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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