Accrued Liabilities and Other Current Liabilities (Details) - Other current liabilities (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jul. 31, 2013
Accrued Liabilities and Other Current Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	$ 761	$ 331
Accrued Legal Settlement [Member]
Accrued Liabilities and Other Current Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	400
Installment Loans [Member]
Accrued Liabilities and Other Current Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	212	182
Capital Lease Obligations [Member]
Accrued Liabilities and Other Current Liabilities (Details) - Other current liabilities [Line Items]
Other Liabilities Current	$ 149	$ 149