Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 29, 2012 Allowance For Losses On Accounts Receivable [Member]	Oct. 01, 2011 Allowance For Losses On Accounts Receivable [Member]	Oct. 02, 2010 Allowance For Losses On Accounts Receivable [Member]	Sep. 29, 2012 Valuation Allowance On Deferred Income Tax Assets [Member]	Oct. 01, 2011 Valuation Allowance On Deferred Income Tax Assets [Member]	Oct. 03, 2009 Valuation Allowance On Deferred Income Tax Assets [Member]
Balance at beginning of period	$ 3,256	$ 1,400	$ 1,000	$ 5,116	$ 2,548	$ 2,548
Additions charged to costs and expenses	259	1,863	550	21,971	1,238
Additions charged to other accounts					1,330
Deductions	2,504	7	150
Balance at end of period	$ 1,011	$ 3,256	$ 1,400	$ 27,087	$ 5,116	$ 2,548