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Note 11 (Details) - Summary of Securities (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Mar. 29, 2014	Sep. 28, 2013
Note 11 (Details) - Summary of Securities [Line Items]
Amortized Cost - Held To Maturity	$ 2,000	$ 2,256
Gross Unrealized Losses - Held To Maturity	32	50
Fair Market Value - Held To Maturity	1,968	2,206
Amortized Cost - Available For Sale	129,538	109,891
Gross Unrealized Gains - Available For Sale	779	254
Gross Unrealized Losses - Available For Sale	1,577	2,481
Fair Market Value - Available For Sale	128,740	107,664
US Government Corporations and Agencies Securities [Member]
Note 11 (Details) - Summary of Securities [Line Items]
Amortized Cost - Held To Maturity	2,000	2,000
Gross Unrealized Losses - Held To Maturity	32	50
Fair Market Value - Held To Maturity	1,968	1,950
Mutual Funds [Member]
Note 11 (Details) - Summary of Securities [Line Items]
Amortized Cost - Available For Sale	129,538	109,891
Gross Unrealized Gains - Available For Sale	779	254
Gross Unrealized Losses - Available For Sale	1,577	2,481
Fair Market Value - Available For Sale	128,740	107,664
Certificates of Deposit [Member]
Note 11 (Details) - Summary of Securities [Line Items]
Amortized Cost - Held To Maturity		256
Fair Market Value - Held To Maturity		$ 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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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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Fair value of investments in debt securities classified as held-to-maturity.

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