Property and Equipment - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 159,645	$ 159,405
Less: accumulated depreciation and amortization	(133,318)	(130,464)
Property and equipment, net	26,327	28,941
Corporate Aircraft and Related Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	48,645	48,645
Computer Equipment And Purchased Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	61,828	60,979
Furniture and Equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	9,708	9,920
Leaseholds Improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	29,547	29,944
Internally Developed Software
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 9,917	$ 9,917