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Note 8 - Marketable Securities (Details Textual) - Kuya Silver Corp [member] - CAD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Jan. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Statement Line Items [Line Items] |  |  |  |
Current investments |  | $ 12 | $ 595 | $ 433
Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement |  | 41 | (253) | (589)
Total number of shares received (in shares) | 777,027 |  |  |
Share price (in CAD per share) | $ 1.48 |  |  |
Discontinued operations, shares received as consideration (in shares) | 675,676 |  |  |
Disposal group, including discontinued operation, consideration 1 | $ 1,000 |  |  |
Additional shares received for settlement of receivables (in shares) | 101,351 |  |  |
Other non-current payables | $ 150 |  |  |
Percentage of royalty on net smelter returns | 2.00% |  |  |
Proceeds from sales of investments accounted for using equity method |  | $ 930 | $ 816 |
Investments, number of shares sold (in shares) |  | 2,332,000 | 1,719,500 |
Gains (losses) on disposals of investments |  | $ 306 | $ 90 | $ 220

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