LOANS AND ALLOWANCE (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Allowance for loan losses
Balance at the beginning of the period	$ 32,227	$ 39,889
Provision charged to expense	1,734	3,100
Losses charged off	(2,996)	(5,921)
Recoveries	763	1,473
Balance at the end of the period	31,728	38,541
Allowance for loan losses
Ending Balance individually evaluated for impairment	3,621		3,217
Ending Balance collectively evaluated for impairment	28,107		29,010
Total ending allowance balance	31,728	38,541
Loans
Ending Balance individually evaluated for impairment	49,966		50,554
Ending Balance collectively evaluated for impairment	1,503,354		1,502,829
Total ending loan balance excluding accrued interest	1,553,320		1,553,383
Accrued interest	5,230		5,206
Commercial
Allowance for loan losses
Balance at the beginning of the period	3,894	5,562
Provision charged to expense	525	(218)
Losses charged off	(271)	(180)
Recoveries	131	167
Balance at the end of the period	4,279	5,331
Allowance for loan losses
Ending Balance individually evaluated for impairment	355		150
Ending Balance collectively evaluated for impairment	3,924		3,744
Total ending allowance balance	4,279	5,331
Loans
Ending Balance individually evaluated for impairment	1,384		1,797
Ending Balance collectively evaluated for impairment	153,602		154,714
Total ending loan balance excluding accrued interest	154,986		156,511
Commercial Real Estate
Allowance for loan losses
Balance at the beginning of the period	24,157	30,476
Provision charged to expense	238	2,893
Losses charged off	(1,208)	(3,908)
Recoveries	51	779
Balance at the end of the period	23,238	30,240
Allowance for loan losses
Ending Balance individually evaluated for impairment	3,143		3,067
Ending Balance collectively evaluated for impairment	20,095		21,090
Total ending allowance balance	23,238	30,240
Loans
Ending Balance individually evaluated for impairment	34,518		33,499
Ending Balance collectively evaluated for impairment	693,847		696,554
Total ending loan balance excluding accrued interest	728,365		730,053
Residential
Allowance for loan losses
Balance at the beginning of the period	3,180	2,972
Provision charged to expense	631	182
Losses charged off	(698)	(1,214)
Recoveries	150	72
Balance at the end of the period	3,263	2,012
Allowance for loan losses
Ending Balance individually evaluated for impairment	121
Ending Balance collectively evaluated for impairment	3,142		3,180
Total ending allowance balance	3,263	2,012
Loans
Ending Balance individually evaluated for impairment	13,137		14,175
Ending Balance collectively evaluated for impairment	612,861		604,349
Total ending loan balance excluding accrued interest	625,998		618,524
Consumer
Allowance for loan losses
Balance at the beginning of the period	996	879
Provision charged to expense	340	243
Losses charged off	(819)	(619)
Recoveries	431	455
Balance at the end of the period	948	958
Allowance for loan losses
Ending Balance individually evaluated for impairment	2
Ending Balance collectively evaluated for impairment	946		996
Total ending allowance balance	948	958
Loans
Ending Balance individually evaluated for impairment	927		1,083
Ending Balance collectively evaluated for impairment	43,044		47,212
Total ending loan balance excluding accrued interest	$ 43,971		$ 48,295