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Concentration Risk (Narrative) (Details) - Sales Revenue, Goods, Net [Member] - Customer Concentration Risk [Member]
6 Months Ended
Feb. 24, 2018
Feb. 25, 2017
Concentration risk threshhold [Member]    
Concentration Risk [Line Items]    
Percent of revenue 10.00%  
Major Customer One [Member]    
Concentration Risk [Line Items]    
Percent of revenue   13.70%
Major Customer Two [Member]    
Concentration Risk [Line Items]    
Percent of revenue   11.80%