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Consolidated Statements of Comprehensive Income Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Thousands
12 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Jul. 31, 2014
Statement of Comprehensive Income (Parenthetical) [Abstract]      
Translation Adjustment Functional to Reporting Currency, Tax Benefit (Expense) $ (1,905) $ 2,578 $ 82