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RECLAMATION BONDS - Disclosure of detailed information about reclamation bonds (Details) - CAD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Exploration And Evaluation Assets By Geography [Line Items]    
Reclamation bonds $ 456 $ 732
U.S.A - various properties [Member]    
Exploration And Evaluation Assets By Geography [Line Items]    
Reclamation bonds 448 680
Sweden - various properties [Member]    
Exploration And Evaluation Assets By Geography [Line Items]    
Reclamation bonds 8 42
Other [Member]    
Exploration And Evaluation Assets By Geography [Line Items]    
Reclamation bonds $ 0 $ 10