Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Condensed Consolidated Statements of Comprehensive Loss
Net loss	$ (79,199)	$ (19,367)	$ (136,155)	$ (58,567)
Other comprehensive income (loss), net of tax
Foreign currency translation adjustments	1,133	(1,444)	2,610	(1,344)
Unrealized pension actuarial gains (losses), net of tax	802	(85)	1,110	(242)
Total other comprehensive loss, net of tax	$ (77,264)	$ (20,896)	$ (132,435)	$ (60,153)