Stock-Based Incentive Plans - Additional Information (Detail) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) plan shares	Dec. 31, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of current benefit plans | plan	2
Number of benefit plans | plan	9
Number of expired benefit plans | plan	7
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)	2,345,996	2,180,181
Unrecognized compensation cost relating to nonvested share-based compensation | $	$ 50.8
Unrecognized compensation cost expected to be recognized over weighted average period (in years)	1 year 1 month 6 days
Expired Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available under plan (in shares)	0
Vest in 2024 | Restricted Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of restricted class A common stock outstanding (in shares)	1,055,359
Vest in 2025 | Restricted Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of restricted class A common stock outstanding (in shares)	848,837
Vest in 2026 | Restricted Class A Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of restricted class A common stock outstanding (in shares)	441,800
Class A Common Stock | Stock Incentive Current Plan
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)	7,373,003