Income Taxes (Components Of Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Aug. 31, 2013	Sep. 01, 2012
Income Taxes [Abstract]
Deferred tax liabilities: Depreciation	$ (46,339)	$ (41,812)
Deferred tax liabilities: Deferred catalog costs	(1,730)	(1,779)
Deferred tax liabilities: Goodwill	(44,751)	(35,841)
Deferred tax liabilities	(92,820)	(79,432)
Deferred tax assets: Accounts receivable	2,254	2,030
Deferred tax assets: Inventory	7,345	5,703
Deferred tax assets: Deferred compensation	1,509	1,272
Deferred tax assets: Stock based compensation	10,888	9,981
Deferred tax assets: Intangible amortization	9,983	7,027
Deferred tax assets: Other	5,792	5,705
Deferred tax assets	37,771	31,718
Net Deferred Tax Liabilities	$ (55,049)	$ (47,714)