Stock-Based Compensation - Summary of Stock Option Activity (Detail) $ / shares in Units, $ in Thousands		9 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares	Sep. 30, 2024 USD ($) $ / shares shares
Share-Based Payment Arrangement [Abstract]
Number of Options, Outstanding, Beginning Balance | shares		5,458,999
Number of options, Granted | shares		918,161
Number of options, Exercised | shares		(371,736)
Number of options, Forfeited | shares		(526,473)
Number of Options, Outstanding, Ending Balance | shares	5,458,999	5,478,951
Number of Options, Exercisable | shares		4,096,828
Weighted Average Exercise Price per Share, Outstanding, Beginning Balance | $ / shares		$ 50.38
Weighted Average Exercise Price per Share, Granted | $ / shares		30.72
Weighted Average Exercise Price per Share, Exercised | $ / shares		15.69
Weighted Average Exercise Price per Share, Forfeited | $ / shares		71.23
Weighted Average Exercise Price per Share, Outstanding, Ending Balance | $ / shares	$ 50.38	47.43
Weighted Average Exercise Price per Share, Exercisable | $ / shares		$ 47.42
Weighted Average Remaining Contractual Term, Outstanding	6 years 7 months 24 days	6 years 6 months 7 days
Weighted Average Remaining Contractual Term, Exercisable		5 years 9 months 3 days
Aggregate Intrinsic Value, Outstanding | $	$ 35,922	$ 11,250
Aggregate Intrinsic Value, Exercisable | $		$ 11,250