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Note 14 - Segment Reporting (Details) - Summary of Revenues and Income Before Income Taxes by Geographic Area (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Aug. 30, 2014 | May 31, 2014 | Mar. 01, 2014 | Nov. 30, 2013 | Aug. 31, 2013 | May 25, 2013 | Feb. 23, 2013 | Nov. 24, 2012 | Aug. 30, 2014 | Aug. 31, 2013 | Aug. 25, 2012
Note 14 - Segment Reporting (Details) - Summary of Revenues and Income Before Income Taxes by Geographic Area [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 351,988 | $ 352,238 | $ 343,967 | $ 346,704 | $ 352,876 | $ 335,764 | $ 334,306 | $ 332,569 | $ 1,394,897 |  | $ 1,355,515 |  | $ 1,256,289 |
Income before income taxes | 47,657 | 50,114 | 41,224 | 56,356 | 48,137 | 45,831 | 43,215 | 50,426 | 195,351 |  | 187,609 |  | 150,734 |
UNITED STATES |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 14 - Segment Reporting (Details) - Summary of Revenues and Income Before Income Taxes by Geographic Area [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,258,609 |  | 1,223,534 |  | 1,144,753 |
Income before income taxes |  |  |  |  |  |  |  |  | 182,354 |  | 171,899 |  | 134,651 |
Europe and Canada [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 14 - Segment Reporting (Details) - Summary of Revenues and Income Before Income Taxes by Geographic Area [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 136,288 | [1] | 131,981 | [1] | 111,536 | [1]
Europe, Canada, Mexico and Nicaragua [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note 14 - Segment Reporting (Details) - Summary of Revenues and Income Before Income Taxes by Geographic Area [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income before income taxes |  |  |  |  |  |  |  |  | $ 12,997 | [1] | $ 15,710 | [1] | $ 16,083 | [1]
[1] | No country accounts for greater than 10% of total long-lived assets, revenues or income before income taxes

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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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