ($)loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	4	10	7	19
Pre- Modification of Outstanding Recorded Investment	$ 8,767	$ 3,054	$ 10,497	$ 9,188
Post- Modification of Outstanding Recorded Investment	$ 8,767	$ 3,054	$ 10,497	$ 9,188
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	2	8	3	12
Pre- Modification of Outstanding Recorded Investment	$ 1,604	$ 2,058	$ 1,920	$ 2,931
Post- Modification of Outstanding Recorded Investment	$ 1,604	$ 2,058	$ 1,920	$ 2,931
Mortgage warehouse
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	0	0	0	0
Pre- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Real estate | Commercial real estate (including multi-family residential)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	1	2	2	6
Pre- Modification of Outstanding Recorded Investment	$ 6,953	$ 996	$ 8,281	$ 6,250
Post- Modification of Outstanding Recorded Investment	$ 6,953	$ 996	$ 8,281	$ 6,250
Real estate | Commercial real estate construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	1	0	1	0
Pre- Modification of Outstanding Recorded Investment	$ 210	$ 0	$ 210	$ 0
Post- Modification of Outstanding Recorded Investment	$ 210	$ 0	$ 210	$ 0
Real estate | 1-4 family residential (including home equity)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	0	0	1	0
Pre- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 86	$ 0
Post- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 86	$ 0
Real estate | Residential construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	0	0	0	0
Pre- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Post- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 0
Consumer and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of Contracts | loan	0	0	0	1
Pre- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 7
Post- Modification of Outstanding Recorded Investment	$ 0	$ 0	$ 0	$ 7

FAIR VALUE - Narrative (Details

FAIR VALUE - Narrative (Details) - USD ($)	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired financing receivable, with related allowance, recorded investment	$ 18,079,000	$ 3,687,000
Impaired financing receivable, with related allowance, unpaid principal balance	19,375,000	3,907,000
Liabilities, fair value disclosure, recurring	0	0
Related allowance	3,387,000	1,654,000
Other real estate owned	365,000	1,503,000
Recorded investment of commercial real estate land loans	71,000	1,500,000
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired financing receivable, with related allowance, recorded investment	16,000,000	2,300,000
Impaired financing receivable, with related allowance, unpaid principal balance	19,400,000	3,900,000
Related allowance	3,400,000	$ 1,700,000
Other real estate owned	$ 365,000

FAIR VALUE - Carrying Amounts a

FAIR VALUE - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 321,268	$ 316,455
FHLB stock	16,675	13,175
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	187,491	142,098
Available for sale securities	321,268	316,455
Loans held for investment, net of allowance	2,093,642	1,873,724
Accrued interest receivable	9,284	9,007
Deposits	2,099,242	1,870,183
Accrued interest payable	466	285
Borrowed funds	310,569	285,569
Subordinated debentures	9,249	9,196
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	187,491	142,098
Available for sale securities	321,268	316,455
Loans held for investment, net of allowance	2,091,832	1,872,056
Accrued interest receivable	9,284	9,007
Deposits	2,097,821	1,868,429
Accrued interest payable	466	285
Borrowed funds	310,349	284,989
Subordinated debentures	9,249	9,196
Estimated Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	187,491	142,098
Available for sale securities	0	0
Loans held for investment, net of allowance	0	0
Accrued interest receivable	2	3
Deposits	0	0
Accrued interest payable	0	0
Borrowed funds	0	0
Subordinated debentures	0	0
Estimated Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Available for sale securities	321,268	316,455
Loans held for investment, net of allowance	0	0
Accrued interest receivable	3,707	3,616
Deposits	2,097,821	1,868,429
Accrued interest payable	466	285
Borrowed funds	310,349	284,989
Subordinated debentures	9,249	9,196
Estimated Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Available for sale securities	0	0
Loans held for investment, net of allowance	2,091,832	1,872,056
Accrued interest receivable	5,575	5,388
Deposits	0	0
Accrued interest payable	0	0
Borrowed funds	0	0
Subordinated debentures	$ 0	$ 0

