Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Net loss before income taxes:
United States	$ (138,323)	$ (143,349)	$ (153,620)
Non-U.S.	64,106	(34,507)	(46,051)
Loss before income taxes	(74,217)	(177,856)	(199,671)
Current:
United States	0	(33)	(90)
Non-U.S.	593	5,278	0
Total	593	5,245	(90)
Deferred:
United States	0	0	0
Non-U.S.	0	0	0
Total	0	0	0
Provision for income taxes	$ 593	$ 5,245	$ (90)
Effective tax rate (in percentage)	(0.80%)	(2.95%)	0.05%