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Note 4 - Capital Stock - Summary of Warrants Activity (Details) - $ / shares | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2025 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Aug. 23, 2024
Warrants outstanding (in shares) |  | 2,262,203 |  |  |
Warrants outstanding and exercisable (in shares) |  |  |  |  |
Warrants outstanding and exercisable (in shares) |  | 2,262,203 |  |  |
Warrants Issued on March 31, 2023 [Member] |  |  |  |  |
Warrants outstanding (in shares) |  | 1,789,527 |  |  |
Exercise Price (in dollars per share) |  | $ 3.41 |  |  |
Warrants outstanding and exercisable (in shares) |  |  |  |  |
Warrants outstanding and exercisable, exercise price (in dollars per share) |  |  |  |  |
Warrants outstanding and exercisable (in shares) |  | 1,789,527 |  |  |
Warrants outstanding and exercisable, exercise price (in dollars per share) |  | $ 3.41 |  |  |
Warrants Issued On June 30, 2024 [Member] |  |  |  |  |
Warrants outstanding (in shares) |  | 472,676 |  |  |
Exercise Price (in dollars per share) |  | $ 3.41 |  |  |
Warrants outstanding and exercisable (in shares) |  |  |  |  |
Warrants outstanding and exercisable, exercise price (in dollars per share) |  |  |  |  |
Warrants outstanding and exercisable (in shares) |  | 472,676 |  |  |
Warrants outstanding and exercisable, exercise price (in dollars per share) |  | $ 3.41 |  |  |
Common Warrants [Member] |  |  |  |  |
Warrants outstanding (in shares) |  | 2,262,203 |  | 2,272,203 | 2,401,047
Exercise Price (in dollars per share) |  | $ 3.41 |  | $ 3.41 |
Warrants outstanding and exercisable (in shares) | 2,272,203 | 2,272,203 | 103,453 | 103,453 |
Warrants outstanding and exercisable, exercise price (in dollars per share) | $ 3.41 | $ 3.41 | $ 69.03 | $ 69.03 |
Granted, warrants (in shares) |  |  |  | 24,104 |
Granted, warrants, exercise price (in dollars per share) |  |  |  | $ 68.4 |
Make Whole Provision, warrants (in shares) |  |  |  | 2,426,986 |
Make Whole Provision, weighted average exercise price (in dollars per share) |  |  |  | $ 3.41 |
Exercised, warrants (in shares) | (10,000) | (10,000) | 0 | (282,314) |
Exercised, warrants, exercise price (in dollars per share) | $ 3.41 | $ 3.41 |  | $ 3.41 |
Expired, warrants (in shares) |  |  |  | (26) |
Expired, warrants, exercise price (in dollars per share) |  |  |  | $ 2,575.38 |
Warrants outstanding and exercisable (in shares) |  | 2,262,203 |  | 2,272,203 |
Warrants outstanding and exercisable, exercise price (in dollars per share) |  | $ 3.41 |  | $ 3.41 |

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