Loss Per Share - Schedule of basic and diluted loss per share (Details) - USD ($) $ / shares in Units, $ 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	$ (23,213)	$ (8,427)	$ (9,688)	$ (32,278)	$ (50,712)	$ (34,618)	$ (41,328)	$ (117,608)
Weighted average shares outstanding
Basic (in shares)	60,114,358			50,160,080			59,989,457	23,059,068
Diluted (in shares)	60,114,358			50,160,080			59,989,457	23,059,068
Basic loss per common share (in dollars per share)	$ (0.39)			$ (0.64)			$ (0.69)	$ (5.10)
Diluted loss per common share (in dollars per share)	$ (0.39)			$ (0.64)			$ (0.69)	$ (5.10)