Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Property and equipment	$ 35,108	$ 47,104
Less accumulated depreciation and amortization	(23,276)	(33,476)
Property and equipment, net of accumulated depreciation and amortization	11,832	13,628
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment	6,070	6,257
Computer software
Property, Plant and Equipment [Line Items]
Property and equipment	16,225	25,766
Office equipment
Property, Plant and Equipment [Line Items]
Property and equipment	1,065	1,514
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment	4,101	4,966
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment	1,187	885
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment	$ 6,460	$ 7,716
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	7 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