Net Income Loss Per Share - Summary of Calculation of Basic and Diluted Net Loss Per Share of Common Stock (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net loss	$ (83,263)	$ 18,683	$ (180,617)	$ (51,452)	$ (87,808)	$ (32,875)	$ (245,197)	$ (172,135)
Weighted-average number of common shares - basic and diluted	181,827			13,680			160,515	12,249
Net loss per common share - basic and diluted	$ (0.46)			$ (3.76)			$ (1.53)	$ (14.05)