COMPREHENSIVE INCOME (LOSS) - Schedule of Comprehensive Loss Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Equity [Abstract]
Net income	$ 11,648	$ 8,384
Foreign currency translation adjustment	11,244	(24,393)
Change in unrealized gain on derivatives, net of tax	0	211
Pension liability adjustment, net of tax	(7)	54
Comprehensive income (loss)	$ 22,885	$ (15,744)