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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2020
Income Tax Disclosure [Abstract]        
Income tax benefit (provision) $ (417) $ (188) $ 117 $ (229)
Effective tax rate 29.00% 17.00% (4.00%) 13.00%