Components of Provision (Benefit from) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Current income taxes provision (benefit):
Federal	$ 2,500	$ (2,800)	$ (5,200)
State	(200)		300
Non-U.S.	6,400	6,000	4,900
Current income tax provision	8,700	3,200
Deferred income taxes (benefit) provision:
Federal	(2,900)	1,900	(2,900)
State	(100)	200	(400)
Non-U.S.	2,500	2,300	(2,100)
Deferred income taxes (benefit) provision	(457)	4,404	(5,412)
Provision (benefit from) for income taxes	$ 8,189	$ 7,552	$ (5,442)