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Note 3 - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Apr. 30, 2020 | Sep. 30, 2024 | Sep. 30, 2023
Allowance for Doubtful Accounts, Premiums and Other Receivables | $ 0 |  | $ 0 |
Finite-Lived Intangible Asset, Useful Life | 25 years | 25 years | 25 years |
Share-Based Payment Arrangement, Option [Member] |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate |  |  | 0.00% | 0.00%
Licensing Agreements [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life | 25 years | 25 years | 25 years |
License Agreement, Renewal Period |  | 5 years | 5 years |
Capitalized Costs, Property Plant and Equipment [Member] |  |  |  |
Property, Plant and Equipment, Additions | $ 5 |  |  |
Computer Equipment [Member] |  |  |  |
Depreciation, Declining Balance Method, Percentage |  |  | 30.00% |
Property, Plant and Equipment, Useful Life | 3 years |  | 3 years |
Furniture and Equipment [Member] |  |  |  |
Depreciation, Declining Balance Method, Percentage |  |  | 20.00% |
Property, Plant and Equipment, Useful Life | 4 years |  | 4 years |

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