Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense	$ 19,029	$ 17,344	$ 18,108
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2016	19,102
2017	15,696
2018	13,931
2019	11,705
2020	8,196
Thereafter	22,247
Total future minimum payments due	$ 90,877