Sales Tax, Tax Credits and Other Receivables (Details) - USD ($) |
May 31, 2019 |
Feb. 28, 2019 |
|---|---|---|
| Accounting Policies [Abstract] | ||
| Sales tax receivables | $ 222,215 | $ 82,992 |
| Research and development tax credits | 455,564 | 410,997 |
| Other receivables | 64,214 | 105,011 |
| Sales tax, research and development tax credits and other receivables | $ 741,993 | $ 599,000 |