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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022
Income Tax Disclosure [Line Items] |  |
valuation allowances reversed during the period | $ 1,800 |
State credits that are expected to expire unutilized | 710 |
Unrecognized tax benefits that would impact effective tax rate | 323 |
U.S. |  |
Income Tax Disclosure [Line Items] |  |
Operating Loss Carryforwards |  | $ 162
Tax Credit Carryforwards |  | 884
State |  |
Income Tax Disclosure [Line Items] |  |
Operating Loss Carryforwards | 12 | 3,700
Tax Credit Carryforwards | 1,100 |
Unlimited carryover | 55 |
U.K. |  |
Income Tax Disclosure [Line Items] |  |
Operating Loss Carryforwards | 15,500 |
Undistributed Earnings of Foreign Subsidiaries | $ 4,800 | $ 6,100

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