Business And 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. 02, 2017 USD ($) store warehouse	Sep. 03, 2016 USD ($)	Aug. 29, 2015 USD ($)	Dec. 03, 2016 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Number of branch offices | store			93
Number of customer fulfillment centers | warehouse			12
Impairment of intangible assets			$ 17	$ 397
Amortization expense			8,223	14,478	$ 16,580
Impairment loss			0	0	0
Deferred principal catalog costs			$ 4,778	5,174
Period deferred principal catalog costs remain the most current source of sales			1 year
Advertising costs			$ 16,289	19,242	24,101
Shipping and handling costs			119,979	118,174	123,900
Expenditures for property, plant and equipment			46,548	87,930	51,405
Rental payments				2,110	2,318
Repurchases of common stock, Shares | shares		4,973
Share price | $ / shares		$ 72.50
Purchases of treasury stock			49,182	383,798	$ 33,414
Unrecognized tax benefit that would affect effective tax rate			5,689	4,432
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]
Repurchases of common 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)
Accounting Standards Update 2015-17 [Member]
Summary Of Significant Accounting Policies [Line Items]
Long-term liabilities						$ 46,627
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] | Sales Channel Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage			60.10%
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			$ 12,980	$ 112