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RISK AND CAPITAL MANAGEMENT: FINANCIAL INSTRUMENTS - Disclosure of detailed information about currency risk (Details)
$ in Thousands, $ in Thousands
Dec. 31, 2020
CAD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
CAD ($)
Dec. 31, 2018
CAD ($)
Disclosure of detailed information about financial instruments [line items]        
Cash and cash equivalents $ 52,418   $ 68,994 $ 86,175
Restricted cash 196   187  
Trade receivables 2,876   981  
Accounts payable and accrued liabilities (3,618)   (1,328)  
Advances from joint venture partners (1,565)   $ (2,404)  
Currency Risk [Member]        
Disclosure of detailed information about financial instruments [line items]        
Cash and cash equivalents   $ 36,490    
Restricted cash   1,041    
Trade receivables   288    
Accounts payable and accrued liabilities   (325)    
Advances from joint venture partners   (1,197)    
Net exposure $ 46,246 $ 36,297