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Note 13 - Related Party Transactions (Details Textual) - USD ($) |  | 3 Months Ended
--- | --- | ---
Mar. 10, 2025 | Mar. 31, 2025 | Mar. 31, 2024
Share-Based Payment Arrangement, Expense |  | $ 117 |
Deferred Stock Units (DSUS) [Member] |  |  |
Share-Based Payment Arrangement, Expense |  | 117,000 | $ 0
Restricted Stock Units (RSUs) [Member] |  |  |
Share-Based Payment Arrangement, Expense |  | $ 1 | $ 0
Officer [Member] |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | 15,000 |  |
Management and Directors [Member] | Deferred Stock Units (DSUS) [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 66,668 |  |
Management and Directors [Member] | Restricted Stock Units (RSUs) [Member] |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | 10,000 |  |

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