Net Loss Per Share - Summary of Calculation of Diluted Shares Outstanding (Details) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Potentially dilutive shares not included in calculation of diluted shares outstanding	17,088,414	7,485,228	93,497,146
Redeemable Convertible Preferred Stock
Potentially dilutive shares not included in calculation of diluted shares outstanding			83,568,628
Warrants
Potentially dilutive shares not included in calculation of diluted shares outstanding			161,136
Stock Options
Potentially dilutive shares not included in calculation of diluted shares outstanding	4,076,542	5,617,568	6,110,000
Restricted Stock Units
Potentially dilutive shares not included in calculation of diluted shares outstanding	1,853,150	1,867,660	408,000
Restricted Stock Awards
Potentially dilutive shares not included in calculation of diluted shares outstanding			3,249,382
Convertible Senior Notes
Potentially dilutive shares not included in calculation of diluted shares outstanding	11,158,722