Other Comprehensive Income Schedule of Other Comprehensive Income, Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Oct. 31, 2017	Oct. 31, 2016
Other Comprehensive Income (Loss), Tax [Abstract]
Derivatives used in Net Investment Hedge, Tax Benefit (Expense)	$ (301)	$ (1,568)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	(195)	(128)
Other Comprehensive Income Tax Other Adjustments	11	30
Other Comprehensive Income (Loss), Tax	$ (485)	$ (1,666)