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Asset Retirement Obligations - Assumptions used to calculate the asset retirement obligation (Details) - Asset Retirement Obligation
$ in Thousands
Dec. 31, 2022
CAD ($)
Dec. 31, 2021
CAD ($)
Dec. 31, 2021
Assumptions      
Significant unobservable input of liabilities 116 410  
Undiscounted cash flows      
Assumptions      
Significant unobservable input of liabilities 1,932    
Nominal discount rate      
Assumptions      
Significant unobservable input of liabilities 3.31 1,204 1.47
Long-term inflation rate      
Assumptions      
Significant unobservable input of liabilities 2.5   2.1