Consolidated Statements of Comprehensive Income/(Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Consolidated net loss	$ (503,480)	$ (257,691)	$ (71,114)
Other comprehensive income/(loss):
Foreign currency translation adjustments	(55)	168	12
Net change in unrealized gains (losses) on available-for-sale marketable securities, net of tax	0	(33)	41
Other comprehensive income/(loss), net of tax	(55)	135	53
Total comprehensive loss including noncontrolling interests	(503,535)	(257,556)	(71,061)
Less: net loss attributable to noncontrolling interests	(11,829)	(4,437)	(146)
Less: cumulative translation adjustments attributable to noncontrolling interests	(27)	84	6
Total comprehensive loss attributable to noncontrolling interests	(11,856)	(4,353)	(140)
Total comprehensive loss attributable to common stockholders	$ (491,679)	$ (253,203)	$ (70,921)