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OTHER FINANCIAL ASSETS - Disclosure of other financial assets (Details) - CAD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
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Disclosure of financial assets [line items] |  |
Other current financial assets | $ 3,583 | $ 730
Other non current financial assets | 5,298 | 6,783
Marketable securities [Member] |  |
Disclosure of financial assets [line items] |  |
Other current financial assets | 1,791 | 730
Copper put options [Member] |  |
Disclosure of financial assets [line items] |  |
Other current financial assets | 1,514 | 0
Fuel call options [Member] |  |
Disclosure of financial assets [line items] |  |
Other current financial assets | 278 | 0
Investment in subscription receipts [Member] |  |
Disclosure of financial assets [line items] |  |
Other non current financial assets | 1,200 | 2,400
Reclamation deposits [Member] |  |
Disclosure of financial assets [line items] |  |
Other non current financial assets | 2,825 | 3,083
Restricted cash [Member] |  |
Disclosure of financial assets [line items] |  |
Other non current financial assets | $ 1,273 | $ 1,300

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- Definition The amount of current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets; Current financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_d&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of non-current financial assets that the entity does not separately disclose in the same statement or note. [Refer: Other financial assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 54 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_54_d&doctype=Standard -URIDate 2019-03-27 + Details
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