DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Details 2) (Interest Rate Swap, USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Derivative instruments and hedging activities
Liability position related to credit-risk-related contingent features	$ 5,700,000		$ 5,700,000
Termination value of derivatives with credit-risk-related contingent features	5,700,000		5,700,000
Derivative in Cash Flow Hedging Relationships
Derivative instruments and hedging activities
Amount of Gain or (Loss) Recognized in Other Comprehensive Income on Derivative (Effective Portion)	4,373,000	(144,000)	5,441,000	301,000
Amount of Gain or (Loss) Reclassified from Accumulated Other Comprehensive Income into Income (Effective Portion)	$ 1,039,000	$ 1,033,000	$ (2,072,000)	$ (2,056,000)