Annual reports filed by certain Canadian issuers pursuant to Section 15(d) and Rule 15d-4

Share capital - Weighted average assumptions (Details)

v3.19.1
Share capital - Weighted average assumptions (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Share capital [Abstract]    
Annualized volatility 55.00% 74.00%
Risk-free interest rate 2.04% 1.31%
Life of options in years 4 6.6
Estimated forfeiture rate, share options granted 22.40% 25.50%
Expected dividend as percentage, share options granted 0.00% 0.00%
Exercise price, share options granted $ 5.29 $ 4.12
Market price on date of grant, share options granted $ 5.29 $ 4.12
Share options granted, fair value $ 2.89 $ 2.79