SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Securities sold under agreements to repurchase
Securities sold under agreements to repurchase	$ 12,390,000	$ 16,897,000	$ 16,400,000
Carrying amount of U.S. GSE, mortgage-backed securities and collateralized mortgage obligations that serve as securities under repurchase agreements	17,100,000	23,300,000	22,300,000
First quarter of 2013
Securities sold under agreements to repurchase
Securities sold under agreements to repurchase	2,400,000
First quarter of 2015
Securities sold under agreements to repurchase
Securities sold under agreements to repurchase	10,000,000
Securities sold under agreements to repurchase
Securities sold under agreements to repurchase
Average daily balance during the year	13,016,000	16,715,000	16,648,000
Average interest rate during the year (as a percent)	3.01%	3.23%	3.10%
Maximum month-end balance during the year	$ 16,722,000	$ 17,469,000	$ 17,192,000
Weighted average interest rate at year-end (as a percent)	2.99%	3.18%	3.21%