Quarterly report pursuant to Section 13 or 15(d)

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

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Accrued Liabilities and Other Current Liabilities (Details) - Accrued liabilities - USD ($)
$ in Thousands
Apr. 30, 2017
Jul. 31, 2016
Accrued liabilities [Abstract]    
Payroll, benefits, and commissions $ 3,956 $ 3,956
Professional fees 526 503
Legal fee expense 458 954
Research and development   300
Other 1,821 2,498
$ 6,761 $ 8,211