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Note 11 - Supplementary Balance Sheet Information - Schedule of Inventory (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Raw materials and purchased parts | $ 57,230 | $ 59,861 |
Work-in-process | 9,118 | 11,400 |
Finished goods | 48,908 | 56,937 |
Total inventories | 115,256 | 128,198 |
SEC Schedule, 12-09, Reserve, Inventory [Member] |  |  |
Balance | 4,991 | 4,082 | $ 3,681
Provisions | 8,186 | 3,324 | 1,752
Inventory disposals and adjustments | (3,022) | (2,415) | (1,351)
Balance | $ 10,155 | $ 4,991 | $ 4,082

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