ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Summary of components of accumulated other comprehensive (loss) income (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31	$ (10,115)		$ (14,246)
Change during the period:
Before-tax amount	(1)		(676)
Tax benefit (expense)	(1)		18
Reclassification adjustment, net of taxes:
Amortization of net loss	168	[1]	248	[1]
Total activity for the period	166		(410)
Balance at June 30	(9,949)		(14,656)
Pension Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31	(9,760)		(14,688)
Change during the period:
Before-tax amount
Tax benefit (expense)
Reclassification adjustment, net of taxes:
Amortization of net loss	168	[1]	248	[1]
Total activity for the period	168		248
Balance at June 30	(9,592)		(14,440)
Unrealized Gain (Loss) On Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31	10		29
Change during the period:
Before-tax amount	3		(49)
Tax benefit (expense)	(1)		18
Reclassification adjustment, net of taxes:
Amortization of net loss		[1]		[1]
Total activity for the period	2		(31)
Balance at June 30	12		(2)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31	(365)		413
Change during the period:
Before-tax amount	(4)		(627)
Tax benefit (expense)
Reclassification adjustment, net of taxes:
Amortization of net loss		[1]		[1]
Total activity for the period	(4)		(627)
Balance at June 30	$ (369)		$ (214)

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