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TRADE AND SETTLEMENT RECEIVABLES, AND OTHER ASSETS - Disclosure of detailed information about currency of receivables (Details) - CAD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Trade And Other Current Currencies Receivable [Line Items]    
Receivables $ 2,876 $ 981
Canadian Dollars [Member]    
Trade And Other Current Currencies Receivable [Line Items]    
Receivables 243 158
US Dollars [Member]    
Trade And Other Current Currencies Receivable [Line Items]    
Receivables 367 453
Swedish Krona [Member]    
Trade And Other Current Currencies Receivable [Line Items]    
Receivables $ 2,266 $ 370