Note 2 - Summary of Significant Accounting Policies (Details Textual) - $ / shares |
9 Months Ended | |||
|---|---|---|---|---|
Sep. 30, 2023 |
Sep. 30, 2022 |
Dec. 31, 2022 |
Nov. 30, 2019 |
|
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 5.19 | $ 5.19 | ||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 1,629,117 | 1,412,368 | ||
| Prefunded Warrants [Member] | ||||
| Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 253,828 | 253,828 | ||
| Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | |
| X | ||||||||||
- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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/2003/role/disclosureRef
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| X | ||||||||||
- Details
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