Accrued Expenses (Details) - USD ($) $ in Thousands	Jul. 31, 2016	Jul. 31, 2015
Summary of accrued expenses
Accrued professional fees	$ 542	$ 174
Accrued compensation	362	641
Accrued equipment	101
Other	37	13
TOTAL ACCRUED EXPENSES	$ 1,042	$ 828