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Income Taxes - Additional Information (Details) - USD ($) | 12 Months Ended
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Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2021
Income Tax Contingency [Line Items] |  |  |
Additions (reductions) to valuation allowance | $ 1,506,000 | $ (3,292,000) |
Operating loss carryforwards, annual utilization limits | $ 800,000 |  |
Operating loss carryforwards, utilization limit, percent | 80.00% |  |
Previous accrual of uncertain tax positions | $ 1,004,000 |  | $ 276,000
Maximum |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carry forwards expiration year | 2035 |  |
Minimum |  |  |
Income Tax Contingency [Line Items] |  |  |
Operating loss carry forwards expiration year | 2032 |  |
Federal |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating loss carryforwards | $ 9,800,000 |  |
Net operating loss carryforwards with indefinite carryforward period | $ 67,200,000 |  |
Number of years open for tax examinations | 3 years |  |
Foreign Tax Authority |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating loss carryforwards | $ 0 |  |
Tax credit carryforwards | $ 1,300,000 |  |
Foreign Tax Authority | Maximum |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of years open for tax examinations | 5 years |  |
Tax credit carry forwards expiration year | 2033 |  |
Foreign Tax Authority | Minimum |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of years open for tax examinations | 3 years |  |
Tax credit carry forwards expiration year | 2030 |  |
State Jurisdiction |  |  |
Income Tax Contingency [Line Items] |  |  |
Net operating loss carryforwards | $ 16,100,000 |  |
State Jurisdiction | Maximum |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of years open for tax examinations | 5 years |  |
State Jurisdiction | Minimum |  |  |
Income Tax Contingency [Line Items] |  |  |
Number of years open for tax examinations | 3 years |  |
Research and Development | Federal |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax credit carryforwards | $ 300,000 |  |
Research and Development | Federal | Maximum |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax credit carry forwards expiration year | 2043 |  |
Research and Development | Federal | Minimum |  |  |
Income Tax Contingency [Line Items] |  |  |
Tax credit carry forwards expiration year | 2029 |  |

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