Net 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	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Earnings Per Share [Abstract]
Net loss	$ (355,928)	$ (285,305)	$ (130,778)
Weighted-average number of common shares - basic and diluted	166,433	13,014	4,903
Net loss per common share - basic and diluted	$ (2.14)	$ (21.92)	$ (26.68)