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INCOME TAXES (Narrative) (Details) - CAD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Unused tax losses [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Unused tax losses for which no deferred tax asset recognised $ 20,100 $ 18,000
Canadian exploration and development expenditures [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 34,800 34,200
Cumulative eligible capital and undepreciated capital cost [Member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets $ 1,250 $ 1,240