LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowance for loan and lease losses (Details 4) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Allowance for loan losses:
Beginning balance				$ 8,421
Provision		$ 2,050	$ 850	4,062	$ 2,875
Ending balance		8,469		8,469
Non-covered Loans
Allowance for loan losses:
Beginning balance		8,421	7,973	8,421	7,393
Charge offs		(2,161)	(766)	(4,225)	(2,390)
Recoveries		159	80	211	259
Provision		2,050	850	4,062	2,875
Ending balance		8,469	8,137	8,469	8,137
Commercial real estate - owner occupied | Non-covered Loans
Allowance for loan losses:
Beginning balance		721	1,054	1,185	855
Charge offs		(798)	(66)	(798)	(1,067)
Recoveries			12		16
Provision		916	3	452	1,199
Ending balance		839	1,003	839	1,003
Commercial Real Estate Non-owner Occupied | Non-covered Loans
Allowance for loan losses:
Beginning balance	[1]	1,403	1,524	1,222	1,123
Charge offs	[1]
Recoveries	[1]		6	1	18
Provision	[1]	196	(244)	376	145
Ending balance	[1]	1,599	1,286	1,599	1,286
Construction and Land Loans | Non-covered Loans
Allowance for loan losses:
Beginning balance		855	1,052	865	1,644
Charge offs				(450)
Recoveries		120		120	139
Provision		(328)	(79)	112	(810)
Ending balance		647	973	647	973
Commercial loans | Non-covered Loans
Allowance for loan losses:
Beginning balance		3,345	2,421	3,041	2,063
Charge offs		(1,363)	(448)	(2,633)	(1,067)
Recoveries		33	60	78	79
Provision		1,257	908	2,786	1,866
Ending balance		3,272	2,941	3,272	2,941
1-4 Family Residential | Non-covered Loans
Allowance for loan losses:
Beginning balance	[2]	1,262	1,224	1,408	1,322
Charge offs	[2]		(250)	(22)	(250)
Recoveries	[2]	4	2	8	7
Provision	[2]	95	186	(33)	83
Ending balance	[2]	1,361	1,162	1,361	1,162
Other consumer loans | Non-covered Loans
Allowance for loan losses:
Beginning balance		122	46	48	49
Charge offs			(2)	(322)	(6)
Recoveries		2		4
Provision		(41)	4	353	5
Ending balance		83	48	83	48
Unallocated | Non-covered Loans
Allowance for loan losses:
Beginning balance		713	652	652	337
Charge offs
Recoveries
Provision		(45)	72	16	387
Ending balance		$ 668	$ 724	$ 668	$ 724

[1] Includes loans secured by farmland and multi-family residential loans.

[2] Includes home equity lines of credit.