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Income Taxes (Tax Expense and Effective Tax Rate) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Income Tax Disclosure [Abstract]        
Earnings before income taxes $ 50,287 $ 58,698 $ 142,129 $ 184,769
Income tax expense $ 10,841 $ 9,837 $ 24,472 $ 26,025
Effective tax rate 21.60% 16.80% 17.20% 14.10%