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

Share Based Payments - Schedule of Stock Options and Weighted Average Exercise Prices (Details)

v3.8.0.1
Share Based Payments - Schedule of Stock Options and Weighted Average Exercise Prices (Details)
12 Months Ended
Dec. 31, 2017
CAD ($)
shares
Dec. 31, 2016
CAD ($)
shares
Dec. 31, 2015
CAD ($)
shares
Dec. 31, 2017
CAD ($)
Dec. 31, 2017
Disclosure Of Share-based Payment Arrangements [Abstract]          
Outstanding, beginning of the year (shares) | shares 8,674,227 8,561,394 5,446,394    
Granted during the year (shares) | shares 405,000 1,572,000 3,280,000    
Forfeited during the year (shares) | shares (2,012,660) (737,500) (100,000)    
Expired during the year (shares) | shares (116,900) (721,667) (65,000)    
Exercised during the year (shares) | shares (801,000) 0 0    
Outstanding, end of the year (shares) | shares 6,148,667 8,674,227 8,561,394    
Options exercisable, end of the year (shares) 5,453,501 6,729,643 6,476,394   5,453,501
Outstanding, beginning of the year (cad per share) $ 1.83 $ 2.17 $ 3.19    
Granted during the year (cad per share) 0.48 0.28 0.43    
Forfeited during the year (cad per share) 3.45 0.65 1.69    
Expired during the year (cad per share) 2.22 3.61 1.49    
Exercised during the year (cad per share) 0.43 0.00 0    
Outstanding, end of the year (cad per share) $ 1.39 1.83 2.17    
Options exercisable, end of the year (cad per share)   $ 2.27 $ 2.73 $ 1.51