FAIR VALUE - Fair Values for As

FAIR VALUE - Fair Values for Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 321,268	$ 316,455
U.S. Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	9,005	6,149
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	239,617	237,802
Agency mortgage-backed pass-through securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	27,907	27,324
Corporate bonds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	44,739	45,180
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	321,268	316,455
Recurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	321,268	316,455
Recurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | U.S. Government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	9,005	6,149
Recurring Basis | U.S. Government and agency securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | U.S. Government and agency securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	9,005	6,149
Recurring Basis | U.S. Government and agency securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	239,617	237,802
Recurring Basis | Municipal securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Municipal securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	239,617	237,802
Recurring Basis | Municipal securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Agency mortgage-backed pass-through securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	27,907	27,324
Recurring Basis | Agency mortgage-backed pass-through securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Agency mortgage-backed pass-through securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	27,907	27,324
Recurring Basis | Agency mortgage-backed pass-through securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Corporate bonds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	44,739	45,180
Recurring Basis | Corporate bonds and other | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	0	0
Recurring Basis | Corporate bonds and other | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	44,739	45,180
Recurring Basis | Corporate bonds and other | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 0	$ 0

FAIR VALUE - Assets and Liabili

FAIR VALUE - Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets and liabilities are measured at fair value, nonrecurring basis	$ 0	$ 0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets and liabilities are measured at fair value, nonrecurring basis	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets and liabilities are measured at fair value, nonrecurring basis	16,353	3,756
Nonrecurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Nonrecurring Basis | Level 1 | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans:	0	0
Nonrecurring Basis | Level 1 | Commercial real estate (including multi-family residential)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans:	0	0
Nonrecurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	0	0
Nonrecurring Basis | Level 2 | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans:	0	0
Nonrecurring Basis | Level 2 | Commercial real estate (including multi-family residential)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans:	0	0
Nonrecurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	365	1,503
Nonrecurring Basis | Level 3 | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans:	9,006	1,785
Nonrecurring Basis | Level 3 | Commercial real estate (including multi-family residential)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans:	$ 6,982	$ 468

DEPOSITS - Narrative (Details)

DEPOSITS - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Deposit Liabilities [Abstract]
Time deposits 250,000 or more	$ 213.3	$ 196.5
Brokered deposits	141.1	65.9
Reciprocal deposits	$ 67.9	$ 64.8

DEPOSITS - Time Deposits by Mat

DEPOSITS - Time Deposits by Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Deposit Liabilities [Abstract]
Within one year	$ 489,200
After one but within two years	173,741
After two but within three years	48,524
After three but within four years	20,049
After four but within five years	32,225
Total	$ 763,739	$ 678,394

BORROWINGS AND BORROWING CAPA58

BORROWINGS AND BORROWING CAPACITY - Narrative (Details) - USD ($)	1 Months Ended	6 Months Ended		12 Months Ended
	Oct. 31, 2015	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Increase (decrease) in other borrowings				$ 18,000,000	$ 10,100,000
Repayments of debt	$ 27,500,000	$ 0	$ 20,000,000
Borrowing Agreement | Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate		0.25%
Interest rate, effective percentage		4.00%
Federal Home Loan Bank of Dallas
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 840,400,000
Remaining borrowing capacity		495,000,000
Long-term line of credit		345,400,000
Outstanding amount		35,400,000
Federal Home Loan Bank of Dallas | Expire in August 2017
Debt Instrument [Line Items]
Outstanding amount		7,300,000
Federal Home Loan Bank of Dallas | Expire in October 2017
Debt Instrument [Line Items]
Outstanding amount		25,000,000
Federal Home Loan Bank of Dallas | Expire in February 2018
Debt Instrument [Line Items]
Outstanding amount		3,100,000
Federal Home Loan Bank of Dallas | Short-term Debt
Debt Instrument [Line Items]
Federal Home Loan Bank, advances		$ 310,000,000
Federal Home Loan Bank of Dallas | Short-term Debt | Weighted Average
Debt Instrument [Line Items]
Federal Home Loan Bank, advances, interest rate		1.27%

