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Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Income Taxes [Abstract]
U.S. federal income tax at statutory rate	$ (32,271)	$ (8,747)	$ (11,883)
Valuation allowance		4,110
Foreign tax rate differential	$ 25,757	961	$ (5,073)
Nondeductible expenses	659	761	714
Other	$ (73)	7	50
Prior year tax (expense) benefit		(960)	921
State and local income tax, net of federal benefit	$ (160)	(114)	(601)
PROVISION FOR INCOME TAXES	$ (6,088)	$ (3,982)	$ (15,872)

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