LOANS AND ALLOWANCE FOR CREDIT LOSSES (Details 8) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Beginning balance	$ 33,900	$ 39,231	$ 35,983	$ 41,067
Provision for credit losses	(593)	1,132	(996)	6,634
Losses charged to the allowance	(1,316)	(3,944)	(5,330)	(12,218)
Recoveries credited to the allowance	297	597	2,631	1,533
Ending balance	32,288	37,016	32,288	37,016
Loans valued for impairment:
Individually	48,247	66,431	48,247	66,431
Collectively	1,442,520	1,437,193	1,442,520	1,437,193
Total	1,490,767	1,503,624	1,490,767	1,503,624	1,501,301
Unallocated Financing Receivables [Member]
Beginning balance	3,885	5,420	4,386	6,161
Provision for credit losses	(86)	(732)	(587)	(1,473)
Losses charged to the allowance	0	0	0	0
Recoveries credited to the allowance	0	0	0	0
Ending balance	3,799	4,688	3,799	4,688
Loans valued for impairment:
Individually	0	0	0	0
Collectively	0	0	0	0
Total	0	0	0	0
Construction Loans [Member]
Beginning balance	2,466	2,395	2,490	4,474
Provision for credit losses	8	93	(44)	(749)
Losses charged to the allowance	(150)	(567)	(152)	(1,810)
Recoveries credited to the allowance	6	182	36	188
Ending balance	2,330	2,103	2,330	2,103
Loans valued for impairment:
Individually	5,296	7,238	5,296	7,238
Collectively	42,110	18,788	42,110	18,788
Total	47,406	26,026	47,406	26,026	30,162
Commercial Loan [Member]
Beginning balance	6,701	7,858	7,746	8,541
Provision for credit losses	(378)	974	(1,204)	875
Losses charged to the allowance	(203)	(1,462)	(1,217)	(2,683)
Recoveries credited to the allowance	101	281	896	918
Ending balance	6,221	7,651	6,221	7,651
Loans valued for impairment:
Individually	7,108	10,144	7,108	10,144
Collectively	279,026	286,191	279,026	286,191
Total	286,134	296,335	286,134	296,335	299,766
Mortgage Loans On Real Estate [Member]
Beginning balance	8,642	8,740	8,461	8,156
Provision for credit losses	106	667	1,790	5,137
Losses charged to the allowance	(584)	(804)	(2,298)	(4,821)
Recoveries credited to the allowance	110	42	321	173
Ending balance	8,274	8,645	8,274	8,645
Loans valued for impairment:
Individually	13,827	21,616	13,827	21,616
Collectively	287,404	309,174	287,404	309,174
Total	301,231	330,790	301,231	330,790	324,994
Commercial Real Estate [Member]
Beginning balance	11,275	13,834	11,833	12,462
Provision for credit losses	(311)	(242)	(1,407)	2,017
Losses charged to the allowance	(149)	(800)	(761)	(1,693)
Recoveries credited to the allowance	23	21	1,173	27
Ending balance	10,838	12,813	10,838	12,813
Loans valued for impairment:
Individually	21,933	27,290	21,933	27,290
Collectively	821,903	809,462	821,903	809,462
Total	843,836	836,752	843,836	836,752	832,767
Consumer Loan [Member]
Beginning balance	931	984	1,067	1,273
Provision for credit losses	68	372	456	827
Losses charged to the allowance	(230)	(311)	(902)	(1,211)
Recoveries credited to the allowance	57	71	205	227
Ending balance	826	1,116	826	1,116
Loans valued for impairment:
Individually	83	143	83	143
Collectively	12,077	13,578	12,077	13,578
Total	$ 12,160	$ 13,721	$ 12,160	$ 13,721	$ 13,612