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Stock-Based Compensation - Additional Information (Detail) - USD ($)		12 Months Ended
	Jul. 28, 2021	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Weighted average grant-date fair value of stock options granted		$ 51.94	$ 53.07	$ 23.01
Stock-based compensation expense		$ 86,502,000	$ 60,579,000	$ 25,563,000
Aggregate intrinsic value of stock options exercised		$ 107,600,000	$ 102,300,000	$ 52,300,000
2021 Stock Option and Incentive Plan [Member] | Common Class A [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares available for future issuance		8,244,716
2021 Employee Stock Purchase Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares available for future issuance		2,322,110
Excluding PSUs [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation cost related to common stock options		$ 170,400,000
Share based payment weighted average period		2 years 3 months 18 days
PSUs [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation cost related to common stock options		$ 11,100,000
Stock-based compensation expense		$ 0
Number of shares, outstanding		141,935
RSUs
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of shares, outstanding		1,091,116	716,921
Total fair value of RSUs vested		$ 19,000,000
Number of Shares, Vested		(252,814)	0	0
Maximum [Member] | 2021 Stock Option and Incentive Plan [Member] | Common Class A [Member] | Class A And Class B Common Stock Outstanding [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Share based compensation arrangement by share based payment award annual increase percentage	5.00%

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The automatic increase in the number of shares that may be issued under a share-based payment arrangement on the first day of each fiscal year, as a percentage of shares outstanding.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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