Stock-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Share-Based Payment Arrangement [Abstract]
Options outstanding beginning balance, Shares Subject to Stock Options	5,248,682
Granted, Shares Subject to Stock Options	1,197,200
Exercised, Shares Subject to Stock Options	(1,568,990)
Forfeited, Shares Subject to Stock Options	(12,250)
Cancelled, Shares Subject to Stock Options	0
Options outstanding ending balance, Shares Subject to Stock Options	4,864,642	5,248,682
Options exercisable, Shares Subject to Stock Options	1,983,233
Options outstanding beginning balance, Weighted-Average Exercise Price	$ 6.79
Granted, Weighted-Average Exercise Price	22.39
Exercised, Weighted-Average Exercise Price	6
Forfeited, Weighted-Average Exercise Price	9.93
Cancelled, Weighted-Average Exercise Price	0
Options outstanding ending balance, Weighted-Average Exercise Price	10.87	$ 6.79
Options exercisable, Weighted-Average Exercise Price	$ 7.64
Options outstanding, Weighted-Average Remaining Contractual Term	7 years 6 months 3 days	7 years 1 month 6 days
Options exercisable, Weighted-Average Remaining Contractual Term	6 years 2 months 4 days
Options outstanding, Aggregate Intrinsic Value	$ 255,374,000	$ 62,210,000
Options exercisable, Aggregate Intrinsic Value	$ 110,485,000