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Income Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Jul. 31, 2018
Jul. 31, 2017
Jul. 31, 2016
Income Taxes [Abstract]      
Domestic $ 910 $ (3,161) $ 11,278
Foreign 7,191 10,781 18,190
INCOME BEFORE INCOME TAXES $ 8,101 $ 7,620 $ 29,468