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Income Taxes - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Income Tax Disclosure [Abstract]        
Income tax provision $ 1,400 $ 578 $ 3,503 $ 367
Effective income tax rate 30.70% 28.50% 14.10% 13.80%