Income Taxes - Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2017	Jul. 31, 2016	Jul. 31, 2015
Current income tax expense (benefit):
United States	$ 15,279	$ 5,048	$ 9,075
Other Nations	23,826	19,929	18,806
States (U.S.)	1,163	1,348	(352)
Total current income tax expense	40,268	26,325	27,529
Deferred income tax (benefit) expense:
United States	(8,173)	3,946	(5,906)
Other Nations	(1,329)	(1,387)	(1,868)
States (U.S.)	221	351	338
Total deferred income tax (benefit) expense	(9,281)	2,910	(7,436)
Income Tax Expense (Benefit), Continuing Operations	$ 30,987	$ 29,235	$ 20,093