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Stockholders' Equity (Tables)
 3 Months Ended
May 31, 2017
Stockholders Equity Tables  
Warrants activities
    Number of Warrant Shares     Exercise Price Range Per Share     Weighted Average Exercise Price  
                   
Balance, February 28, 2017     1,647,670     $ 0.80 to $6.00     $ 2.91  
                         
Granted     550,000     $ 5.25     $ 5.25  
                         
Exercised     (22,548 )   $ 0.80     $ 0.80  
                         
Expired     (314,667 )   $ 6.00     $ 6.00  
                         
Balance, May 31, 2017     1,860,455     $ 0.80 to $6.00     $ 3.11  
                         
Earned and exercisable, May 31, 2017     836,705     $ 0.80 to $6.00     $ 2.82  
                         
Unvested, May 31, 2017     1,023,750     $ 0.80 to $5.25     $ 3.34  
Estimated fair value of warrants on grant date
Risk-free interest rate     2.02 %
Expected dividend yield     0 %
Expected volatility     110.72 %
Expected life     6 years  
Outstanding and exercisable warrants
      Warrants Outstanding     Warrants Exercisable  
Range of Exercise Prices     Number Outstanding     Average Remaining Contractual Life (in years)     Weighted Average Exercise Price     Number Exercisable     Average Remaining Contractual Life (in years)     Weighted Average Exercise Price  
                                       
$ 0.80       912,452       0.51     $ 0.80       507,452       0.51     $ 0.80  
$ 6.00       323,003       0.08     $ 6.00       323,003       0.08     $ 6.00  
$ 3.00       75,000       1.02     $ 3.00       6,250       1.02     $ 3.00  
$ 5.25       550,000       9.98     $ 5.25       -       -     $ -