Common Shares and Warrants (Details 1) - $ / shares |
9 Months Ended | 12 Months Ended |
|---|---|---|
May 31, 2020 |
Aug. 31, 2019 |
|
| Common Shares And Warrants [Roll Forward] | ||
| Number of Warrants, Balance | 2,825,325 | 3,286,274 |
| Weighted Average Exercise Price, Balance | $ 1.38 | $ 0.72 |
| Number of Warrants, Cancelled/Expired | (750,000) | (17,498) |
| Weighted Average Exercise Price, Cancelled/Expired | $ 1.50 | $ 0.59 |
| Number of Warrants, Exercised | (1,626,513) | |
| Weighted Average Exercise Price, Exercised | $ 0.49 | |
| Number of Warrants, Issued | 12,072,829 | 1,183,062 |
| Weighted Average Exercise Price, Issued | $ 0.42 | $ 1.99 |
| Number of Warrants, Balance | 14,148,154 | 2,825,325 |
| Weighted Average Exercise Price, Balance | $ 0.56 | $ 1.38 |