LOANS AND ALLOWANCE (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Allowance for loan losses
Balance at the beginning of the period	$ 28,002	$ 38,289	$ 32,227	$ 39,889
Provision charged to expense	1,000	2,000	3,734	7,600
Losses charged off	(1,987)	(6,154)	(10,459)	(15,858)
Recoveries	834	1,111	2,347	3,615
Balance at the end of the period	27,849	35,246	27,849	35,246
Allowance for loan losses
Ending Balance individually evaluated for impairment	1,630		1,630		3,217
Ending Balance collectively evaluated for impairment	26,219		26,219		29,010
Total ending allowance balance	27,849	35,246	27,849	35,246
Loans
Ending Balance individually evaluated for impairment	38,765		38,765		50,554
Ending Balance collectively evaluated for impairment	1,572,225		1,572,225		1,502,829
Total ending loan balance excluding accrued interest	1,610,990		1,610,990		1,553,383
Accrued interest	5,104		5,104		5,206
Commercial
Allowance for loan losses
Balance at the beginning of the period	3,635	4,945	3,894	5,562
Provision charged to expense	(121)	223	366	(572)
Losses charged off	(91)	(178)	(1,058)	(455)
Recoveries	41	67	262	522
Balance at the end of the period	3,464	5,057	3,464	5,057
Allowance for loan losses
Ending Balance individually evaluated for impairment	65		65		150
Ending Balance collectively evaluated for impairment	3,399		3,399		3,744
Total ending allowance balance	3,464	5,057	3,464	5,057
Loans
Ending Balance individually evaluated for impairment	521		521		1,797
Ending Balance collectively evaluated for impairment	175,071		175,071		154,714
Total ending loan balance excluding accrued interest	175,592		175,592		156,511
Commercial Real Estate
Allowance for loan losses
Balance at the beginning of the period	20,108	29,580	24,157	30,476
Provision charged to expense	175	464	506	4,555
Losses charged off	(584)	(3,936)	(5,270)	(10,025)
Recoveries	258	528	564	1,630
Balance at the end of the period	19,957	26,636	19,957	26,636
Allowance for loan losses
Ending Balance individually evaluated for impairment	1,457		1,457		3,067
Ending Balance collectively evaluated for impairment	18,500		18,500		21,090
Total ending allowance balance	19,957	26,636	19,957	26,636
Loans
Ending Balance individually evaluated for impairment	24,226		24,226		33,499
Ending Balance collectively evaluated for impairment	721,536		721,536		696,554
Total ending loan balance excluding accrued interest	745,762		745,762		730,053
Residential
Allowance for loan losses
Balance at the beginning of the period	3,459	2,975	3,180	2,972
Provision charged to expense	288	840	1,659	2,549
Losses charged off	(448)	(1,078)	(1,767)	(2,910)
Recoveries	148	106	375	232
Balance at the end of the period	3,447	2,843	3,447	2,843
Allowance for loan losses
Ending Balance individually evaluated for impairment	106		106
Ending Balance collectively evaluated for impairment	3,341		3,341		3,180
Total ending allowance balance	3,447	2,843	3,447	2,843
Loans
Ending Balance individually evaluated for impairment	13,183		13,183		14,175
Ending Balance collectively evaluated for impairment	630,246		630,246		604,349
Total ending loan balance excluding accrued interest	643,429		643,429		618,524
Consumer
Allowance for loan losses
Balance at the beginning of the period	800	789	996	879
Provision charged to expense	658	473	1,203	1,068
Losses charged off	(864)	(962)	(2,364)	(2,468)
Recoveries	387	410	1,146	1,231
Balance at the end of the period	981	710	981	710
Allowance for loan losses
Ending Balance individually evaluated for impairment	2		2
Ending Balance collectively evaluated for impairment	979		979		996
Total ending allowance balance	981	710	981	710
Loans
Ending Balance individually evaluated for impairment	835		835		1,083
Ending Balance collectively evaluated for impairment	45,372		45,372		47,212
Total ending loan balance excluding accrued interest	$ 46,207		$ 46,207		$ 48,295