Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities

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Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2013
Jul. 31, 2012
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]    
Other Liabilities Current $ 331 $ 118
Capital Lease Obligations [Member]
    
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]    
Other Liabilities Current 149  
Installment Loans [Member]
    
Accrued Liabilities, Other Current Liabilities and Other Liabilities (Details) - Other current liabilities [Line Items]    
Other Liabilities Current $ 182 $ 118