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Note 15 - Income Taxes - Components of Net Deferred Income Tax Assets (Liabilities) (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Sep. 30, 2022
--- | --- | ---
Deferred income tax assets: |  |
Accrued compensation | $ 870 | $ 609
R&D expenditure capitalization | 1,538 | 0
Property and equipment | (2,153) | (2,874)
Other | (6) | (109)
Domestic Tax Authority [Member] |  |
Deferred income tax assets: |  |
Inventories | 8,269 |
Loss and tax credit carry-forwards | 29,581 |
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 |
Intangible assets | (292) |
Total deferred income tax liabilities | (2,451) |
Net deferred income tax liabilities | $ (16) |
Foreign Tax Authority [Member] |  |
Deferred income tax assets: |  |
Inventories |  | 8,513
Loss and tax credit carry-forwards |  | 34,643
Property and equipment |  | 578
Other reserves |  | 359
Subtotal deferred income tax assets |  | 44,702
Valuation allowance |  | (41,376)
Net deferred income tax assets |  | 3,326
Intangible assets |  | (356)
Total deferred income tax liabilities |  | (3,339)
Net deferred income tax liabilities |  | $ (13)

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