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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, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Taxes [Abstract]      
Statutory rate 21.00%    
Income tax provision calculated using the statutory rate of 21% $ 73,577 $ 69,233 $ 73,566
State and local income taxes, less federal income tax effect 2,306 10,207 10,025
Nondeductible expenses 6,600 6,958 7,443
Excess stock compensation tax benefits (4,330) (5,928) (9,884)
Other --net (295) (415) 614
Income tax provision $ 77,858 $ 80,055 $ 81,764
Effective tax rate 22.20% 24.30% 23.30%