Note 2 - Summary of Significant Accounting Policies - Unobservable Inputs (Details) - Valuation Technique, Discounted Cash Flow [Member] |
Jun. 30, 2026 |
|---|---|
| Measurement Input, Discount Rate [Member] | |
| Royalties payable due to related parties | 19.50% |
| Measurement Input, Discount for Lack of Marketability [Member] | |
| Deferred stock issuance liability, measurement input | 20.00% |