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Note 7 - Employee Benefit Plans (Details) - Weighted average assumptions used in calculating the Company’s projected benefit obligation | Aug. 31, 2013 | Aug. 25, 2012 | Aug. 27, 2011
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Pension Plans [Member] |  |  |
Note 7 - Employee Benefit Plans (Details) - Weighted average assumptions used in calculating the Company’s projected benefit obligation [Line Items] |  |  |
Discount rate | 4.30% | 3.30% |
Rate of compensation increase |  |  |
Supplemental Executive Retirement Plan [Member] |  |  |
Note 7 - Employee Benefit Plans (Details) - Weighted average assumptions used in calculating the Company’s projected benefit obligation [Line Items] |  |  |
Discount rate | 4.60% | 3.60% |
Rate of compensation increase | 5.00% | 5.00% | 5.00%

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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Definition Expected rate of compensation increases (for pay-related plans). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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