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Nature of business (Narrative) (Details) - CAD ($)
 1 Months Ended 12 Months Ended
Oct. 16, 2019
Dec. 31, 2019
Dec. 31, 2018
Disclosure of nature of business [Line Items]      
Accumulated deficit   $ (78,518,005) $ (26,504,819)
Net loss   (52,013,186) $ (22,710,624)
Working capital surplus   $ 2,300,000  
Class B shares      
Disclosure of nature of business [Line Items]      
Description of reverse share split October 16, 2019, the Company completed a reverse share split of 201 to 1 Class B Shares.