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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Income Tax Disclosure [Abstract]        
Income tax provision $ 304 $ 231 $ 187 $ 460
Effective tax rate 9.00% 15.00% 3.00% 14.00%