Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2013
Current income tax expense:
United States	$ 9,075	$ (1,137)	$ 64
Other Nations	18,806	19,513	19,795
States (U.S.)	(352)	1,090	1,094
Total current income tax expense	27,529	19,466	20,953
Deferred income tax expense (benefit):
United States	(5,906)	(22,754)	22,882
Other Nations	(1,868)	(1,803)	(806)
States (U.S.)	338	128	(446)
Total deferred income tax (benefit) expense	(7,436)	(24,429)	21,630
Income Tax Expense (Benefit), Continuing Operations	$ 20,093	$ (4,963)	$ 42,583