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Income Taxes (Narrative) (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Income Taxes [Abstract]        
Effective income tax rate 23.70% (289.40%) 22.30% (21.60%)
CARES Act, employee retention credits $ 0