Share-based Compensation - Additional Information (Detail) - USD ($)	1 Months Ended	3 Months Ended		6 Months Ended
	May 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	May 23, 2023
Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, shares		592,000		592,000		1,294,000
Stock options vested				138,465
Aggregate fair value of stock option vested				$ 37,500,000
Weighted average grant date fair value of stock option awards				$ 1,112.28	$ 190.86
Share-based compensation expense recognized		$ 10,300,000	$ 10,500,000	$ 20,100,000	$ 23,400,000
Unrecognized share-based compensation expense		56,800,000		$ 56,800,000
Unrecognized compensation expense expected to be recognized				1 year 10 months 24 days
Share-settled Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of stock option vested				$ 11,700,000	5,100,000
Share-based compensation expense recognized		$ 7,400,000	3,900,000	$ 12,100,000	$ 7,300,000
Unrecognized compensation expense expected to be recognized				3 years 1 month 6 days
Restricted stock units outstanding		163,868		163,868		185,000
Share-settled restricted stock units vested				37,458	12,847
Number of shares withheld to satisfy tax obligations				2,506	2,792
Shares issued				34,952	10,055
Granted, weighted average grant date fair value (in dollars per share)				$ 1,452.21	$ 277.59
Unrecognized share-based compensation expense		$ 77,500,000		$ 77,500,000
Share-settled Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate fair value of stock option vested				$ 0	$ 0
Unrecognized compensation expense expected to be recognized				2 years 6 months
Restricted stock units outstanding		30,000		30,000		25,000
Unrecognized share-based compensation expense		$ 23,400,000		$ 23,400,000
Class A | Stock Option Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding, shares		591,555		591,555
2013 Equity Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Equity compensation plan expiration period	2023-05
2013 Equity Plan | Other Stock Based Awards and Cash Settled RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense recognized		$ 100,000	400,000	$ 1,900,000	$ 1,100,000
Unrecognized compensation expense expected to be recognized				7 months 6 days
Unrecognized share-based compensation expense		400,000		$ 400,000
2023 Equity Plan | Share-settled Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant date fair value of stock option awards				$ 3,071.27	$ 486.18
Share-based compensation expense recognized		$ 2,400,000	300,000	$ 3,500,000	$ 300,000
Restricted stock units outstanding		30,285		30,285
2023 Equity Plan | Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, stock authorized							1,932,703
Shares of class A common stock reserved and available for future issuance		232,574		232,574
2021 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense recognized		$ 400,000	$ 400,000	$ 800,000	$ 1,000,000.0
Unrecognized compensation expense expected to be recognized				2 months 12 days
Unrecognized share-based compensation expense		$ 300,000		$ 300,000
2021 Employee Stock Purchase Plan | Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, stock authorized		100,000		100,000
Shares of class A common stock reserved and available for future issuance		52,675		52,675
Common stock, shares issued				6,932