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Nature Of Operations And Summary Of Significant Accounting Policies (Accrued Liabilities) (Details) - USD ($)
$ in Thousands
Aug. 31, 2018
Aug. 31, 2017
Nature Of Operations And Summary Of Significant Accounting Policies [Abstract]    
Accrued compensation $ 11,858 $ 10,611
Other accrued liabilities 8,903 12,006
Accrued liabilities $ 20,761 $ 22,617