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Note 10 - Convertible Promissory Note (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | --- | ---
Feb. 13, 2025 | Dec. 20, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  |  | $ 11.16 |  | $ 11.16 |  | $ 11.54
Gain (Loss) on Extinguishment of Debt |  |  | $ 0 | $ 0 | $ (1,353) | $ 0 |
Conversion of Promissory Note to Common Stock [Member] |  |  |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 3 |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | 800,000 |  |  |  |  |  |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net | $ (9,369) |  |  |  |  |  |
Debt Conversion, Converted Instrument, Fair Value of Shares Issued | 12,368 |  |  |  |  |  |
Gain (Loss) on Extinguishment of Debt | (1,353) |  |  |  |  |  |
Exercise of Conversion Options, Transaction Costs | $ 29 |  |  |  |  |  |
Convertible Promissory Note Warrants [Member] |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  | 800,000 |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) |  | $ 4 |  |  |  |  |
Convertible Promissory Note [Member] |  |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 2,400 |  |  |  |  |
Debt Instrument, Unamortized Discount |  | 360 |  |  |  |  |
Proceeds from Issuance of Debt |  | $ 2,040 |  |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) |  | $ 3 |  |  |  |  |

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