BORROWINGS AND BORROWING CAPA59

BORROWINGS AND BORROWING CAPACITY - Scheduled Principal Maturities (Details) $ in Thousands	Jun. 30, 2017USD ($)
Debt Disclosure [Abstract]
Remaining 2,017	$ 0
2,018	0
2,019	0
2,020	0
2021 and thereafter	569
Total	$ 569

SUBORDINATED DEBENTURES - Narra

SUBORDINATED DEBENTURES - Narrative (Details)	6 Months Ended
	Jun. 30, 2017USD ($)
Subordinated Borrowing [Line Items]
Debentures, period over which company may defer interest payments	5 years
Junior subordinated debt owed to trusts	$ 11,300,000
Junior Subordinated Debt
Subordinated Borrowing [Line Items]
Junior subordinated debt owed to trusts	11,341,000
F&M Bancshares. Inc. | Junior Subordinated Debt
Subordinated Borrowing [Line Items]
Debt instrument, face amount	11,300,000
Borrowed funds	9,200,000
Debt instrument, unamortized discount	$ 2,500,000

SUBORDINATED DEBENTURES - Summa

SUBORDINATED DEBENTURES - Summary of Pertinent Information Related to Junior Subordinated Debentures (Details)	6 Months Ended
	Jun. 30, 2017USD ($)
Subordinated Borrowing [Line Items]
Junior Subordinated Debt Owed to Trusts	$ 11,300,000
Junior Subordinated Debt
Subordinated Borrowing [Line Items]
Junior Subordinated Debt Owed to Trusts	$ 11,341,000
Junior Subordinated Debt | Farmers & Merchants Capital Trust II
Subordinated Borrowing [Line Items]
Issuance Date	Nov. 13, 2003
Trust Preferred Securities Outstanding	$ 7,500,000
Junior Subordinated Debt Owed to Trusts	$ 7,732,000
Maturity Date	Nov. 8, 2033
Junior Subordinated Debt | Farmers & Merchants Capital Trust II | 3 month LIBOR
Subordinated Borrowing [Line Items]
Interest Rate	3.00%
Interest rate, period end	1.2624%
Junior Subordinated Debt | Farmers & Merchants Capital Trust III
Subordinated Borrowing [Line Items]
Issuance Date	Jun. 30, 2005
Trust Preferred Securities Outstanding	$ 3,500,000
Junior Subordinated Debt Owed to Trusts	$ 3,609,000
Maturity Date	Jul. 7, 2035
Junior Subordinated Debt | Farmers & Merchants Capital Trust III | 3 month LIBOR
Subordinated Borrowing [Line Items]
Interest Rate	1.80%

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($)	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income tax expense	$ 1,721,000		$ 2,339,000	$ 3,251,000	$ 5,409,000
Effective income tax Rate reconciliation, percent	24.20%		30.80%	22.10%	31.80%
Unrecognized tax benefits, income tax penalties and interest expense				$ 0	$ 0
Increase in tax free income from purchase of municipal securities		6.50%
Impact on the tax rate due to the excess tax benefit on stock options exercised		7.70%

STOCK BASED COMPENSATION - Narr

STOCK BASED COMPENSATION - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1,900,000		1,900,000
Share-based compensation expense	$ 456	$ 354	$ 797	$ 707
Option, cumulative options granted since inception (in shares)	1,271,931		1,271,931
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period			10 years
Award vesting period			4 years
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Equity instruments other than options, grants in period (in shares)			27,373

