Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Consolidated Statements of Comprehensive Loss
Net loss	$ (39,200)	$ (12,670)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	100	920
Unrealized pension actuarial gains (losses), net of tax	(157)	504
Total other comprehensive loss, net of tax	$ (39,257)	$ (11,246)