Income Taxes (Income Before Provision for Income Taxes) (Details) - USD ($)	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Income Tax Disclosure [Abstract]
U.S.	$ (7,666,000)	$ 33,425,000	$ 36,885,000
Foreign	(526,000)	578,000	1,622,000
(Loss) income before (benefit from) provision for income taxes	$ (8,192,000)	$ 34,003,000	$ 38,507,000