Other liabilities (Details) - Schedule of other current liabilities - USD ($) $ in Thousands	Jul. 31, 2016	Jul. 31, 2015
Other liabilities (Details) - Schedule of other current liabilities [Line Items]
Other liabilities	$ 1,699	$ 1,793
Accrued Legal Settlement [Member]
Other liabilities (Details) - Schedule of other current liabilities [Line Items]
Other liabilities	800	1,220
Capital Lease Obligations [Member]
Other liabilities (Details) - Schedule of other current liabilities [Line Items]
Other liabilities	794	210
Installment Loans [Member]
Other liabilities (Details) - Schedule of other current liabilities [Line Items]
Other liabilities	$ 105	$ 363