ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Summary of components of accumulated other comprehensive (loss) income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013		Jun. 30, 2012
Pension Adjustment
Balance			$ (14,688)		$ (12,981)
Change during the period:
Before-tax amount
Tax (expense) benefit
Reclassification adjustment, net of taxes:
Amortization of net loss			248	[1]	212	[1]
Total activity for the period	124	106	248		212
Balance	(14,440)	(12,769)	(14,440)		(12,769)
Unrealized Gain (Loss) On Securities
Balance			29		187
Change during the period:
Before-tax amount			(49)		(191)
Tax (expense) benefit			18		70
Reclassification adjustment, net of taxes:
Amortization of net loss				[1]		[1]
Total activity for the period	30	(116)	(31)		(121)
Balance	(2)	66	(2)		66
Foreign Currency Translation
Balance			413		148
Change during the period:
Before-tax amount			(627)		(28)
Tax (expense) benefit					10
Reclassification adjustment, net of taxes:
Amortization of net loss				[1]		[1]
Total activity for the period	(383)	(119)	(627)		(18)
Balance	(214)	130	(214)		130
Total
Balance			(14,246)		(12,646)
Change during the period:
Before-tax amount			(676)		(209)
Tax (expense) benefit			18		70
Reclassification adjustment, net of taxes:
Amortization of net loss			248		212
Total activity for the period			(410)		73
Balance	$ (14,656)	$ (12,573)	$ (14,656)		$ (12,573)

[1] Reported as part of selling, general and administrative expenses.