LOANS - Credit quality segments of loans receivable and allowance for loan losses (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Collectively evaluated, Loans
Performing loans	$ 382,423	$ 364,594
Potential problem loans	9,856	8,345
Impaired loans
Unallocated allowance
Totals	392,279	372,939
Collectively evaluated, Allowance
Performing loans	2,687	2,567
Potential problem loans	335	246
Impaired loans
Unallocated allowance
Totals	3,022	2,813
Individually evaluated, Loans
Performing loans	77	121
Potential problem loans	2,558	2,465
Impaired loans	14,962	16,562
Unallocated allowance
Totals	17,597	19,148
Individually evaluated, Allowance
Performing loans	30	52
Potential problem loans	86	131
Impaired loans	1,127	924
Unallocated allowance
Totals	1,243	1,107
Total portfolio, Loans
Performing loans	382,500	364,713
Potential problem loans	12,414	10,810
Impaired loans	14,962	16,563
Unallocated allowance
Totals	409,876	392,086
Total portfolio, Allowance
Performing loans	2,717	2,619
Potential problem loans	421	377
Impaired loans	1,127	924
Unallocated allowance	421	440
Totals	$ 4,686	$ 4,360