Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment gross	$ 255,727	$ 268,620
Less: Accumulated depreciation	(248,748)	(256,888)
Total	6,979	11,732
Depreciation	6,500	15,600	$ 43,500
Computer hardware
Property, Plant and Equipment [Line Items]
Property and equipment gross	179,684	184,145
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment gross	52,061	52,135
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment gross	5,613	8,951
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment gross	$ 18,369	$ 23,389