ACCUMULATED OTHER COMPREHENSIVE (LOSS) INCOME - Summary of components of accumulated other comprehensive (loss) income (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31	$ (10,115)		$ (14,246)
Change during the period:
Before-tax amount	(710)		(416)
Tax benefit	21		1
Reclassification adjustment, net of taxes:
Amortization of net loss	253	[1]	372
Total activity for the period	(436)		(43)
Balance at September 30	(10,551)		(14,289)
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
Reclassification adjustment, net of taxes:
Amortization of net loss	253	[1]	372
Total activity for the period	253		372
Balance at September 30	(9,507)		(14,316)
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	(57)		(3)
Tax benefit	21		1
Reclassification adjustment, net of taxes:
Amortization of net loss		[1]
Total activity for the period	(36)		(2)
Balance at September 30	(26)		27
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at December 31	(365)		413
Change during the period:
Before-tax amount	(653)		(413)
Tax benefit
Reclassification adjustment, net of taxes:
Amortization of net loss		[1]
Total activity for the period	(653)		(413)
Balance at September 30	$ (1,018)

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