Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment	$ 29,364	$ 35,108
Less accumulated depreciation and amortization	(17,013)	(23,276)
Property and equipment, net of accumulated depreciation and amortization	12,351	11,832
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment	3,644	6,070
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment	17,416	16,225
Office equipment
Property, Plant and Equipment [Line Items]
Property and equipment	933	1,065
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	2,528	4,101
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment	473	1,187
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 4,370	$ 6,460
Minimum
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Minimum | Computer equipment
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Minimum | Computer software
Property, Plant and Equipment [Line Items]
Estimated useful life	3 years
Minimum | Office equipment
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Minimum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Maximum | Computer equipment
Property, Plant and Equipment [Line Items]
Estimated useful life	5 years
Maximum | Computer software
Property, Plant and Equipment [Line Items]
Estimated useful life	10 years
Maximum | Office equipment
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years
Maximum | Furniture and fixtures
Property, Plant and Equipment [Line Items]
Estimated useful life	7 years