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Note 11 - Stockholders' Equity and Common Stock Warrants (Details Textual) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 11, 2024 | Apr. 01, 2024 | Feb. 26, 2024 | Jul. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023
Sale of common stock (in shares) |  |  |  | 63,422 |  |
Shares Issued, Price Per Share |  |  |  | $ 12.78 |  |
Proceeds from Issuance of Common Stock |  |  |  | $ 800,000 | $ 46,398,606 | $ 810,000
Series A Warrant [Member] |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  | 2,532,285 |  |  |  |
Prefunded Warrant [Member] |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights |  | 449,023 |  |  |  |
Class of Warrant or Right, Exercised | 449,023 |  | 499,995 |  |  |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation | 45 |  | 36 |  |  |
Stock Issued During Period, Shares, Exercise Of Warrants | 448,978 |  | 495,959 |  |  |
Private Placement [Member] |  |  |  |  |  |
Sale of common stock (in shares) |  | 2,083,262 |  |  |  |
Proceeds from Issuance or Sale of Equity |  | $ 50,000,000 |  |  |  |
Payments of Stock Issuance Costs |  | $ 3,600,000 |  |  |  |
Sales Agreement [Member] |  |  |  |  |  |
Share Sales Agreement, Maximum Amount |  |  |  |  | $ 20,000,000 |

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