LOANS AND ALLOWANCE (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Allowance for loan losses
Balance at the beginning of the period	$ 31,728	$ 38,541	$ 32,227	$ 39,889
Provision charged to expense	1,000	2,500	2,734	5,600
Losses charged off	(5,476)	(3,783)	(8,472)	(9,704)
Recoveries	750	(1,031)	1,513	2,504
Balance at the end of the period	28,002	38,289	28,002	38,289
Allowance for loan losses
Ending Balance individually evaluated for impairment	1,749		1,749		3,217
Ending Balance collectively evaluated for impairment	26,253		26,253		29,010
Total ending allowance balance	28,002	38,289	28,002	38,289
Loans
Ending Balance individually evaluated for impairment	42,752		42,752		50,554
Ending Balance collectively evaluated for impairment	1,540,529		1,540,529		1,502,829
Total ending loan balance excluding accrued interest	1,583,281		1,583,281		1,553,383
Accrued interest	5,222		5,222		5,206
Commercial
Allowance for loan losses
Balance at the beginning of the period	4,279	5,331	3,894	5,562
Provision charged to expense	(38)	(577)	487	(795)
Losses charged off	(696)	(97)	(967)	(277)
Recoveries	90	288	221	455
Balance at the end of the period	3,635	4,945	3,635	4,945
Allowance for loan losses
Ending Balance individually evaluated for impairment	280		280		150
Ending Balance collectively evaluated for impairment	3,355		3,355		3,744
Total ending allowance balance	3,635	4,945	3,635	4,945
Loans
Ending Balance individually evaluated for impairment	981		981		1,797
Ending Balance collectively evaluated for impairment	164,569		164,569		154,714
Total ending loan balance excluding accrued interest	165,550		165,550		156,511
Commercial Real Estate
Allowance for loan losses
Balance at the beginning of the period	23,238	30,240	24,157	30,476
Provision charged to expense	93	1,198	331	4,091
Losses charged off	(3,478)	(2,181)	(4,686)	(6,089)
Recoveries	255	323	306	1,102
Balance at the end of the period	20,108	29,580	20,108	29,580
Allowance for loan losses
Ending Balance individually evaluated for impairment	1,359		1,359		3,067
Ending Balance collectively evaluated for impairment	18,749		18,749		21,090
Total ending allowance balance	20,108	29,580	20,108	29,580
Loans
Ending Balance individually evaluated for impairment	28,189		28,189		33,499
Ending Balance collectively evaluated for impairment	705,618		705,618		696,554
Total ending loan balance excluding accrued interest	733,807		733,807		730,053
Residential
Allowance for loan losses
Balance at the beginning of the period	3,263	2,012	3,180	2,972
Provision charged to expense	740	1,527	1,371	1,709
Losses charged off	(621)	(618)	(1,319)	(1,832)
Recoveries	77	54	227	126
Balance at the end of the period	3,459	2,975	3,459	2,975
Allowance for loan losses
Ending Balance individually evaluated for impairment	108		108
Ending Balance collectively evaluated for impairment	3,351		3,351		3,180
Total ending allowance balance	3,459	2,975	3,459	2,975
Loans
Ending Balance individually evaluated for impairment	12,679		12,679		14,175
Ending Balance collectively evaluated for impairment	625,970		625,970		604,349
Total ending loan balance excluding accrued interest	638,649		638,649		618,524
Consumer
Allowance for loan losses
Balance at the beginning of the period	948	958	996	879
Provision charged to expense	205	352	545	595
Losses charged off	(681)	(887)	(1,500)	(1,506)
Recoveries	328	366	759	821
Balance at the end of the period	800	789	800	789
Allowance for loan losses
Ending Balance individually evaluated for impairment	2		2
Ending Balance collectively evaluated for impairment	798		798		996
Total ending allowance balance	800	789	800	789
Loans
Ending Balance individually evaluated for impairment	903		903		1,083
Ending Balance collectively evaluated for impairment	44,372		44,372		47,212
Total ending loan balance excluding accrued interest	$ 45,275		$ 45,275		$ 48,295