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Revaluation (gains) and losses (Details) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Revaluation Gains And Losses [Abstract]    
Unrealized exchange (gain) loss $ 155 $ (296)
Change in fair value due to revaluation of derivative liability 8 570
Realized gain on investment portfolio   (294)
Unrealized loss (gain) on investment portfolio, net 2,249 (100)
Realized gain on other-receivable (258)  
Losses related to property and equipment 272 102
Revaluation (gain) and losses $ 2,426 $ (18)