Quarterly report pursuant to Section 13 or 15(d)

Shareholders Equity and Capital Stock (Details 2)

v3.21.2
Shareholders Equity and Capital Stock (Details 2) - $ / shares
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Expected forfeiture rate 6.10% 6.20%     5.60%
Expected life (years) 3 years 10 months 24 days 3 years 8 months 12 days   3 years 8 months 12 days 3 years 8 months 12 days
Expected volatility 63.20% 58.60%     56.80%
Risk free rate 0.40% 1.60%     1.00%
Expected dividend rate 0.00% 0.00% 0.00% 0.00% 0.00%
Black-Scholes value (CAD$) $ 0.30 $ 0.35     $ 0.31
Minimum [Member]          
Expected forfeiture rate     5.80% 5.30%  
Expected life (years)     3 years 8 months 12 days    
Expected volatility     53.80% 56.00%  
Risk free rate     1.90% 1.00%  
Black-Scholes value (CAD$)     $ 0.33 $ 0.32  
Maximum [Member]          
Expected forfeiture rate     6.00% 6.00%  
Expected life (years)     3 years 9 months 18 days    
Expected volatility     55.00% 57.50%  
Risk free rate     2.10% 1.60%  
Black-Scholes value (CAD$)     $ 0.39 $ 0.44