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Income Taxes - Summary of Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Income Tax Disclosure [Abstract]    
Income before income taxes $ 55,376 $ 77,407
Provision for income taxes $ 9,287 $ 53,892
Effective income tax rate 17.00% 70.00%