Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 81,868	$ 78,536
Less accumulated depreciation and amortization	(27,509)	(26,015)
Property and equipment, net	54,359	52,521
Depreciation expense	4,800	4,200	$ 4,300
Computer equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	27,300	26,357
Buildings
Property, Plant and Equipment [Line Items]
Property and equipment, gross	28,569	26,564
Land
Property, Plant and Equipment [Line Items]
Property and equipment, gross	10,320	10,386
Land improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,195	7,195
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,105	763
Furniture, fixtures and other
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 7,379	$ 7,271