Property and Equipment - Schedule (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property and Equipment	$ 497,775	$ 430,914
Accumulated Depreciation	(284,537)	(243,283)
Property and equipment, net	213,238	187,631
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and Equipment	4,279
Accumulated Depreciation	(3,074)
Property and equipment, net	1,205	1,076
Furniture & equipment
Property, Plant and Equipment [Line Items]
Property and Equipment	5,569
Accumulated Depreciation	(4,137)
Property and equipment, net	1,432	1,909
Computer hardware
Property, Plant and Equipment [Line Items]
Property and Equipment	46,733
Accumulated Depreciation	(26,776)
Property and equipment, net	19,957	16,750
Computer software
Property, Plant and Equipment [Line Items]
Property and Equipment	35,991
Accumulated Depreciation	(28,477)
Property and equipment, net	7,514	6,107
Capitalized software development
Property, Plant and Equipment [Line Items]
Property and Equipment	405,203
Accumulated Depreciation	(222,073)
Property and equipment, net	$ 183,130	$ 161,789