LOANS AND ALLOWANCE (Details 2) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Allowance for loan losses
Balance at the beginning of the period	$ 23,250	$ 23,250	$ 27,609
Provision charged to expense			750
Losses charged off		(1,356)	(2,040)
Recoveries		744	928
Balance at the end of the period		22,638	27,247
Allowance for loan losses
Ending Balance individually evaluated for impairment	1,050	984		1,050
Ending Balance collectively evaluated for impairment	22,200	21,654		22,200
Total ending allowance balance		22,638	27,247
Loans
Ending Balance individually evaluated for impairment	36,309	25,025		36,309
Ending Balance collectively evaluated for impairment	1,921,456	1,944,438		1,921,456
Total ending loan balance excluding accrued interest	1,957,765	1,969,463		1,957,765
Accrued interest	5,605	5,838		5,605
Allowance that includes a probability of default for subject loans	2,426	2,268
Commercial
Allowance for loan losses
Balance at the beginning of the period		2,977	3,291
Provision charged to expense		773	(163)
Losses charged off		(107)	(146)
Recoveries		32	27
Balance at the end of the period		3,675	3,009
Allowance for loan losses
Ending Balance individually evaluated for impairment	162	130		162
Ending Balance collectively evaluated for impairment	2,815	3,545		2,815
Total ending allowance balance		3,675	3,009
Loans
Ending Balance individually evaluated for impairment	705	1,113		705
Ending Balance collectively evaluated for impairment	321,725	331,925		321,725
Total ending loan balance excluding accrued interest	322,430	333,038		322,430
Commercial Real Estate
Allowance for loan losses
Balance at the beginning of the period		15,605	20,210
Provision charged to expense		(1,005)	393
Losses charged off		(58)	(608)
Recoveries		176	444
Balance at the end of the period		14,718	20,439
Allowance for loan losses
Ending Balance individually evaluated for impairment	705	675		705
Ending Balance collectively evaluated for impairment	14,900	14,043		14,900
Total ending allowance balance		14,718	20,439
Loans
Ending Balance individually evaluated for impairment	24,722	13,297		24,722
Ending Balance collectively evaluated for impairment	855,146	868,953		855,146
Total ending loan balance excluding accrued interest	879,868	882,250		879,868
Residential
Allowance for loan losses
Balance at the beginning of the period		3,501	3,409
Provision charged to expense		173	245
Losses charged off		(494)	(543)
Recoveries		148	85
Balance at the end of the period		3,328	3,196
Allowance for loan losses
Ending Balance individually evaluated for impairment	183	179		183
Ending Balance collectively evaluated for impairment	3,318	3,149		3,318
Total ending allowance balance		3,328	3,196
Loans
Ending Balance individually evaluated for impairment	10,662	10,421		10,662
Ending Balance collectively evaluated for impairment	698,833	698,522		698,833
Total ending loan balance excluding accrued interest	709,495	708,943		709,495
Consumer
Allowance for loan losses
Balance at the beginning of the period		1,167	699
Provision charged to expense		59	275
Losses charged off		(697)	(743)
Recoveries		388	372
Balance at the end of the period		917	603
Allowance for loan losses
Ending Balance collectively evaluated for impairment	1,167	917		1,167
Total ending allowance balance		917	603
Loans
Ending Balance individually evaluated for impairment	220	194		220
Ending Balance collectively evaluated for impairment	45,752	45,038		45,752
Total ending loan balance excluding accrued interest	$ 45,972	$ 45,232		$ 45,972