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Note 5 - Trade Accounts and Financing Receivables - Schedule of Trade Accounts and Notes Receivable (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | --- | ---
Trade accounts receivable | $ 19,510 | $ 16,151 |  |
Allowance for credit losses | (4) | (4) | $ (92) | $ (125)
Total | 19,506 | 16,147 |  |
Less current portion | (19,506) | (14,637) |  |
Non-current trade accounts receivable | $ 0 | $ 1,510 |  |

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