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Note 11 - Investment Securities - Held-to-maturity Securities by Contractual Maturity (Details) - USD ($)	Mar. 26, 2022	Sep. 25, 2021
Due in one year or less, amortized cost	$ 4,530,000	$ 7,980,000
Due in one year or less, fair market value	4,473,000	8,080,000
Due after one year through five years, amortized cost		4,047,000
Due after one year through five years, fair market value		4,052,000
Total held to maturity securities, amortized cost	4,530,000	12,027,000
Total held to maturity securities, fair market value	4,473,000	12,132,000
Less current portion, amortized cost	4,530,000	7,980,000
Less current portion, fair market value	4,473,000	8,080,000
Long term held to maturity securities, amortized cost	$ 0	4,047,000
Long term held to maturity securities, fair market value		$ 4,052,000

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The current portion of fair value of investments in debt securities classified as held-to-maturity.

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