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Income Taxes - Additional Information (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2021
Income Tax Contingency [Line Items] |  |  |
Income tax expense | $ 160 | $ 80 |
Benefit related to reversal of previously recorded uncertain tax positions |  | $ 300 |
Unrecognized tax benefits that would impact effective tax rate | 1,000 |  | $ 900
Accrual for potential interest and penalties | $ 700 |  | $ 600
Minimum |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of years open for tax examinations | 3 years |  |
Maximum |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of years open for tax examinations | 5 years |  |

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