Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities, Other Current Liabilities and Other Liabilities (Tables)

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Accrued Liabilities, Other Current Liabilities and Other Liabilities (Tables)
12 Months Ended
Jul. 31, 2015
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities [Table Text Block] At July 31 accrued liabilities consist of:

    2015     2014  
Legal   $ 4,183     $ 4,721  
Payroll, benefits, severance and commissions     3,907       4,959  
Professional fees     678       638  
Research and development     300       400  
Other     2,229       2,199  
    $ 11,297     $ 12,917