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Asset Retirement Obligations - Continuity of the asset retirement obligation (Details) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Asset Retirement Obligations    
Balance at the beginning $ 1,674 $ 1,264
Change in estimate of discounted cash flows   410
Change in estimate from discounting (274)  
Change in estimate of costs 728  
Transferred to liabilities held for sale (338)  
Balance at the end $ 1,790 $ 1,674