Net Loss Per Common Share - Schedule of Calculation of Basic and Diluted Net Loss Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Earnings Per Share [Abstract]
Net loss	$ (51,187)	$ (15,042)	$ (124,137)	$ (41,693)
Weighted average common shares outstanding, basic and diluted	38,003,954	11,733,170	37,495,537	11,176,429
Net loss per common share, basic and diluted	$ (1.35)	$ (1.28)	$ (3.31)	$ (3.73)