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Contingent Liabilites and Commitments (Repurchase Commitments) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Aug. 29, 2015
Aug. 30, 2014
Purchase Commitment, Excluding Long-term Commitment [Line Items]    
Repurchase agreement term 18 months  
Accrued loss on repurchases $ 1,329 $ 2,212
Obligation to Repurchase from Dealers [Member]    
Purchase Commitment, Excluding Long-term Commitment [Line Items]    
Contingent liability on repurchase agreements 386,000 363,800
State Obligation to Repurchase [Member]    
Purchase Commitment, Excluding Long-term Commitment [Line Items]    
Contingent liability on repurchase agreements $ 7,200 $ 6,800