Share-based Compensation - Summary of Stock Option Activity (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2022 $ / shares shares	Dec. 31, 2021 $ / shares shares
Number of Shares
Beginning balance (in shares)	11,730,382
Granted (in shares)	4,914,785
Exercised (in shares)	(150,588)
Forfeited (in shares)	(1,548,912)
Ending balance (in shares)	14,945,667	11,730,382
Exercisable at end of period (in shares)	4,551,327
Vested and expected to vest at end of period (in shares)	14,945,667
Weighted-Average Exercise Price Per Share
Beginning balance (in dollars per share) | $ / shares	$ 8.07
Granted (in dollars per share) | $ / shares	8.42
Exercised (in dollars per share) | $ / shares	4.57
Forfeited (in dollars per share) | $ / shares	10.48
Ending balance (in dollars per share) | $ / shares	7.92	$ 8.07
Exercisable at end of period (in dollars per share) | $ / shares	$ 7.17
Weighted-Average Remaining Contractual Term
Options outstanding, weighted-average remaining contractual term	8 years 4 months 24 days	9 years 2 months 12 days
Options exercisable, weighted-average remaining contractual term	7 years 4 months 24 days