Annual report pursuant to Section 13 and 15(d)

Accrued Liabilities (Tables)

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Accrued Liabilities (Tables)
12 Months Ended
Jul. 31, 2018
Payables and Accruals [Abstract]  
Schedule of Accrued Liabilities [Table Text Block] At July 31 accrued liabilities consist of:

    2018     2017  
Payroll, benefits, severance and commissions   $ 4,870     $ 4,092  
Legal     2,121       442  
Professional fees     811       599  
Research and development           143  
Other     2,252       1,444  
    $ 10,054     $ 6,720