CONSOLIDATED BALANCE SHEETS (Parenthetical) (unaudited) - USD ($) |
May 31, 2019 |
Aug. 31, 2018 |
|---|---|---|
| Common stock: | ||
| Common stock, par value (in dollars per share) | $ 0.003 | $ 0.003 |
| Common stock, shares authorized (in shares) | 40,000,000 | 40,000,000 |
| Common stock, shares outstanding (in shares) | 23,801,598 | 23,764,098 |
| Series B Preferred Stock [Member] | ||
| Preferred stock: | ||
| Preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Preferred stock, shares authorized (in shares) | 25,000,000 | 25,000,000 |
| Preferred stock, shares issued (in shares) | 432,513 | 432,513 |
| Preferred stock, shares outstanding (in shares) | 432,513 | 432,513 |
| Liquidation preference | $ 432,513 | $ 432,513 |