Software, Equipment, and Property - Schedule of Software,Equipment and Property (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	$ 355,056	$ 331,355
Less accumulated depreciation and amortization	(187,096)	(159,276)
Net software, equipment, and property	167,960	172,079
Software, Licenses and Database [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	301,265	275,127
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	31,328	30,993
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Total software, equipment, and property	16,076	18,993
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	$ 1,477	$ 1,332