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Capital Stock and Share Based Compensation Plans - Additional restricted stock and restricted stock unit vesting (Details) - Restricted stock units - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of RSUs vested $ 21,548 $ 8,518 $ 11,618
Tax benefits realized on shares and units vested $ 5,101 $ 2,019 $ 2,969