Other liabilities (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Jul. 31, 2017 |
Jul. 31, 2016 |
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| Other Liabilities and Financial Instruments Subject to Mandatory Redemption [Abstract] | ||
| Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation (in Dollars) | $ 517 | |
| Capital Lease Interest Rate Range Start | 4.25% | |
| Capital Lease Interest Rate Range End | 9.50% | |
| Short-term Debt, Weighted Average Interest Rate, at Point in Time | 7.50% | 8.00% |
| X | ||||||||||
- Definition The highest interest rate in the capital lease. No definition available.
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- Definition The lowest interest rate in the capital lease. No definition available.
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- Definition The total charge for the use of long-lived depreciable assets subject to a lease meeting the criteria for capitalization. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- References No definition available.
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| X | ||||||||||
- Definition Weighted average interest rate of short-term debt outstanding calculated at point in time. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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