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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, 2022
Dec. 31, 2021
Dec. 31, 2020
Consolidated Statements of Operations Information      
Depreciation, depletion and amortization $ 10,699 $ 11,023 $ 11,470
Employee benefits expenses 7,194 6,922 7,253
Expenses for defined contribution plans and similar plans 278 $ 253 $ 123
Termination benefits $ 394