Property and Equipment - Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Gross property and equipment	$ 80,793	$ 89,790
Less: Accumulated depreciation	(61,869)	(54,718)
Property and equipment, net	18,924	35,072
Computer Equipment
Property Plant And Equipment [Line Items]
Gross property and equipment	15,770	23,155
Leasehold Improvements
Property Plant And Equipment [Line Items]
Gross property and equipment	54,079	55,224
Furniture, Fixtures, and Other Assets
Property Plant And Equipment [Line Items]
Gross property and equipment	$ 10,944	$ 11,411