Debt And Capital Lease Obligations (Capital Lease And Finance Obligations) (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	May 28, 2016	May 30, 2015	Aug. 29, 2015
Capital Leased Assets [Line Items]
Amount due under capital leases and financing agreements	$ 28,760		$ 27,804
New capital leases	1,321
Financing obligations for certain information technology equipment	453	$ 530	530
Property and equipment acquired under capital leases and financing agreements	30,423		32,535
Property and equipment acquired under capital leases and financing agreements, accumulated amortization	$ 2,591		4,815
Fulfillment Center [Member]
Capital Leased Assets [Line Items]
Capital lease term	20 years
Amount due under capital leases and financing agreements	$ 27,023		27,023
Minimum [Member] | Fulfillment Center [Member]
Capital Leased Assets [Line Items]
Capital lease, prepayment term with no penalty	7 years
Maximum [Member] | Fulfillment Center [Member]
Capital Leased Assets [Line Items]
Capital lease, prepayment term with no penalty	20 years
Taxable Municipal Bonds [Member] | Finance Authority [Member]
Capital Leased Assets [Line Items]
Bond	$ 27,023		$ 27,023