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Financial derivative liabilities (Tables)
 9 Months Ended
Sep. 30, 2020
Disclosure of maturity analysis for derivative financial liabilities [abstract]  
Disclosure of detailed information about financial derivative liabilities [Table Text Block]
    Total  
Balance at December 31, 2018 $ 111,953  
Fair value adjustment when notes were converted into common shares   (111,953 )
Fair value of financial derivative liabilities on initial recognition   30,688  
Fair value adjustment   (1,225 )
Balance at December 31, 2019   29,463  
Fair value adjustment   (29,463 )
Balance at September 30, 2020 $ -