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Note 12 - Related Party Transactions (Details Textual) - USD ($) $ in Thousands |  |  |  |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 19, 2024 | Aug. 12, 2024 | Aug. 08, 2024 | Jul. 27, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Jul. 07, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Share-Based Payment Arrangement, Expense |  |  |  |  | $ 2,316 | $ 78 | $ 2,433 | $ 226 |  |  |
Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 59,264 |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 410 |  |  | 410 | 0 | 410 | 0 |  |  |
Shares Issued for Prepaid Services [Member] |  |  |  |  |  |  |  |  |  |  |
Arrangement, Shares to be Issued (in shares) |  |  |  | 433,360 |  |  |  |  |  |  |
Arrangement, Shares to be Issued, Value |  |  |  | $ 2,440 |  |  |  |  |  |  |
Prepaid Expense |  |  |  | $ 2,925 |  |  |  |  |  |  |
Arrangement, Period (Year) |  |  |  | 3 years |  |  |  |  |  |  |
Series D Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  |  |  |  |  |  | 92,799 |  |
Warrants and Rights Outstanding, Term (Year) |  |  |  |  |  |  |  |  | 5 years |  |
Warrants and Rights Outstanding |  | $ 610 |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercised During Period (in shares) | 61,866 |  |  |  |  |  |  |  |  |  |
Officer [Member] | Consulting Fees [Member] |  |  |  |  |  |  |  |  |  |  |
Related Party Transaction, Amounts of Transaction |  |  |  |  | 173 | 27 | 418 | 250 |  |  |
Director [Member] |  |  |  |  |  |  |  |  |  |  |
Long-Term Debt |  |  |  |  | 175 | $ 175 | 175 | $ 175 |  | $ 175 | $ 175
Director [Member] | Shares Issued for Prepaid Services [Member] |  |  |  |  |  |  |  |  |  |  |
Arrangement, Shares to be Issued (in shares) |  |  |  | 140,749 |  |  |  |  |  |  |
Arrangement, Shares to be Issued, Value |  |  |  | $ 745 |  |  |  |  |  |  |
Prepaid Expense |  |  |  | $ 950 | $ 677 |  | $ 677 |  |  |  |
Arrangement, Period (Year) |  |  |  | 3 years |  |  |  |  |  |  |
Director [Member] | Series D Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  |  |  |  |  |  | 30,933 |  |
Warrants and Rights Outstanding |  |  |  |  |  |  |  |  | $ 203 |  |
Class of Warrant or Right, Exercised During Period (in shares) | 30,933 |  |  |  |  |  |  |  |  |  |
Related Party [Member] | Restricted Stock Units (RSUs) [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) |  | 59,264 |  |  |  |  |  |  |  |  |
Share-Based Payment Arrangement, Expense |  | $ 410 |  |  |  |  |  |  |  |  |
Related Party [Member] | Secured Promissory Notes [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 209 |  |  |  |  |  |  |  |
Debt Instrument, Unamortized Discount (Premium), Net |  |  | 11 |  |  |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  | $ 198 |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 18.00% |  |  |  |  |  |  |  |

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