ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2014		Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (10,799)	[1]			$ (10,869)	[2]
Other comprehensive income before reclassifications	154				216
Amounts reclassified from AOCL	7	[3]			15	[3]
Other Comprehensive Gain (Loss) - Net of Tax	161	[1]	(16)	[1]	231	[1]	(283)	[1]
Ending balance	(10,638)	[1],[2]			(10,638)	[1],[2]
Combined statutory tax rate	41.00%		41.00%		41.00%		41.00%
Postretirement Liability Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(10,672)	[1]			(10,672)	[2]
Other comprehensive income before reclassifications	0				0
Amounts reclassified from AOCL	0	[3]			0	[3]
Other Comprehensive Gain (Loss) - Net of Tax	0				0
Ending balance	(10,672)	[1],[2]			(10,672)	[1],[2]
Unrealized Gain (Loss) on Derivatives-Other [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(586)	[1]			(594)	[2]
Other comprehensive income before reclassifications	0				0
Amounts reclassified from AOCL	7	[3]			15	[3]
Other Comprehensive Gain (Loss) - Net of Tax	7				15
Ending balance	(579)	[1],[2]			(579)	[1],[2]
Unrealized Gain (Loss) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	459	[1]			397	[2]
Other comprehensive income before reclassifications	154				216
Amounts reclassified from AOCL	0	[3]			0	[3]
Other Comprehensive Gain (Loss) - Net of Tax	154				216
Ending balance	$ 613	[1],[2]			$ 613	[1],[2]

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

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

[3] See table below.