Stock-Based Compensation - Schedule of Stock Option Activity (Details) - 2021 Plan and 2017 Plan - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Stock Based Compensation Details [Line Items]
Options opening balance	24,064,586
Options Granted	120,727
Options Exercised	(10,255)
Options Forfeited	(175,852)
Options ending balance	23,999,206	24,064,586
Options, Vested and expected to vest	23,999,206
Options, Exercisable	20,203,497
Weighted average exercise price, beginning balance	$ 4.23
Weighted average exercise price, Granted	5.08
Weighted average exercise price, Exercised	3.74
Weighted average exercise price, Forfeited	6.89
Weighted average exercise price, ending balance	4.22	$ 4.23
Weighted average exercise price, Vested and expected to vest	4.22
Weighted average exercise price, Exercisable	$ 3.55
Weighted average contract life	8 years 7 months 2 days	7 years 4 months 24 days
Weighted average contract life, Vested and expected to vest	8 years 7 months 2 days
Weighted average contract life, Exercisable	8 years 6 months 18 days
Aggregate Intrinsic Value ending balance	$ 117,847	$ 56,525
Aggregate Intrinsic Value, Vested and expected to vest	117,847
Aggregate Intrinsic Value, Exercisable	$ 111,059