Debt And Capital Lease Obligations (Capital Lease And Finance Obligations) (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 03, 2016	Nov. 28, 2015	Sep. 03, 2016
Capital Leased Assets [Line Items]
Amount due under capital leases and financing agreements	$ 28,613		$ 28,268
New capital leases			1,321
Financing obligations for certain information technology equipment	739	$ 453	453
Property and equipment acquired under capital leases and financing agreements	29,684		30,298
Property and equipment acquired under capital leases and financing agreements, accumulated amortization	$ 2,540		2,878
Fulfillment Center [Member]
Capital Leased Assets [Line Items]
Capital lease term	20 years
Amount due under capital leases and financing agreements	$ 27,022		$ 27,022
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