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Shareholders' Equity (Options, Fair Value Assumptions) (Details) - 6 months ended Jun. 30, 2020 - Options
$ / shares
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Exercise price (CAD per share) $ 7.44  
Risk-free interest rate 1.63%  
Expected volatility 65.73%  
Expected life of options 10 years  
Expected dividend yield 0.00%  
Fair value on date of grant (in dollars per share)   $ 4.10