Share-based Compensation - Share 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 Shares
Granted (in shares)	1,111,569
Exercised (in shares)	(376,158)
Forfeited (in shares)	(91,802)
Outstanding, ending balance (in shares)	4,559,112
Exercisable (in shares)	1,992,397
Unvested (in shares)	2,566,715
Weighted Average Exercise Price
Outstanding, beginning balance (in dollars per share)	$ 13.53
Granted (in dollars per share)	14.81
Exercised (in dollars per share)	1.00
Forfeited (in dollars per share)	13.40
Outstanding, ending balance (in dollars per share)	14.59		$ 13.53
Exercisable (in dollars per share)	4.86
Unvested (in dollars per share)	$ 21.57
Weighted Average Remaining Contractual Term (Years)
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	8 years 9 months 14 days		8 years 7 months 20 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	8 years 9 months 14 days		8 years 7 months 20 days
Exercisable (in years)	8 years 1 month 9 days
Unvested (in years)	9 years 3 months 25 days
Outstanding, aggregate intrinsic value, beginning balance	$ 51,162
Outstanding, aggregate intrinsic value, ending balance	24,245		$ 51,162
Exercisable	20,495
Unvested	3,750
Aggregate intrinsic value of options exercised during the period	$ 4,900	$ 26,100
Granted (in dollars per share)	$ 11.38	$ 26.73
Unrecognized compensation cost of options	$ 35,200	$ 21,600
Share options
Weighted Average Remaining Contractual Term (Years)
Period for recognition (in years)	3 years 2 months 4 days	3 years 4 months 13 days
Share options | Ordinary shares
Number of Shares
Outstanding, beginning balance (in shares)	3,915,503
Outstanding, ending balance (in shares)			3,915,503