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Critical Accounting Judgments, Estimates and Assumptions (Details Narrative) - CAD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure Of Notes And Other Explanatory Information Explanatory Abstract |  |  |
Exploration and evaluation assets | $ 38,633 | $ 64,479 |
Write-off exploration and evaluation assets | $ 26,510 |  |

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- Definition The amount of exploration and evaluation assets recognised as tangible assets in accordance with the entity's accounting policy. [Refer: Exploration and evaluation assets [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 6 -IssueDate 2019-01-01 -Paragraph 25 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=6&code=ifrs-tx-2019-en-r&anchor=para_25&doctype=Standard -URIDate 2019-03-27 + Details
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