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Income Taxes - Narrative (Details) - USD ($) | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Income Tax Disclosure [Abstract] |  |  |
Statutory federal tax rate | 21.00% | 21.00% | 21.00%
Tax Credit Carryforward [Line Items] |  |  |
Valuation allowance | $ 2,012,000 | $ 3,192,000 |
Unrecognized tax benefits | 596,000 | $ 496,000 | $ 387,000
Unrecognized tax benefits would impact effective tax rate | 500,000 |  |
Unrecognized tax benefits income tax expense | 0 |  |
Federal |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Net operating losses | 13,500,000 |  |
State |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Net operating losses | $ 70,800,000 |  |

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