DERIVATIVE FINANCIAL INSTRUMENTS AND BALANCE SHEET OFFSETTING (Details 2) (USD $)	3 Months Ended					3 Months Ended
	Mar. 31, 2013 Receive-fixed, Pay-variable Interest Rate Swaps item	Mar. 31, 2012 Receive-fixed, Pay-variable Interest Rate Swaps	Mar. 31, 2013 Equity swap agreements	Dec. 31, 2012 Equity swap agreements item	Dec. 31, 2007 Equity swap agreements item	Mar. 31, 2013 Foreign exchange options	Dec. 31, 2012 Foreign exchange options
Derivative
Number of instruments entered into during the period	2			2	2
Number of hedged certificates of deposit	2
Notional amount of each individual derivative entered into during the period	$ 20,000,000
Amount of each individual certificate of deposit hedged by a derivative	20,000,000
Term of contract			5 years			5 years
Net reduction recognized in expense related to hedge ineffectiveness	87,000	848,000
Net reduction to interest expense related to net settlements of derivatives	385,000	1,500,000
Collateral delivered by the entity in the form of securities to counterparty institutions						$ 689,000	$ 940,000