OTHER COMPREHENSIVE LOSS (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	$ (7,434)	$ (4,526)	$ (4,486)
Total other comprehensive income (loss)	5,302	(2,908)	(40)
Ending Balance	(2,132)	(7,434)	(4,526)
Unrealized Gain on Securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(2,023)	5,478	6,574
Total other comprehensive income (loss)	5,412	(7,501)	(1,096)
Ending Balance	3,389	(2,023)	5,478
Unrealized Loss on Cash Flow Hedge
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(5,698)	(9,577)	(10,804)
Total other comprehensive income (loss)	2,400	3,879	1,227
Ending Balance	(3,298)	(5,698)	(9,577)
Deferred Gain on Hedge Transactions
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	715	859	1,004
Total other comprehensive income (loss)	(144)	(144)	(145)
Ending Balance	571	715	859
Defined Benefit Postretirement Plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning Balance	(428)	(1,286)	(1,260)
Total other comprehensive income (loss)	(2,366)	858	(26)
Ending Balance	$ (2,794)	$ (428)	$ (1,286)