Property and Equipment, Net - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 122,998	$ 119,135
Accumulated depreciation	(81,652)	(79,723)
Property and equipment, net	41,346	39,412
Buildings and leasehold improvements
Property, Plant and Equipment [Line Items]
Total property and equipment	37,022	33,284
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total property and equipment	28,006	27,560
Capitalized software
Property, Plant and Equipment [Line Items]
Total property and equipment	34,503	37,203
Equipment
Property, Plant and Equipment [Line Items]
Total property and equipment	$ 23,467	$ 21,088