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Note 4 - Capital Stock - Make Whole Provision Transactions (Details) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 | Dec. 31, 2024 | Aug. 23, 2024
Warrants outstanding (in shares) |  | 2,262,203 |  |
Warrants, deemed dividend |  | $ 8,974,000 | $ 8,974,000 |
Original Warrants [Member] |  |  |  |
Warrants outstanding (in shares) |  | 5,100,595 |  |
Aggregate Exercise Price |  | $ 8,722,000 |  |
Warrants Post Reverse Split [Member] |  |  |  |
Warrants outstanding (in shares) | [1] | 127,531 |  |
Aggregate Exercise Price | [1] | $ 8,722,000 |  |
Warrants Post Make Whole Provision [Member] |  |  |  |
Warrants outstanding (in shares) | [2] | 2,554,517 |  |
Aggregate Exercise Price | [2] | $ 8,722,000 |  |
Warrants Issued on March 31, 2023 [Member] |  |  |  |
Warrants outstanding (in shares) |  | 1,789,527 |  |
Warrants, exercise price (in dollars per share) |  | $ 3.41 |  |
Warrants, deemed dividend |  | $ 6,739,000 |  |
Warrants Issued on March 31, 2023 [Member] | Original Warrants [Member] |  |  |  |
Warrants outstanding (in shares) |  | 3,830,417 |  |
Warrants, exercise price (in dollars per share) | [3] | $ 1.71 |  |
Warrants Issued on March 31, 2023 [Member] | Warrants Post Reverse Split [Member] |  |  |  |
Warrants outstanding (in shares) | [1] | 95,764 |  |
Warrants, exercise price (in dollars per share) |  | $ 68.4 |  |
Warrants Issued on March 31, 2023 [Member] | Warrants Post Make Whole Provision [Member] |  |  |  |
Warrants outstanding (in shares) | [2] | 1,918,371 |  |
Warrants, exercise price (in dollars per share) | [4] | $ 3.41 |  |
Warrants Issued in Q2 2024 [Member] |  |  |  |
Warrants, deemed dividend |  | $ 1,696,000 |  |
Warrants Issued in Q2 2024 [Member] | Original Warrants [Member] |  |  |  |
Warrants outstanding (in shares) |  | 963,745 |  |
Warrants, exercise price (in dollars per share) | [3] | $ 1.71 |  |
Warrants Issued in Q2 2024 [Member] | Warrants Post Reverse Split [Member] |  |  |  |
Warrants outstanding (in shares) | [1] | 24,104 |  |
Warrants, exercise price (in dollars per share) |  | $ 68.4 |  |
Warrants Issued in Q2 2024 [Member] | Warrants Post Make Whole Provision [Member] |  |  |  |
Warrants outstanding (in shares) | [2] | 482,676 |  |
Warrants, exercise price (in dollars per share) | [4] | $ 3.41 |  |
Placement Agent Warrants [Member] |  |  |  |
Warrants outstanding (in shares) |  |  |  | 153,470
Warrants, deemed dividend |  | $ 539,000 |  |
Placement Agent Warrants [Member] | Original Warrants [Member] |  |  |  |
Warrants outstanding (in shares) |  | 306,433 |  |
Warrants, exercise price (in dollars per share) | [3] | $ 1.71 |  |
Placement Agent Warrants [Member] | Warrants Post Reverse Split [Member] |  |  |  |
Warrants outstanding (in shares) | [1] | 7,663 |  |
Warrants, exercise price (in dollars per share) |  | $ 68.4 |  |
Placement Agent Warrants [Member] | Warrants Post Make Whole Provision [Member] |  |  |  |
Warrants outstanding (in shares) | [2] | 153,470 |  |
Warrants, exercise price (in dollars per share) | [4] | $ 3.41 |  |
[1] | Adjusted by the Reverse Split.
[2] | Based on the original aggregate exercise price divided by the Make Whole Provision exercise price.
[3] | Original exercise price based on the March 30, 2023 initial exercise price.
[4] | Calculated by dividing (x) the sum of the dollar volume-weighted average price of the Company's Common Stock for each of the five lowest trading days during the sixteen trading days after the Reverse Split by (y) five.

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