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Note 11 - Employee Benefit Plans (Details) - SERP Plan Valuation Assumptions (Supplemental Employee Retirement Plan [Member]) | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 29, 2012
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Supplemental Employee Retirement Plan [Member] |  |  |
Assumptions at year-end: |  |  |
Discount rate | 4.25% | 4.75% | 4.00%
Rate of increase in compensation levels | 3.00% | 3.00% | 3.00%

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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=35743120&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=35743120&loc=d3e1928-114920 + Details
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