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Note 2 - Revenue Recognition - Revenue by Geographic Area (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Total revenue | $ 37,223 | $ 50,032
Product [Member] |  |
Total revenue | 32,645 | 43,714
Asia [Member] | Product [Member] |  |
Total revenue | 18,057 | 32,216
CANADA | Product [Member] |  |
Total revenue | 369 | 1,226
Europe [Member] | Product [Member] |  |
Total revenue | 1,398 | 1,378
MEXICO | Product [Member] |  |
Total revenue | 1,281 | 166
UNITED STATES | Product [Member] |  |
Total revenue | 11,423 | 8,418
Other [Member] | Product [Member] |  |
Total revenue | $ 117 | $ 310

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