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Note 10 - Stockholders' Equity and Common Stock Warrants (Details Textual) - USD ($) |  |  | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 01, 2024 | Feb. 26, 2024 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2022
Stock Issued During Period, Shares, New Issues |  | 495,959 |  |  |
Proceeds from Issuance or Sale of Equity |  |  | $ 46,411,946 | $ 0 |
Class of Warrant or Right, Exercised |  | 499,995 |  |  |
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation |  | 36 |  |  |
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 |  |  |  |
Private Placement [Member] |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 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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- 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/2003/role/disclosureRef -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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