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Share-Based Payments (Details 1) - $ / shares
9 Months Ended
Nov. 30, 2019
Nov. 30, 2018
Feb. 28, 2019
Feb. 28, 2018
Exercise price $ 6.55 $ 8.29 $ 7.53 $ 7.99
Number of stock options, outstanding 1,657,081 2,205,290 1,962,400 2,374,581
Number of stock options, exercisable 1,007,498 1,065,414    
Weighted average remaining life, outstanding 7 years 1 month 28 days 7 years 2 months 19 days    
Weighted average remaining life, exercisable 7 years 1 month 10 days 7 years 7 months 13 days    
Stock Option 1        
Exercise price $ .80 $ .80    
Number of stock options, outstanding 577,081 582,081    
Weighted average remaining life, outstanding 6 years 7 years    
Stock Option 2        
Exercise price $ 3.00 $ 3.00    
Number of stock options, outstanding 0 0    
Weighted average remaining life, outstanding 0 years 0 years    
Stock Option 3        
Exercise price $ 5.25 $ 5.25    
Number of stock options, outstanding 380,000 380,000    
Weighted average remaining life, outstanding 7 years 8 months 27 days 8 years 8 months 27 days    
Stock Option 4        
Exercise price $ 8.75 $ 8.75    
Number of stock options, outstanding 0 0    
Weighted average remaining life, outstanding 0 years 0 years    
Stock Option 5        
Exercise price $ 11.52 $ 11.52    
Number of stock options, outstanding 0 13,209    
Weighted average remaining life, outstanding 0 years 9 years 7 months 10 days    
Stock Option 6        
Exercise price $ 12.00 $ 12.00    
Number of stock options, outstanding 700,000 700,000    
Weighted average remaining life, outstanding 7 years 9 months 15 days 8 years 9 months 15 days    
Stock Option 7        
Exercise price $ 13.49 $ 13.49    
Number of stock options, outstanding 0 250,000    
Weighted average remaining life, outstanding 0 years 8 years 10 months 17 days    
Stock Option 8        
Exercise price $ 13.89 $ 13.89    
Number of stock options, outstanding 0 280,000    
Weighted average remaining life, outstanding 0 years 25 days