STOCK BASED COMPENSATION - Stoc

STOCK BASED COMPENSATION - Stock Option Plan Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Number of Options
Options outstanding, beginning balance (in shares)	935
Options granted (in shares)	31
Options exercised (in shares)	(166)
Options forfeited (in shares)	0
Options outstanding, ending balance (in shares)	800	935
Nuber of Options, Options vested and exercisable (in shares)	495
Weighted Average Exercise Price
Options outstanding, beginning balance (in dollars per share)	$ 18.21
Options granted (in dollars per share)	35.45
Options exercised (in dollars per share)	17.39
Options forfeited (in dollars per share)	0
Options outstanding, ending balance (in dollars per share)	19.11	$ 18.21
Weighted Average Exercise Price, Options vested and exercisable (in dollars per share)	$ 16.56
Weighted Average Remaining Contractual Term, Options outstanding	6 years 7 days	6 years 2 months 23 days
Weighted Average Remaining Contractual Term, Options vested and exercisable	4 years 9 months 4 days
Aggregate Intrinsic Value, Options outstanding	$ 15,356	$ 16,773
Aggregate Intrinsic Value, Options vested and exercisable	$ 10,767

STOCK BASED COMPENSATION - Summ

STOCK BASED COMPENSATION - Summary of Restricted Stock Activity (Details) - Restricted Stock shares in Thousands	6 Months Ended
	Jun. 30, 2017$ / sharesshares
Number of Shares
Nonvested share awards outstanding, beginning balance (in shares) | shares	24
Share awards granted (in shares) | shares	27
Share awards vested (in shares) | shares	(10)
Unvested share awards forfeited (in shares) | shares	0
Nonvested share awards outstanding, ending balance (in shares) | shares	41
Weighted Average Grant Date Fair Value
Nonvested share awards outstanding, beginning balance (in dollars per share) | $ / shares	$ 18.31
Share awards granted (in dollars per share) | $ / shares	36.14
Share awards vested (in dollars per share) | $ / shares	18.64
Unvested share awards forfeited (in dollars per share) | $ / shares	0
Nonvested share awards outstanding, ending balance (in dollars per share) | $ / shares	$ 30.12

OFF-BALANCE SHEET ARRANGEMENT66

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES - Narrative (Details)	6 Months Ended
	Jun. 30, 2017
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to make loans, period	120 days
Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet fixed rate loan commitments, interest rate	1.60%
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet fixed rate loan commitments, interest rate	7.50%
Weighted Average
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet fixed rate loan commitments, interest rate	5.05%
Off-balance-sheet fixed rate loan commitments, weighted average maturity	2 years 7 months 20 days

OFF-BALANCE SHEET ARRANGEMENT67

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES - Contractual Amounts of Financial Instruments With Off-balance Sheet Risk (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	$ 347,308	$ 363,245
Variable Rate	252,914	232,675
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	336,397	353,822
Variable Rate	251,239	232,551
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	10,911	9,423
Variable Rate	$ 1,675	$ 124

REGULATORY CAPITAL MATTERS - Na

REGULATORY CAPITAL MATTERS - Narrative (Details)	Dec. 31, 2018	Jun. 30, 2017	Dec. 31, 2015
Banking and Thrift [Abstract]
Capital conservation buffer, phase in amount			0.625%
Capital conservation buffer, increase per year		0.625%
Forecast
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital conservation buffer	2.50%

