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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Income Tax Disclosure [Abstract]        
Income tax provision $ 15,455 $ 24,113 $ 34,685 $ 52,357
Effective income tax rate 25.90% 25.60% 26.90% 24.70%