Stock-Based Incentive Plans - Additional Information (Detail) $ in Millions	9 Months Ended
Sep. 30, 2025 USD ($) plan shares	Dec. 31, 2024 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of benefit plans \| plan	2
Restricted Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, vesting period (in years)	3 years
Number of shares of restricted class A common stock outstanding (in shares)	1,582,654	2,142,759
Unrecognized compensation cost relating to nonvested share-based compensation \| $	$ 30.2
Unrecognized compensation cost expected to be recognized over weighted average period (in years)	1 year
Restricted Class A Common Stock \| Vest in 2025
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of restricted class A common stock outstanding (in shares)	304,010
Restricted Class A Common Stock \| Vest in 2026
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of restricted class A common stock outstanding (in shares)	863,026
Restricted Class A Common Stock \| Vest in 2027
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of restricted class A common stock outstanding (in shares)	415,618
Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares available under plan (in shares)	10,400,000
Number of shares available under plan (in shares)	5,980,325

Share-Based Compensation Arrangement By Share-Based Payment Award, Number Of Stock Incentive Plans

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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