Note 10 - Income Taxes - Deferred Tax Asset and Liability Components (Details) - USD ($)	Sep. 28, 2024	Sep. 30, 2023
Defined benefit plans	$ 2,765,000	$ 2,551,000
Accrued expenses and asset reserves	1,406,000	2,392,000
Stock-based compensation	1,423,000	1,288,000
R & E Capitalization	226,000	125,000
Operating lease liability	378,000	434,000
State net operating loss carryforwards and tax credits	3,000	158,000
Valuation allowance	(149,000)	(3,000)
Deferred tax assets	6,052,000	6,945,000
Plant and equipment	(15,090,000)	(12,143,000)
Prepaid insurance	(1,240,000)	(1,123,000)
Right of use assets	(381,000)	(435,000)
Goodwill	(976,000)	(787,000)
Deferred tax liabilities	(17,687,000)	(14,488,000)
Net deferred tax liability	$ (11,635,000)	$ (7,543,000)

Amount of deferred tax liability attributable to taxable temporary differences.

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