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INCOME TAXES (Details 4) - CAD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Statement [Line Items]    
Deferred income tax assets not recognized $ 119,836 $ 116,819
Tax Losses - Capital    
Statement [Line Items]    
Deferred income tax assets not recognized 58,312 66,873
Tax Losses - Operating    
Statement [Line Items]    
Deferred income tax assets not recognized 51,353 42,635
Other Deductible Temporary Differences    
Statement [Line Items]    
Deferred income tax assets not recognized 5,023 1,441
Tax Credits    
Statement [Line Items]    
Deferred income tax assets not recognized 1,126 1,126
Property Plant And Equipments [Member]    
Statement [Line Items]    
Deferred income tax assets not recognized $ 4,022 $ 4,744