Employee Benefit Plans - Schedule of Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Thousands	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Compensation and Retirement Disclosure [Abstract]
Current liability	$ 499	$ 659
Non-current liability	3,301	3,476
Defined Benefit Plan, Benefit Obligation	$ 3,800	$ 4,135	$ 8,056