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Equity-based Compensation - Activity for options (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Number of Options
Beginning Balance (in shares)	5,640,438
Options granted (in shares)	212,450	55,639
Options exercised (in shares)	(348,552)	(20,787)
Options forfeited (in shares)	(396,362)
Ending Balance (in shares)	5,107,974		5,640,438
Exercisable (in shares)	3,044,481
Vested and expected to vest as of December 31, 2020	5,107,974
Weighted Average Exercise Price
Beginning Balance (in dollars per share)	$ 4.19
Options granted (in dollars per share)	3.05
Options exercised (in dollars per share)	0.87
Options forfeited (in dollars per share)	11.75
Ending Balance (in dollars per share)	4.28		$ 4.19
Exercisable (in dollars per share)	2.17
Vested and expected to vest (in dollars per share)	$ 4.28
Aggregate Intrinsic Value
Aggregate Intrinsic Value	$ 5,953		$ 12,002
Aggregate Intrinsic Value - Exercisable	4,845
Aggregate Intrinsic Value - Vested and expected to vest	$ 5,953
Weighted Average Remaining Contractual Life	8 years		8 years
Weighted Average Remaining Contractual Life -Exercisable	6 years 10 months 24 days
Weighted Average Remaining Contractual Life - Vested and expected to vest	8 years

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