Note 6 - Stockholders' Equity (Details Textual) $ / shares in Units, $ in Millions |
Mar. 13, 2026
USD ($)
$ / shares
shares
|
Mar. 31, 2026
USD ($)
|
Dec. 31, 2025
$ / shares
|
|---|---|---|---|
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0.72 | ||
| Pre-funded Warrants [Member] | |||
| Class of Warrant or Right, Issued During Period, Price Per Warrant | $ 0.585 | ||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares | 6,399,316 | ||
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0.001 | ||
| April 2025 Private Placement, Third Closing [Member] | |||
| Private Placement, Covenant to Trigger Sale, Patients Enrolled | 35 | ||
| Stock Issued During Period, Shares, New Issues | shares | 639,931 | ||
| Shares Issued, Price Per Share | $ 0.586 | ||
| Proceeds from Issuance or Sale of Equity | $ | $ 4.1 | ||
| Deferred Offering Costs | $ | $ 0.3 |
| X | ||||||||||
- Definition Price per warrant issued during period. No definition available.
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| X | ||||||||||
- Definition Number of patients enrolled to trigger sale. No definition available.
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| X | ||||||||||
- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Specific incremental costs directly attributable to a proposed or actual offering of securities which are deferred at the end of the reporting period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Per share or per unit amount of equity securities issued. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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| X | ||||||||||
- Details
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