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Consolidated Statements of Operations Information - Additional information on the nature of expenses incurred in continuing operations (Details) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Consolidated Statements of Operations Information      
Depreciation, depletion and amortization $ 7,929 $ 10,699 $ 11,023
Employee benefits expenses 8,057 7,194 6,922
Expenses for defined contribution plans and similar plans $ 227 278 $ 253
Termination benefits   $ 394