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Note 6 - Property, Plant and Equipment and Capital Long-term Prepayments (Details Textual)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
CAD ($)
Dec. 31, 2023
CAD ($)
Dec. 31, 2022
CAD ($)
Statement Line Items [Line Items]      
Borrowing costs capitalised $ 0    
Non-current prepayments 139 $ 0  
Hydrometallurgical refinery [member]      
Statement Line Items [Line Items]      
Property, plant and equipment, pledged as security 51,059 51,063  
Impairment loss recognised in profit or loss, property, plant and equipment 0 49,743  
Recoverable amount of asset or cash-generating unit   44,899  
Impairment loss   2,141  
Capitalized development costs, excluding capitalized interest costs 0 16,942  
Borrowing costs capitalised 0 2,781  
Non-current prepayments 139 0  
Depreciation, property, plant and equipment $ 0 $ 0 $ 0
Hydrometallurgical refinery [member] | Discount rate, measurement input [member]      
Statement Line Items [Line Items]      
Significant unobservable input, liabilities   0.20  
Hydrometallurgical refinery [member] | Terminal multiple, measurement input [member]      
Statement Line Items [Line Items]      
Significant unobservable input, liabilities   4.75