Other Income (Expense), Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Other Operating (Losses) Gains, Net / Other Income (Expense), Net [Abstract]
Foreign currency transaction gains (losses)	$ 980	$ (1,704)	$ (5,883)
Gain (loss) on marketable securities	543	(54)	(65)
(Loss) gain on investments	(405)	1,500	1,283
Other	931	(430)	(35)
TOTAL	$ 2,049	$ (688)	$ (4,700)