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

Note 16 - Share-based Payments - Option Activity (Details)

v3.8.0.1
Note 16 - Share-based Payments - Option Activity (Details)
1 Months Ended 12 Months Ended 13 Months Ended
Mar. 31, 2017
CAD ($)
Mar. 31, 2018
CAD ($)
Feb. 28, 2017
CAD ($)
Feb. 29, 2016
CAD ($)
Mar. 31, 2017
CAD ($)
Feb. 28, 2015
CAD ($)
Statement Line Items [Line Items]            
Weighted average exercise price, outstanding $ 2.58 $ 1.81 $ 2.59 $ 13.52 $ 2.58 $ 15.33
Number of options outstanding 1,424,788 2,284,388 1,427,288 454,151 1,424,788 429,625
Weighted average exercise price, granted $ 1.75 $ 1.69 $ 4.65 $ 1.69  
Options, granted 1,121,500 1,300,400 109,188 1,300,400  
Weighted average exercise price, forfeited $ 11.50 $ 1.89 $ 13.29 $ 9.40 $ 13.27  
Options, forfeited (2,500) (199,800) (187,638) (66,912) (190,138)  
Weighted average exercise price, expired $ 18.06 $ 15.38 $ 18.57 $ 15.38  
Options, expired (62,100) (139,625) (17,500) (139,625)  
Weighted average exercise price, exercisable $ 6.44 $ 1.92 $ 6.49 $ 15.28 $ 6.44  
Exercisable at end of period 238,482 591,113 240,982 375,563 238,482  
Weighted average exercise price, exercised       $ 2.50    
Options, exercised       (250)