ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (10,869)	[1]
Other comprehensive income before reclassifications	62
Amounts reclassified from AOCL	8	[2]
Other Comprehensive Gain (Loss) - Net of Tax	70	[1]	(267)	[1]
Ending balance	(10,799)	[1]
Combined statutory tax rate	41.00%		41.00%
Postretirement Liability Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(10,672)	[1]
Other comprehensive income before reclassifications	0
Amounts reclassified from AOCL	0	[2]
Other Comprehensive Gain (Loss) - Net of Tax	0
Ending balance	(10,672)	[1]
Unrealized Gain (Loss) on Derivatives-Other [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(594)	[1]
Other comprehensive income before reclassifications	0
Amounts reclassified from AOCL	8	[2]
Other Comprehensive Gain (Loss) - Net of Tax	8
Ending balance	(586)	[1]
Unrealized Gain (Loss) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	397	[1]
Other comprehensive income before reclassifications	62
Amounts reclassified from AOCL	0	[2]
Other Comprehensive Gain (Loss) - Net of Tax	62
Ending balance	$ 459	[1]

[1] Determined using a combined statutory tax rate of 41% .

[2] See table below.