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Income Taxes (Schedule Of Difference Between Actual Income Tax Provision For Continuing Operations And Income Tax Provision Calculated At Statutory U.S. Federal Tax Rate) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Income Taxes [Abstract]      
Statutory rate 21.00%    
Income tax provision calculated using the statutory rate of 21% $ 69,233 $ 73,566 $ 83,158
State and local income taxes, less federal income tax effect 10,207 10,025 13,855
Nondeductible expenses 6,958 7,443 5,377
Excess stock compensation tax benefits (5,928) (9,884) (26,089)
Other --net (415) 614 223
Income tax provision $ 80,055 $ 81,764 $ 76,524
Effective tax rate 24.30% 23.30% 19.30%