Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($) $ in Thousands	Sep. 02, 2017	Sep. 03, 2016
Income Taxes [Abstract]
Deferred tax liabilities: Depreciation	$ (56,382)	$ (53,580)
Deferred tax liabilities: Deferred catalog costs	(1,079)	(1,347)
Deferred tax liabilities: Goodwill	(103,218)	(88,607)
Deferred tax liabilities	(160,679)	(143,534)
Deferred tax assets: Accounts receivable	4,441	4,089
Deferred tax assets: Inventory	9,794	9,995
Deferred tax assets: Deferred compensation	1,280	1,710
Deferred tax assets: Stock based compensation	9,140	9,813
Deferred tax assets: Intangible amortization	9,517	11,933
Deferred tax assets: Other accrued expenses/reserves	17,445	9,087
Deferred tax assets	51,617	46,627
Net Deferred Tax Liabilities	$ (109,062)	$ (96,907)