Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (180,617)	$ (32,875)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on marketable securities, net	26	(10)
Total comprehensive loss	$ (180,591)	$ (32,885)