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Commitments And Contingencies (Narrative) (Details) - USD ($)
$ in Thousands
2 Months Ended 12 Months Ended
Aug. 31, 2016
Aug. 31, 2017
Aug. 31, 2016
Aug. 31, 2015
Commitments And Contingencies [Abstract]        
HPE outsourcing contract, fixed charge per month $ 18      
HPE outsourcing contract, expiration date   Jun. 30, 2019    
HPE outsourcing contract, expense   $ 2,600 $ 3,800 $ 4,900
HPE outsourcing contract, freight charges   1,500 1,800 $ 1,900
Purchase commitments   6,600    
Amount of letters of credit 100 $ 100 100  
Letters of credit, expiration date   Jan. 01, 2018    
Amount drawn on letters of credit $ 0 $ 0 $ 0