Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Receivables, allowance for doubtful accounts	$ 1,602	$ 1,100
Property and Equipment, accumulated depreciation	409,248	378,639
Capitalized software, accumulated amortization	545,307	491,739
Intangible assets, accumulated amortization	$ 17,716	$ 12,456
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	138,449,000	143,396,000