Shareholders' Equity - Schedule of Issued Shares of Class A common stock Under 2019 Long-Term Incentive Plan and 2009 Long-Term Incentive Plan (Detail) - shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Schedule Of Employee Incentive Compensation Plans Disclosures [Line Items]
Shares issued to employees upon exercise of stock options, vesting of restricted stock units, and employee stock purchase program	0	0
2019 Long-Term Incentive Plan and 2009 Long-Term Incentive Plan [Member] | Class A Common Stock [Member] | Independent Directors for Vesting of Restricted Stock Units Compensation Plan [Member]
Schedule Of Employee Incentive Compensation Plans Disclosures [Line Items]
Shares issued to independent directors for vesting of restricted stock units issued for services rendered, in lieu of cash compensation	56,035	45,268
2019 Long-Term Incentive Plan and 2009 Long-Term Incentive Plan [Member] | Class A Common Stock [Member] | Stock Options, Vesting of Restricted Stock Units and Employee Stock Purchase Program [Member]
Schedule Of Employee Incentive Compensation Plans Disclosures [Line Items]
Shares issued to employees upon exercise of stock options, vesting of restricted stock units, and employee stock purchase program	197,546	29,991