Note 13 - Investments - Held-to-maturity Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 25, 2023	Sep. 24, 2022
Due in one year or less, amortized cost	$ 0	$ 4,011
Due in one year or less, fair market value	0	3,990
Due after one year through five years, amortized cost	0	0
Due after one year through five years, fair market value	0	0
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	0	4,011
Held-to-maturity securities, fair market value	0	3,990
Marketable securities held to maturity	0	4,011
Less current portion, fair market value	0	3,990
Long term held to maturity securities, amortized cost	0	0
Long term held to maturity securities, fair market value	$ 0	$ 0

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

No definition available.

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

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No definition available.

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as current.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in second through fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Amount, before allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity), classified as noncurrent.

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