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Note 11 - Held-to-maturity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 27, 2021	Sep. 26, 2020
Due in one year or less, amortized cost	$ 21,379	$ 51,151
Due in one year or less, fair market value	21,640	51,815
Due after one year through five years, amortized cost	7,580	16,927
Due after one year through five years, fair market value	7,685	17,246
Due after five years through ten years, amortized cost	0	0
Due after five years through ten years, fair market value	0	0
Total held to maturity securities, amortized cost	28,959	68,078
Total held to maturity securities, fair market value	29,325	69,061
Less current portion, amortized cost	21,379	51,151
Less current portion, fair market value	21,640	51,815
Long term held to maturity securities, amortized cost	7,580	16,927
Long term held to maturity securities, fair market value	$ 7,685	$ 17,246

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

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