Employee Benefit Plan (Details) - USD ($)	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Employee Benefit Plan [Abstract]
Minimum age required for 401(k) savings plan	18 years
Requisite service period for 401(k) savings plan	1 year
Company's contribution to the plan	$ 163,000	$ 120,000	$ 203,000