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Revenue - Contract balances (Details) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenue from Contract with Customer [Abstract]    
Contract assets $ 4,135 $ 35,027
Contract liabilities 1,944 59
Long-term contract liabilities (included in other long-term obligations) 19,027 16,114
Contract liabilities 20,971 16,173
Performance Obligation    
Revenue (derecognized) recognized $ (8,377) $ 2,598