Summary Of Significant Accounting Policies (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Thousands			1 Months Ended	12 Months Ended
		Aug. 19, 2016 USD ($) $ / shares shares	Aug. 31, 2016 USD ($) $ / shares shares	Sep. 03, 2016 USD ($) segment customer item	Aug. 29, 2015 USD ($)	Aug. 30, 2014 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Active customer accounts | customer				366,000
Active customer qualification, number of purchases within twelve months | item				1
Increase in goodwill				$ 455
Impairment of intangible assets				397,000
Amortization expense				14,478	$ 16,580	$ 16,851
Impairment loss				0	0	0
Deferred principal catalog costs				$ 5,174	4,948
Period deferred principal catalog costs remain the most current source of sales				1 year
Advertising costs				$ 19,242	24,101	20,799
Shipping and handling costs				118,174	123,900	119,796
Expenditures for property, plant and equipment				87,930	51,405	70,617
Rental payments				2,110	2,318	2,297
Purchase of treasury stock, Shares | shares			4,973
Share price | $ / shares			$ 72.50
Purchases of treasury stock				383,798	33,414	$ 191,359
Current maturities of long-term debt	[1]			267,050	213,165
Unrecognized tax benefit that would affect effective tax rate				$ 4,432	4,693
Number of reportable segments | segment				1
Class A Common Stock [Member]
Summary Of Significant Accounting Policies [Line Items]
Purchases of treasury stock				$ 362,153
Class A Common Stock [Member] | Purchases From Class B Holders [Member]
Summary Of Significant Accounting Policies [Line Items]
Purchase of treasury stock, Shares | shares		1,152
Share price | $ / shares		$ 72.50
Purchases of treasury stock		$ 83,524
Accounting Standards Update 2015-03 [Member] | Restatement Adjustment [Member]
Summary Of Significant Accounting Policies [Line Items]
Debt issuance cost				$ (1,020)
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Original manufacturers warranty period				30 days
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Warranty period				1 year
Original manufacturers warranty period				90 days
Sales Revenue, Net [Member] | Geographic Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage				3.00%
Sid Tool Co., Inc. [Member]
Summary Of Significant Accounting Policies [Line Items]
Expenditures for property, plant and equipment			$ 33,650
Leasehold Improvements And Buildings [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment estimated useful life				3 years
Leasehold Improvements And Buildings [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment estimated useful life				40 years
Furniture, Fixtures And Equipment [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment estimated useful life				3 years
Furniture, Fixtures And Equipment [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Property, plant and equipment estimated useful life				20 years
Trademark [Member]
Summary Of Significant Accounting Policies [Line Items]
Increase related to new trademarks				$ 112	$ 212

[1] Net of unamortized debt issuance costs expected to be amortized in the next twelve months.