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INCOME TAXES - Disclosure of detailed information about income tax expense (Details) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Major components of tax expense (income) [abstract]    
Current tax expense $ 506 $ 0
Deferred tax expense (recovery) 2,113 (415)
Tax expense (income) $ 2,619 $ (415)