Condensed Balance Sheets (Parentheticals) - $ / shares |
Jan. 31, 2017 |
Jul. 31, 2016 |
|---|---|---|
| Statement Of Financial Position [Abstract] | ||
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |
| Common stock, shares authorized | 300,000,000 | 300,000,000 |
| Common stock, shares issued | 52,042,286 | 52,042,286 |
| Common stock, shares outstanding | 52,042,286 | 52,042,286 |