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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Statement of Financial Position [Abstract]    
Receivables, allowance for doubtful accounts $ 2,307 $ 1,100
Property and equipment, accumulated depreciation 386,319 378,639
Capitalized Software, accumulated amortization 505,112 491,739
Intangible Assets, accumulated amortization $ 13,377 $ 12,456
Shareholders' Equity:    
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 142,701,000 143,396,000
Common stock, shares outstanding 142,701,000 143,396,000