SECURITIES SOLD UNDER REPURCHASE AGREEMENTS (Details) (USD $)	0 Months Ended	3 Months Ended		3 Months Ended	12 Months Ended
	Nov. 14, 2007	Mar. 31, 2013 item	Dec. 31, 2012	Mar. 31, 2013 Securities sold under repurchase agreements	Dec. 31, 2012 Securities sold under repurchase agreements
SECURITIES SOLD UNDER REPURCHASE AGREEMENTS
Number of obligations to repurchase securities sold		1
Amount borrowed under repurchase agreement	$ 10,000,000	$ 10,000,000
Term of repurchase agreement	9 years
Fixed rate at which the Bank borrowed funds under repurchase agreement (as a percent)	4.40%
Securities sold under repurchase agreements summary
Book values of securities used as collateral for the agreements		14,539,908	14,321,961	12,719,908	12,421,961
Fair values of securities used as collateral for the agreements		14,478,871	14,360,697	12,650,450	12,450,185
Amount outstanding at period end		10,000,000	10,000,000	10,000,000	10,000,000
Average amount outstanding during the period				10,000,000	17,218,122
Maximum outstanding at any month-end				$ 10,000,000	$ 20,000,000
Weighted average rate paid at period-end (as a percent)				4.40%	4.40%
Weighted average rate paid during the period (as a percent)				4.46%	4.29%