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SUPPLEMENTAL FINANCIAL INFORMATION (Details 2) - CAD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
DisclosureOfFinanceIncomeExpenseLineItems [Line Items] |  |
Finance income (expense) | $ (3,653) | $ (4,226)
Interest income |  |
DisclosureOfFinanceIncomeExpenseLineItems [Line Items] |  |
Finance income (expense) | 1,049 | 265
Interest expense |  |
DisclosureOfFinanceIncomeExpenseLineItems [Line Items] |  |
Finance income (expense) | 0 | (6)
Accretion expense-deferred revenue |  |
DisclosureOfFinanceIncomeExpenseLineItems [Line Items] |  |
Finance income (expense) | (3,314) | (3,115)
Accretion expense-reclamation obligations |  |
DisclosureOfFinanceIncomeExpenseLineItems [Line Items] |  |
Finance income (expense) | (1,316) | (1,296)
Accretion expense-post-employment benefits |  |
DisclosureOfFinanceIncomeExpenseLineItems [Line Items] |  |
Finance income (expense) | $ (72) | $ (74)

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