Software, Equipment, And Property - Schedule of Software,Equipment and Property (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	$ 327,048	$ 285,418
Less accumulated depreciation and amortization	(148,586)	(125,002)
Net software, equipment, and property	178,462	160,416
Software, Licenses and Database [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	267,917	220,625
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	21,923	27,467
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	30,966	31,046
Building and Land [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	4,910	4,910
Furniture and Other Equipment [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	$ 1,332	$ 1,370