Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 23,511	$ (4,629)
Other comprehensive income (loss) - net of tax:
Adjustment to accrued pension liability	414	524
Change in unrealized net (loss) gain on foreign currency	(25,547)	1,221
Unrealized loss on designated derivatives	(4,039)	(2,714)
Other comprehensive loss	(29,172)	(969)
Total comprehensive loss	$ (5,661)	$ (5,598)