Convertible notes (Details Narrative) - USD ($)
9 Months Ended
Nov. 13, 2018
Nov. 30, 2018
Feb. 28, 2018
Nov. 30, 2017
Issuance of convertible debt   $ 5,000,000    
Restricted cash   $ 100,000 $ 38,795
Minimum [Member]        
Conversion price   $ 13.00    
Warrant [Member]        
Conversion price description   <p style="margin: 0; text-align: justify"><font style="font: 10pt Times New Roman, Times, Serif">Warrants shall be equal to the lesser of (i) $15.00 and (ii) the average closing price of the Company’s Common Stock on the Nasdaq stock market for the ten days preceding the day of the conversion of the Notes. Each Warrant expires eighteen (18) months from the date of the conversion of the Notes (the “Expiration Date”).</font></p>    
Warrants exercisable   50.00%    
Exercise price   $ 15.00    
Convertible Promissory Notes [Member] | Warrant [Member]        
Warrants acquire 50.00%      
Purchase price $ 2,450,000      
Notes [Member]        
Interest rate   8.00%    
Maturity date   May 13, 2019    
Conversion price description   <p style="margin: 0; text-align: justify"><font style="font: 10pt Times New Roman, Times, Serif">Company at the price per share equal to the lesser of (i) $13.00 and (ii) the average closing price of the Company’s Common Stock on the Nasdaq stock market for the ten days preceding the day to the conversion of the Notes (the “Conversion Price”).</font></p>    
Common stock price per share   $ 13.00