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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 |  |

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