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Note 6 - Sale of Homestake Resources - Schedule of Disposition (Details) - CAD ($)
$ in Thousands
12 Months Ended
Feb. 25, 2022
Dec. 06, 2021
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Statement Line Items [Line Items]          
Mineral interests, derecognised     $ 9,578 $ 8,953  
Reclamation bond, derecognised     855 1,034  
Net proceeds, working capital adjustment     (410) 184 $ 903
Net gain on disposition     $ (0) $ 468 $ 48,390
Homestake Resources [member]          
Statement Line Items [Line Items]          
Net assets derecognized $ 16,528        
Net proceeds, cash 5,000 $ 5,000      
Net proceeds, working capital adjustment 68        
76,504,590 common shares of Dolly Varden 60,439        
Net proceeds, transaction costs (589)        
Net proceeds 64,918        
Net gain on disposition 48,390        
Homestake Resources [member] | Financial guarantee contracts [member] | Reclamation bond [member]          
Statement Line Items [Line Items]          
Reclamation bond, derecognised 68        
Homestake Resources [member] | Mineral property interests [member]          
Statement Line Items [Line Items]          
Mineral interests, derecognised $ 16,460