Note 4 - Discontinued Operations (Details Textual) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Jun. 30, 2025 |
Mar. 31, 2026 |
Dec. 31, 2025 |
Apr. 30, 2024 |
|
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Common stock, par value | $ 0.001 | $ 0.001 | ||
| GT Medical Technologies, Inc. [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Percentage of issued and outstanding capital stock | 0.50% | |||
| GT Medical Technologies, Inc. [Member] | GT Medical Stock [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Estimated fair value | $ 0.2 | |||
| GT Medical Technologies, Inc. [Member] | Royalty [Member] | ||||
| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | ||||
| Royalties payable | $ 0.2 |