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SUPPLEMENTAL FINANCIAL INFORMATION (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
DisclosureOfOperatingExpensesLineItems [Line Items]    
Cost of goods and services sold $ (14,224) $ (15,390)
Operating expenses (14,436) (15,579)
Operating Overheads: Mining, other development expense    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Cost of goods and services sold (2,709) (3,695)
Operating Overheads: Milling, conversion expense    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Cost of goods and services sold (3,230) (3,268)
Less absorption: Mineral properties    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Cost of goods and services sold 61 50
Cost of services    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Cost of goods and services sold (8,346) (8,420)
Inventory-non cash adjustments    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Cost of goods and services sold 0 (57)
Cost of goods and services sold    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Operating expenses (14,224) (15,390)
Reclamation asset amortization    
DisclosureOfOperatingExpensesLineItems [Line Items]    
Operating expenses $ (212) $ (189)