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SUPPLEMENTAL FINANCIAL INFORMATION (Details 1) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | $ 2,970 | $ (6,234)
Gains (losses) on: Foreign exchange |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | 2 | (1)
Gains (losses) on: Disposal of property, plant and equipment |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | (37) | (135)
Gains (losses) on: Investment fair value through profit (loss) |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | (1,085) | (5,411)
Deconsolidation of investment in associate |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | 5,267 | 0
Reclamation obligation adjustments |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | (845) | (369)
Debt obligation adjustments |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | 26 | 0
Gains (losses) on: Other |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |
Other gains (losses) | $ (358) | $ (318)

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