DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details Textual) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2013	Jun. 30, 2009	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Interest Rate Caps Purchased		$ 7,100,000
Derivative Cap Fixed Interest Rate		2.97%
Deposits, Money Market Deposits		70,000,000
Derivative Asset, Fair Value, Net			14,000	250,000
Interest Expense, Hedged Deposits			2,000,000	1,300,000	429,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, before Tax			(1,801,000)	460,000	3,717,000
Hedged Deposits			90,000,000
Expected Reduction in Hedged Deposits	50,000,000
Loss on Cash Flow Hedge Ineffectiveness			1,339,000	0	0
Future Interest Expenses on Hedge Deposits			1,500,000
Future Interest Expenses on Hedge Terminated			900,000
Accounts Payable, Interest-bearing			$ 428,000	$ 428,000