REGULATORY CAPITAL MATTERS - Ac

REGULATORY CAPITAL MATTERS - Actual and Required Capital (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Total Capital
Capital	$ 285,954	$ 268,155
Capital to Risk Weighted Assets	12.13%	12.57%
Capital Required for Capital Adequacy	$ 188,607	$ 170,690
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Plus Capital Conservation Buffer	$ 218,076	$ 184,025
Plus Capital Conservation Buffer to Risk Weighted Assets	9.25%	8.625%
Common Equity Tier 1 Capital
Common Equity Tier One Risk Based Capital	$ 255,694	$ 241,048
Common Equity Tier One Risk Based Capital to Risk Weighted Assets	10.85%	11.30%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy	$ 106,091	$ 96,013
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%	4.50%
Plus Common Equity Tier One Risk Based Capital	$ 135,561	$ 109,348
Plus Common Equity Tier One Risk Based Capital to Risk Weighted Assets	5.75%	5.125%
Tier I Capital
Tier One Risk Based Capital	$ 264,943	$ 250,244
Tier One Risk Based Capital to Risk Weighted Assets	11.24%	11.73%
Tier One Risk Based Capital Required for Capital Adequacy	$ 141,455	$ 128,018
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Plus Tier One Risk Based Capital	$ 170,925	$ 141,353
Plus Tier One Risk Based Capital to Risk Weighted Assets	7.25%	6.625%
Tier I Capital
Tier One Leverage Capital	$ 264,943	$ 250,244
Tier One Leverage Capital to Average Assets	10.11%	10.35%
Tier One Leverage Capital Required for Capital Adequacy	$ 104,820	$ 96,708
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Plus Tier One Leverage Capital	$ 104,820	$ 96,708
Plus Tier One Leverage Capital to Average Assets	4.00%	4.00%
Allegiance Bank
Total Capital
Capital	$ 262,068	$ 247,606
Capital to Risk Weighted Assets	11.12%	11.61%
Capital Required for Capital Adequacy	$ 188,523	$ 170,630
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Plus Capital Conservation Buffer	$ 217,980	$ 183,960
Plus Capital Conservation Buffer to Risk Weighted Assets	9.25%	8.625%
Capital Required to be Well Capitalized	$ 235,654	$ 213,288
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Common Equity Tier 1 Capital
Common Equity Tier One Risk Based Capital	$ 241,057	$ 229,694
Common Equity Tier One Risk Based Capital to Risk Weighted Assets	10.23%	10.77%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy	$ 106,044	$ 95,979
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%	4.50%
Plus Common Equity Tier One Risk Based Capital	$ 135,501	$ 109,310
Plus Common Equity Tier One Risk Based Capital to Risk Weighted Assets	5.75%	5.125%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized	$ 153,175	$ 138,637
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Tier I Capital
Tier One Risk Based Capital	$ 241,057	$ 229,694
Tier One Risk Based Capital to Risk Weighted Assets	10.23%	10.77%
Tier One Risk Based Capital Required for Capital Adequacy	$ 141,392	$ 127,973
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Plus Tier One Risk Based Capital	$ 170,849	$ 141,303
Plus Tier One Risk Based Capital to Risk Weighted Assets	7.25%	6.625%
Tier One Risk Based Capital Required to be Well Capitalized	$ 188,523	$ 170,630
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	8.00%
Tier I Capital
Tier One Leverage Capital	$ 241,057	$ 229,694
Tier One Leverage Capital to Average Assets	9.20%	9.50%
Tier One Leverage Capital Required for Capital Adequacy	$ 104,781	$ 96,679
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Plus Tier One Leverage Capital	$ 104,781	$ 96,679
Plus Tier One Leverage Capital to Average Assets	4.00%	4.00%
Tier One Leverage Capital Required to be Well Capitalized	$ 130,976	$ 120,849
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%

EARNINGS PER COMMON SHARE - Nar

EARNINGS PER COMMON SHARE - Narrative) (Details) - shares	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)		0
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	14,000

EARNINGS PER COMMON SHARE - Sum

EARNINGS PER COMMON SHARE - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Earnings Per Share [Abstract]
Net income attributable to common shareholders	$ 5,395	$ 5,254	$ 11,442	$ 11,609
Basic:
Weighted average common shares outstanding (in shares)	13,125	12,857	13,073	12,849
Weighted average common shares outstanding (in dollars per share)	$ 0.41	$ 0.41	$ 0.88	$ 0.90
Diluted:
Dilutive effect of stock option exercises (in shares)	346	182	352	154
Total (in shares)	13,471	13,039	13,425	13,003
Total (in dollars per share)	$ 0.40	$ 0.40	$ 0.85	$ 0.89