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Income Taxes (Details 5) - USD ($)
$ in Thousands
12 Months Ended
Jul. 31, 2015
Jul. 31, 2014
Jul. 31, 2013
Income Taxes [Abstract]      
Balance at beginning of year $ 356
Additions based on tax positions related to the current year
Additions for tax positions of prior years $ 356
Reductions for tax positions of prior years
Settlements $ (356)
Lapses of statutes of limitations
Balance at end of year $ 356