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Note 10 - Common Stock Warrants and Warrant Liabilities - Schedule of Stockholders' Equity Note, Warrants or Rights (Details) (Parentheticals) |  | 3 Months Ended |
--- | --- | --- | ---
Feb. 20, 2026 | Mar. 31, 2026 | Oct. 31, 2025 shares
Stockholders' Equity Note, Stock Split, Conversion Ratio |  | 5 |
October 2025 Pre-Funded Warrants [Member] |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  |  | 22,664,040
Reverse Stock Split [Member] |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 5 | 5 |

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- 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. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-3 + Details
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- Definition Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 20 -Name Accounting Standards Codification -Section S50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479951/505-20-S50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 20 -Name Accounting Standards Codification -Section S25 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479982/505-20-S25-2 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 4.C) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-4 + Details
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