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Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
May. 31, 2015
May. 31, 2014
May. 31, 2015
May. 31, 2014
Income Tax Expense (Benefit) $ 918 $ (156) $ 1,899 $ 548
Effective Income Tax Rate Reconciliation, Percent 43.80%   41.40%  
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Percent     34.00%