Note C - Investment Securities (Details) - Summary of Held to Maturity Securities (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 27, 2014	Sep. 28, 2013
Note C - Investment Securities (Details) - Summary of Held to Maturity Securities [Line Items]
Amortized Cost	$ 2,000	$ 2,256
Unrealized Losses	13	50
Fair Market Value	1,987	2,206
Amortized Cost	129,473	109,891
Unrealized Gains	760	254
Unrealized Losses	2,116	2,481
Fair Market Value	128,117	107,664
US Government Corporations and Agencies Securities [Member]
Note C - Investment Securities (Details) - Summary of Held to Maturity Securities [Line Items]
Amortized Cost	2,000	2,000
Unrealized Losses	13	50
Fair Market Value	1,987	1,950
Mutual Funds [Member]
Note C - Investment Securities (Details) - Summary of Held to Maturity Securities [Line Items]
Amortized Cost	129,473	109,891
Unrealized Gains	760	254
Unrealized Losses	2,116	2,481
Fair Market Value	128,117	107,664
Certificates of Deposit [Member]
Note C - Investment Securities (Details) - Summary of Held to Maturity Securities [Line Items]
Amortized Cost		256
Fair Market Value		$ 256

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

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Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities.

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Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities.

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Amount before other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity.

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Fair value of investments in debt securities classified as held-to-maturity.

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Amount of unrecognized loss before gain on investments in held-to-maturity securities. Excludes write-down for other than temporary impairment (OTTI).

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