Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total	$ 6,778	$ 23,807
Accumulated depreciation	(3,424)	(20,540)
Property and equipment—net	$ 3,354	3,267
Minimum
Property, Plant and Equipment [Line Items]
Estimated  useful lives (years)	2 years
Maximum
Property, Plant and Equipment [Line Items]
Estimated  useful lives (years)	5 years
Information technology
Property, Plant and Equipment [Line Items]
Total	$ 5,821	22,005
Information technology | Minimum
Property, Plant and Equipment [Line Items]
Estimated  useful lives (years)	2 years
Information technology | Maximum
Property, Plant and Equipment [Line Items]
Estimated  useful lives (years)	5 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total	$ 957	$ 1,802
Furniture and fixtures | Minimum
Property, Plant and Equipment [Line Items]
Estimated  useful lives (years)	2 years
Furniture and fixtures | Maximum
Property, Plant and Equipment [Line Items]
Estimated  useful lives (years)	5 years