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Note 16 - Income Taxes - Components of Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Sep. 30, 2023
--- | --- | ---
Deferred income tax assets: |  |
Accrued compensation | $ 733 | $ 870
R&D expenditure capitalization | 3,064 | 1,538
Intangible assets | 0 | (292)
Property and equipment | (1,249) | (2,153)
Other | (105) | (6)
Domestic Tax Jurisdiction [Member] |  |
Deferred income tax assets: |  |
Inventories | 5,447 |
Loss and tax credit carryforwards | 31,850 |
Intangible assets | 290 |
Property and equipment | 331 |
Other reserves | 456 |
Subtotal deferred income tax assets | 42,171 |
Valuation allowance | (40,851) |
Net deferred income tax assets | 1,320 |
Total deferred income tax liabilities | (1,354) |
Net deferred income tax liabilities | $ (34) |
Foreign Tax Jurisdiction [Member] |  |
Deferred income tax assets: |  |
Inventories |  | 8,269
Loss and tax credit carryforwards |  | 29,581
Intangible assets |  | 0
Property and equipment |  | 504
Other reserves |  | 590
Subtotal deferred income tax assets |  | 41,352
Valuation allowance |  | (38,917)
Net deferred income tax assets |  | 2,435
Total deferred income tax liabilities |  | (2,451)
Net deferred income tax liabilities |  | $ (16)

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