Share-based Compensation - Summary of Stock Option Activity (Detail) - 2021 Equity Incentive Plan - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
	Jun. 30, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of Shares, Beginning Balance	10,211,758
Granted	2,597,862
Exercised	(27,013)
Forfeiture	(578,985)
Outstanding at June 30, 2024	12,203,622
Vested and expected to vest at June 30, 2024	12,203,622
Exercisable at June 30, 2024	6,400,855
Weighted Average Exercise Price Per Share, Beginning Balance	$ 17.1
Granted	14.36
Exercised	13.76
Forfeiture	16.89
Weighted Average Exercise Price Per Share, Ending Balance	16.54
Weighted Average Exercise Price Per Share, Vested and expected to vest at June 30, 2024	16.54
Exercisable at June 30, 2024	$ 16.68
Weighted-Average Remaining Contractual Term, Outstanding at June 30, 2024	7 years 10 months 24 days
Weighted-Average Remaining Contractual Term, Vested and expected to vest at June 30, 2024	7 years 10 months 24 days
Weighted-Average Remaining Contractual Term, Exercisable at June 30, 2024	7 years 3 months 18 days
Exercised	$ 68
Outstanding at June 30, 2024 Aggregate Intrinsic Value	2,237
Vested and expected to vest at June 30, 2024, Aggregate Intrinsic Value	2,237
Exercisable at June 30, 2024	$ 1,011