Debt And Capital Lease Obligations (Capital Lease And Finance Obligations) (Narrative) (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	May. 30, 2015	May. 31, 2014	Aug. 30, 2014
Capital Leased Assets [Line Items]
Amount due under capital leases and financing agreements	$ 28,520		$ 29,564
Capital leases and financing obligations for certain information technology equipment entered into	530	$ 480	1,353
Property and equipment acquired under capital leases and financing agreements	33,853		33,505
Property and equipment acquired under capital leases and financing agreements, accumulated amortization	$ 5,339		3,339
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