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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Income Tax Disclosure [Abstract]        
Income tax expense (benefit) $ 144 $ 4 $ (859) $ 886
Income tax expense (benefit) specific to the period     $ (1,100) $ (600)