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SUPPLEMENTAL FINANCIAL INFORMATION (Details 1) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |  |
Other gains (losses) | $ (5,865) | $ 1,995 | [1]
Gains (losses) on: Foreign exchange |  |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |  |
Other gains (losses) | (1) | (853) |
Gains (losses) on: Disposal of property, plant and equipment |  |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |  |
Other gains (losses) | (135) | 27 |
Gains (losses) on: Investment fair value through profit (loss) |  |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |  |
Other gains (losses) | (5,411) | 2,417 |
Gains (losses) on: Extinguishment of toll milling contract liability |  |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |  |
Other gains (losses) | 0 | 899 |
Gains (losses) on: Other |  |  |
DisclosureOfOtherIncomeExpenseLineItems [Line Items] |  |  |
Other gains (losses) | $ (318) | $ (495) |
[1] | The amount reported separately as "Foreign exchange" has been grouped into "Other income (expense)" to be consistent with the presentation for fiscal 2018.

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