Stock-Based Compensation - Summary of Stock Option Activity (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Options Outstanding
Outstanding, beginning of period (in shares)	7,684,778
Exercised (in shares)	(534,019)
Cancelled/Forfeited (in shares)	(1,642,827)
Outstanding, end of period (in shares)	5,507,932	7,684,778
Vested and exercisable (in shares)	2,061,512
Weighted-Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 12.91
Exercised (in shares)	1.63
Cancelled/Forfeited (in dollars per share)	19.33
Outstanding, end of period (in dollars per share)	12.09	$ 12.91
Vested and exercisable (in dollars per share)	$ 5.68
Weighted-Average Remaining Life (Years)
Outstanding	6 years 9 months 7 days	9 years 14 days
Vested and exercisable	7 years
Aggregate Intrinsic Value
Outstanding	$ 30,556	$ 188,722
Vested and exercisable	$ 15,548