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Note 10 - Income Taxes (Details) - Deferred Tax Asset and Liability Components (USD $) | Sep. 27, 2014 | Sep. 28, 2013
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Deferred tax assets: |  |
Defined benefit plans | $ 3,419,000 | $ 3,245,000
Accrued expenses and asset reserves | 2,782,000 | 2,206,000
Stock-based compensation | 1,804,000 | 1,560,000
State net operating loss carryforwards and tax credits | 908,000 | 1,441,000
Goodwill, amortizable for tax purposes | 870,000 | 986,000
Valuation allowance | (547,000) | (730,000)
Deferred tax assets | 9,236,000 | 8,708,000
Deferred tax liabilities: |  |
Plant and equipment | (12,654,000) | (12,607,000)
Prepaid insurance and other reserves | (1,032,000) | (650,000)
Deferred tax liabilities | (13,686,000) | (13,257,000)
Net deferred tax liability | $ (4,450,000) | $ (4,549,000)

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- Definition Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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