Stockholders' Equity (Details) - USD ($)
 12 Months Ended
Feb. 28, 2021
Feb. 29, 2020
Beginning balance, amount $ 38,463,708 $ 2,626,392
Issuance of common shares for cash, net of share issuance costs (Note 12), amount 24,996,628 39,072,648
Issuance of shares upon vesting of restricted stock units (Note 12), amount 0 0
Issuance of shares upon the cashless exercise of stock options (Note 12), amount   0
Issuance of shares upon exercise of warrants (Notes 12 and 15), amount 1,652,626 143,749
Issuance of shares for legal settlement (Note 18), amount   0
Issuance of shares upon conversion of convertible notes (Note 10 and Note 12), amount   7,677,254
Ending Balance, amount $ 32,824,524 $ 38,463,708
Common Stock    
Beginning balance, shares 39,910,774 33,805,706
Beginning balance, amount $ 3,992 $ 3,381
Issuance of common shares for cash, net of share issuance costs (Note 12), shares 2,087,000 4,693,567
Issuance of common shares for cash, net of share issuance costs (Note 12), amount $ 209 $ 469
Issuance of shares upon vesting of restricted stock units (Note 12), shares 225,388 244,884
Issuance of shares upon vesting of restricted stock units (Note 12), amount $ 22 $ 25
Issuance of shares upon the cashless exercise of stock options (Note 12), shares   69,101
Issuance of shares upon the cashless exercise of stock options (Note 12), amount   $ 7
Issuance of shares upon exercise of warrants (Notes 12 and 15), shares 190,529 15,432
Issuance of shares upon exercise of warrants (Notes 12 and 15), amount $ 19 $ 1
Issuance of shares for legal settlement (Note 18), shares   150,000
Issuance of shares for legal settlement (Note 18), amount   $ 15
Issuance of shares upon conversion of convertible notes (Note 10 and Note 12), shares   932,084
Issuance of shares upon conversion of convertible notes (Note 10 and Note 12), amount   $ 94
Ending balance, shares 42,413,691 39,910,774
Ending Balance, amount $ 4,242 $ 3,992