Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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LOANS AND ALLOWANCE FOR LOAN LOSSES - Summary of Loan Portfolio by Type of Loan (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Aug. 06, 2016	Dec. 31, 2015	Dec. 31, 2014
Loans held for investment:
Total loans	$ 1,359,544	$ 1,243,925		$ 1,067,377
Deferred loan fees	1,094	1,210
Allowance for loan losses	(12,859)	(11,484)		(9,263)	$ (7,721)
Total net loans	1,347,779	1,233,651
Commercial and industrial
Loans held for investment:
Total loans	197,508	223,712		181,716
Allowance for loan losses	(1,581)	(1,592)		(1,878)	(1,473)
Construction and development
Loans held for investment:
Total loans	196,774	129,631		122,904
Allowance for loan losses	(1,724)	(1,161)		(1,004)	(615)
Commercial real estate
Loans held for investment:
Total loans	418,137	368,077		301,910
Allowance for loan losses	(4,585)	(3,264)		(2,106)	(1,870)
Farmland
Loans held for investment:
Total loans	59,023	62,366		47,668
Allowance for loan losses	(523)	(482)		(400)	(387)
1-4 family residential
Loans held for investment:
Total loans	374,371	361,665		312,306
Allowance for loan losses	(3,022)	(3,960)		(2,839)	(2,395)
Multi-family residential
Loans held for investment:
Total loans	36,574	26,079		30,395
Allowance for loan losses	(629)	(281)		(325)	(232)
Consumer
Loans held for investment:
Total loans	51,267	53,177		50,641
Allowance for loan losses	(602)	(585)		(562)	(593)
Agricultural
Loans held for investment:
Total loans	25,596	18,901		19,524
Allowance for loan losses	(187)	(153)		(138)	(137)
Overdrafts
Loans held for investment:
Total loans	294	317		313
Allowance for loan losses	$ (6)	(6)		$ (11)	$ (19)
Denton, Texas Branch Location
Loans held for investment:
Total loans		2	$ 2
Denton, Texas Branch Location \| Overdrafts
Loans held for investment:
Total loans		$ 2