Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Share capital (Details 2)

v3.19.1
Share capital (Details 2)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Disclosure of classes of share capital [line items]    
Expected share price volatility 60.00%  
Risk-free interest rate 1.86%  
Stock options    
Disclosure of classes of share capital [line items]    
Expected share price volatility 60.00% 60.00%
Dividend rate 0.00% 0.00%
Expected life of options 5 years 5 years
Stock options | Minimum    
Disclosure of classes of share capital [line items]    
Risk-free interest rate 1.91% 1.02%
Stock options | Maximum    
Disclosure of classes of share capital [line items]    
Risk-free interest rate 2.90% 1.43%