Condensed Consolidated Balance Sheets (Parentheticals) - $ / shares |
May 31, 2018 |
Aug. 31, 2017 |
|---|---|---|
| Statement of Financial Position [Abstract] | ||
| Preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Preferred stock, shares authorized | 10,000,000 | 10,000,000 |
| Preferred stock, shares issued | 0 | 0 |
| Preferred stock, shares outstanding | 0 | 0 |
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Common stock, shares authorized | 265,000,000 | 265,000,000 |
| Common stock, shares issued | 66,389,529 | 58,607,066 |
| Common stock, shares outstanding | 66,389,529 | 58,607,066 |