ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (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
Changes in accumulated other comprehensive loss components
Balance at the beginning of the period			$ (24,880)
Total other comprehensive income (loss), net of tax	(3,773)	(5,156)	(5,342)	(2,510)
Balance at the end of the period	(30,222)		(30,222)
Foreign Currency Translation Adjustment
Changes in accumulated other comprehensive loss components
Balance at the beginning of the period			21,078
Other comprehensive income (loss) before reclassifications			(7,211)
Total other comprehensive income (loss), net of tax			(7,211)
Balance at the end of the period	13,867		13,867
Pension and Other Post Retirment Liability Adjustment
Changes in accumulated other comprehensive loss components
Balance at the beginning of the period			(45,958)
Other comprehensive income (loss) before reclassifications			43
Amounts reclassified from accumulated other comprehensive income (loss)			1,826
Total other comprehensive income (loss), net of tax			1,869
Balance at the end of the period	(44,089)		(44,089)
Change in the fair value of interest rate swap contracts
Changes in accumulated other comprehensive loss components
Balance at the beginning of the period			(24,880)
Other comprehensive income (loss) before reclassifications			(7,168)
Amounts reclassified from accumulated other comprehensive income (loss)			1,826
Total other comprehensive income (loss), net of tax			(5,342)
Balance at the end of the period	$ (30,222)		$ (30,222)