Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands |
Jan. 31, 2017 |
Jul. 31, 2016 |
|---|---|---|
| Net of allowance for doubtful accounts | $ 7 | $ 0 |
| Accounts payable, related party | $ 43 | $ 0 |
| Preferred stock, par value | $ 0.01 | $ 0.01 |
| Preferred stock, shares authorized | 3,000 | 3,000 |
| Preferred stock, shares issued | ||
| Preferred stock, shares outstanding | ||
| Treasury stock, shares | 40 | 40 |
| Common Stock | Class A common stock | ||
| Common stock, par value | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 2,000 | 2,000 |
| Common stock, shares issued | 787 | 787 |
| Common stock, shares outstanding | 787 | 787 |
| Common Stock | Class B common stock | ||
| Common stock, par value | $ 0.01 | $ 0.01 |
| Common stock, shares authorized | 40,000 | 40,000 |
| Common stock, shares issued | 11,741 | 11,701 |
| Common stock, shares outstanding | 11,431 | 11,391 |