Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities (USD $) In Thousands, unless otherwise specified	Jul. 31, 2014	Jul. 31, 2013
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	$ 790	$ 331
Accrued Legal Settlement [Member]
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	400
Installment Loans [Member]
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	241	182
Capital Lease Obligations [Member]
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	$ 149	$ 149