Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (148,761)	$ (166,938)	$ (495,761)	$ (375,014)
Other comprehensive loss, before tax:
Unrealized gain (loss) on available-for-sale investments	4	66	(6,451)	(563)
Foreign currency translation loss	(2,429)	0	(3,176)	0
Comprehensive loss, before tax	(151,186)	(166,872)	(505,388)	(375,577)
Income tax benefit related to items of other comprehensive loss	0	0	0	170
Comprehensive loss, net of tax	$ (151,186)	$ (166,872)	$ (505,388)	$ (375,407)