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ADVANCES FROM JOINT VENTURE PARTNERS - Disclosure of joint operations (Details) - CAD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Exploration And Evaluation Assets By Geography [Line Items] |  |
Advances from joint venture partners | $ 2,404 | $ 616
USA [Member] |  |
Exploration And Evaluation Assets By Geography [Line Items] |  |
Advances from joint venture partners | 2,305 | 457
Sweden [Member] |  |
Exploration And Evaluation Assets By Geography [Line Items] |  |
Advances from joint venture partners | $ 99 | $ 159

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