Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Property, Plant, and Equipment [Line Items]
Property and equipment, cost	$ 631,460	$ 637,364
Accumulated depreciation	(504,397)	(508,550)
Property and equipment, net	127,063	128,814
Computer hardware
Property, Plant, and Equipment [Line Items]
Property and equipment, cost	106,413	107,138
Computer software
Property, Plant, and Equipment [Line Items]
Property and equipment, cost	223,770	229,595
Furniture and equipment
Property, Plant, and Equipment [Line Items]
Property and equipment, cost	90,174	95,028
Leasehold improvements
Property, Plant, and Equipment [Line Items]
Property and equipment, cost	$ 211,103	$ 205,603