Components of Provision (Benefit from) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Current income taxes provision (benefit):
Federal	$ (2,800)	$ (5,200)	$ 11,100
State		300	500
Non-U.S.	6,000	4,900	400
Current income tax provision	3,200		12,000
Deferred income taxes provision (benefit):
Federal	1,900	(2,900)	12,300
State	200	(400)	(100)
Non-U.S.	2,300	(2,100)	(11,200)
Deferred income taxes provision (benefit)	4,400	(5,400)	1,000
Provision (benefit from) for income taxes	$ 7,552	$ (5,442)	$ 12,976