Warrants (Details 1)
6 Months Ended
Aug. 31, 2019
$ / shares
shares
Number of warrants outstanding | shares 5,040,267
Weighted average exercise price | $ / shares $ 10.89
Warrants 1  
Expiration date Jan. 15, 2020
Number of warrants outstanding | shares 277,778
Weighted average exercise price | $ / shares $ 9.32
Warrants 2  
Expiration date Jan. 21, 2020
Number of warrants outstanding | shares 9,259
Weighted average exercise price | $ / shares $ 9.32
Warrants 3  
Expiration date Aug. 25, 2020
Number of warrants outstanding | shares 200,000
Weighted average exercise price | $ / shares $ 11.00
Warrants 4  
Expiration date Oct. 05, 2020
Number of warrants outstanding | shares 159,663
Weighted average exercise price | $ / shares $ 8.55
Warrants 5  
Expiration date Feb. 25, 2021
Number of warrants outstanding | shares 300,000
Weighted average exercise price | $ / shares $ 12.00
Warrants 6  
Expiration date Jun. 14, 2022
Number of warrants outstanding | shares 4,093,567
Weighted average exercise price | $ / shares $ 11.00