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Note 17 - Income Taxes (Details Textual) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2025
Cash and Cash Equivalent | $ 6,895 | $ 26,338
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries | 1,200 | 800
Domestic Tax Jurisdiction [Member] |  |
Deferred Tax Assets, Valuation Allowance |  | 43,781
Foreign Tax Jurisdiction [Member] |  |
Deferred Tax Assets, Valuation Allowance | $ 40,851 |
Internal Revenue Service (IRS) [Member] | Domestic Tax Jurisdiction [Member] |  |
Open Tax Year | 2017 2018 2019 2020 2021 2022 2023 2024 |
Operating Loss Carryforwards |  | 92,400
Operating Loss Carryforwards, Subject to Expiration |  | 32,400
Operating Loss Carryforwards, Not Subject to Expiration |  | 60,000
Deferred Tax Assets, Valuation Allowance | $ 36,100 | 39,000
Canada Revenue Agency [Member] | Foreign Tax Jurisdiction [Member] |  |
Operating Loss Carryforwards |  | 19,200
Deferred Tax Assets, Valuation Allowance | $ 4,800 | 4,700
Non-US [Member] |  |
Cash and Cash Equivalent |  | $ 800

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