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

Note 17 - Share-based Payments - Outstanding and Exercisable Options (Details)

v3.19.2
Note 17 - Share-based Payments - Outstanding and Exercisable Options (Details)
Mar. 31, 2019
CAD ($)
Mar. 31, 2018
CAD ($)
Mar. 31, 2017
CAD ($)
Feb. 28, 2017
CAD ($)
Feb. 29, 2016
Statement Line Items [Line Items]          
Weighted average remaining contractual life outstanding 7.91        
Number of options outstanding 4,046,677 2,284,388 1,424,788 1,427,288 454,151
Weighted average exercise price exercisable $ 1.56 $ 1.92 $ 6.44 $ 6.49  
Number of options exercisable 1,613,200 591,113 238,482 240,982  
Bottom of range [member]          
Statement Line Items [Line Items]          
Exercise price        
Top of range [member]          
Statement Line Items [Line Items]          
Exercise price        
Range one of exercises prices [member]          
Statement Line Items [Line Items]          
Weighted average remaining contractual life outstanding 9.26        
Number of options outstanding 1,898,523        
Weighted average exercise price exercisable $ 0.77        
Number of options exercisable 348,197        
Range one of exercises prices [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 0.77        
Range one of exercises prices [member] | Top of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 0.77        
Range two of exercises prices [member]          
Statement Line Items [Line Items]          
Weighted average remaining contractual life outstanding 5.86        
Number of options outstanding 775,000        
Weighted average exercise price exercisable $ 1.50        
Number of options exercisable 518,750        
Range two of exercises prices [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 0.78        
Range two of exercises prices [member] | Top of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 1.58        
Range three of exercises prices [member]          
Statement Line Items [Line Items]          
Weighted average remaining contractual life outstanding 7.9        
Number of options outstanding 273,333        
Weighted average exercise price exercisable $ 1.65        
Number of options exercisable 233,333        
Range three of exercises prices [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 1.59        
Range three of exercises prices [member] | Top of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 1.71        
Range four of exercises prices [member]          
Statement Line Items [Line Items]          
Weighted average remaining contractual life outstanding 8.21        
Number of options outstanding 790,833        
Weighted average exercise price exercisable $ 1.77        
Number of options exercisable 292,500        
Range four of exercises prices [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 1.72        
Range four of exercises prices [member] | Top of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 1.88        
Range five of exercises prices [member]          
Statement Line Items [Line Items]          
Weighted average remaining contractual life outstanding 3.97        
Number of options outstanding 308,988        
Weighted average exercise price exercisable $ 2.57        
Number of options exercisable 220,420        
Range five of exercises prices [member] | Bottom of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 1.89        
Range five of exercises prices [member] | Top of range [member]          
Statement Line Items [Line Items]          
Exercise price $ 6.50