Employee benefit plan (Details) - Schedule of contrubutions plan - USD ($) $ in Thousands |
12 Months Ended | ||
|---|---|---|---|
Jul. 31, 2014 |
Jul. 31, 2013 |
Jul. 31, 2012 |
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| Schedule of contrubutions plan [Abstract] | |||
| Contributions | $ 279 | $ 467 | $ 521 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. No definition available.
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