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Warrants (Details 1)
12 Months Ended
Feb. 28, 2019
$ / shares
shares
Number of warrants outstanding | shares 802,469
Weighted average exercise price | $ / shares $ 10.74
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 24,691
Weighted average exercise price | $ / shares $ 9.32
Warrants 3  
Expiration date Feb. 25, 2021
Number of warrants outstanding | shares 200,000
Weighted average exercise price | $ / shares $ 11.00
Warrants 4  
Expiration date Feb. 25, 2021
Number of warrants outstanding | shares 300,000
Weighted average exercise price | $ / shares $ 12.00