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Share Option and Warrant Reserves (Details) - CAD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share Option And Warrant Reserves    
Exploration and evaluation costs $ 528 $ 335
Fees, salaries and other employee benefits 2,002 2,212
Recognized in net loss from continuing operations 2,530 2,547
Recognized in net loss from discontinued operations 239 853
Total share-based compensation expense $ 2,769 $ 3,400