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Note 13 - Subsequent Events (Details Textual) - USD ($) $ in Millions |  |  | 2 Months Ended
--- | --- | --- | ---
Nov. 12, 2024 | Sep. 27, 2024 | Nov. 12, 2024
Securities Purchase Agreement, Tranche Two [Member] |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 3,600,902 |
Securities Purchase Agreement [Member] |  |  |
Stock Issued During Period, Shares, New Issues (in shares) |  | 3,630,129 |
Proceeds from Issuance or Sale of Equity |  |  | $ 10.0
Subsequent Event [Member] | Pre-funded Warrants in Security Purchase Agreement Tranche Two [Member] |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 814,569 |  | 814,569
Subsequent Event [Member] | Securities Purchase Agreement, Tranche Two [Member] |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 3,600,902 |  |
Proceeds from Issuance or Sale of Equity | $ 8.8 |  |
Subsequent Event [Member] | Warrants in Security Purchase Agreement Tranche Two [Member] |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | 4,415,471 |  | 4,415,471

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