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Income Taxes (Net Current And Non-Current Components Of Deferred Income Taxes) (Details) - USD ($)
$ in Thousands
Jul. 31, 2015
Jul. 31, 2014
Income Tax Disclosure [Abstract]    
Net current deferred income tax asset $ 27,962 $ 29,249
Net non-current deferred income tax asset 0 0
Net non-current deferred income tax liability 147,796 128,562
Net deferred income tax liability $ 119,834 $ 99,313