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RECLAMATION OBLIGATIONS (Details Narrative) - CAD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Elliot Lake |  |
DisclosureOfReclamationObligationsLineItems [Line Items] |  |
Undiscounted amount of estimated future reclamation costs | $ 32,957 | $ 32,803
McClean And Midwest Joint Ventures |  |
DisclosureOfReclamationObligationsLineItems [Line Items] |  |
Undiscounted amount of estimated future reclamation costs | $ 23,275 | $ 22,810

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