CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (52,966)	$ (54,153)	$ (30,240)
Other comprehensive (loss) income:
Foreign currency translation adjustments	1,512	(1,185)	(19,340)
Gain (loss) on hedging activity, net of tax of ($21), $20 and $944, respectively	(74)	74
Gain (loss) on hedging activity, net of tax of ($21), $20 and $944, respectively			3,553
Recognition of gain on hedging activity reclassified to net (loss) income, net of tax ($456), ($314) and ($75), respectively	(1,802)	(1,112)
Recognition of gain on hedging activity reclassified to net (loss) income, net of tax ($456), ($314) and ($75), respectively			(281)
Pension and other postretirement benefit plans adjustment, net of tax of ($129), $0 and $0, respectively	(243)	0	0
Comprehensive loss, net of tax	$ (53,573)	$ (56,376)	$ (46,308)