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Share Based Award Stock Based Compensation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Payment Arrangement [Abstract]      
Stock compensation $ 23,954 $ 21,918 $ 24,241
Tax benefit from stock-based compensation cost 5,564 4,840 5,706
Indirect tax benefit 1,203 $ 680 $ 2,199
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 26,300    
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 10 months 24 days