Employee benefit plan (Details) - Schedule of contrubutions plan - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jul. 31, 2017 |
Jul. 31, 2016 |
Jul. 31, 2015 |
|
| Schedule of contrubutions plan [Abstract] | |||
| Contributions | $ 205 | $ 224 | $ 224 |
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
|