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Note 9 - Asset Retirement Obligations (Details Textual)
$ in Thousands
Dec. 31, 2024
CAD ($)
Dec. 31, 2023
Statement Line Items [Line Items]    
Estimated cost of closure $ 3,323  
Surety bond as financial assurance $ 3,450  
Asset retirement obligation [member] | Discount rate, measurement input [member]    
Statement Line Items [Line Items]    
Significant unobservable input, liabilities 2,842,000 3,126,000
Asset retirement obligation [member] | Interest rate, measurement input [member]    
Statement Line Items [Line Items]    
Significant unobservable input, liabilities 0.0333 0.0398
Asset retirement obligation [member] | Long-term inflation rate, measurement input [member]    
Statement Line Items [Line Items]    
Significant unobservable input, liabilities 0.03 0.03