Stockholders' Equity (Details) - USD ($)
 12 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Feb. 28, 2017
Beginning balance, amount $ 10,324,065 $ 2,137,522 $ 1,417,478
Issuance of common shares for cash, amount   14,052,481 3,826,016
Issuance of shares upon cashless exercise of warrants, amount 0 0 0
Issuance of shares upon vesting of restricted stock units, amount 0    
Issuance of common shares upon exercise of warrants for cash, amount   1,642,016 160,000
Ending Balance, amount $ 2,626,392 $ 10,324,065 $ 2,137,522
Common Stock      
Beginning balance, shares 33,751,088 31,451,973 29,910,800
Beginning balance, amount $ 3,376 $ 3,146 $ 2,992
Issuance of common shares for cash, shares   1,829,061 1,275,340
Issuance of common shares for cash, amount   $ 183 $ 128
Issuance of shares upon cashless exercise of warrants, shares 18,821 115,034 38,000
Issuance of shares upon cashless exercise of warrants, amount $ 2 $ 12 $ 4
Issuance of shares upon vesting of restricted stock units, shares 35,797    
Issuance of shares upon vesting of restricted stock units, amount $ 3    
Issuance of common shares upon exercise of warrants for cash, shares   355,020 200,000
Issuance of common shares upon exercise of warrants for cash, amount   $ 35 $ 20
Ending balance, shares 33,805,706 33,751,088 31,451,973
Ending Balance, amount $ 3,381 $ 3,376 $ 3,146