Net Loss Per Share - Computation of Net Loss Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Numerator:
Net loss	$ (28,071)	$ (33,155)
Denominator:
Weighted average common shares outstanding - basic	130,934,795	97,179,241
Weighted average common shares outstanding - diluted	130,934,795	97,179,241
Net loss per common share - basic (in dollars per share)	$ (0.21)	$ (0.34)
Net loss per common share - diluted (in dollars per share)	$ (0.21)	$ (0.34)