COMPREHENSIVE INCOME (LOSS) - Schedule of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Equity [Abstract]
Net income (loss)	$ (369)	$ 9,180	$ 29,736	$ 32,756	$ 8,811	$ 62,492
Foreign currency translation adjustment	10,433		7,700		3,620	690
Change in unrealized loss on derivatives, net of tax	(8,830)		(19,703)		(30,136)	(23,937)
Pension liability adjustment, net of tax	(139)		(19)		(207)	(10)
Comprehensive income (loss), net	$ 1,095		$ 17,714		$ (17,912)	$ 39,235