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Note 4 - Capital Stock - Summary of Common Stock Outstanding (Details) - shares | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024
Less Treasury Shares: (in shares) | (189) | (189)
Common stock, outstanding (in shares) | 1,154,737 | 1,144,737
Common Stock [Member] |  |
Issued Shares (in shares) | 1,144,926 | 573,644
Issuances from Preferred Stock conversions (in shares) |  | 288,968
Issuances related to Common Warrant exercises (in shares) | 10,000 | 282,314
Issued Shares (in shares) | 1,154,926 | 1,144,926
Less Treasury Shares: (in shares) | (189) |
Common stock, outstanding (in shares) | 1,154,737 |

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