Contingent Liabilites and Commitments (Repurchase Commitments Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended
	May 28, 2016	Aug. 29, 2015
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Repurchase agreement term	18 months
Accrued loss on repurchases	$ 1,126	$ 1,329
Major Customers One and Two [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Percent of revenue	31.00%
Obligation to Repurchase from Dealers [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Contingent liability on repurchase agreements	$ 419,000	386,000
State Obligation to Repurchase [Member]
Purchase Commitment, Excluding Long-term Commitment [Line Items]
Contingent liability on repurchase agreements	$ 7,300	$ 7,200