Note C - Investment Securities (Details) - Summary of Held to Maturity Securities (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 28, 2013	Sep. 29, 2012
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 2,256	$ 26,212
Gross Unrealized Gains		126
Gross Unrealized Losses	50
Fair Market Value	2,206	26,338
Amortized Cost	109,891
Gross Unrealized Gains	254
Gross Unrealized Losses	2,481
Fair Market Value	107,664
US Government Corporations and Agencies Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	2,000	24,998
Gross Unrealized Gains		126
Gross Unrealized Losses	50
Fair Market Value	1,950	25,124
Certificates of Deposit [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	256	1,214
Fair Market Value	256	1,214
Mutual Funds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	109,891
Gross Unrealized Gains	254
Gross Unrealized Losses	2,481
Fair Market Value	$ 107,664

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

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

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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.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-02.2)

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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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-Publisher FASB

-Name Accounting Standards Codification

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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 gain before loss on investments in held-to-maturity securities.

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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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