Valuation And Qualifying Accounts (Schedule Of Valuation And Qualifying Accounts) (Details) (USD $) In Thousands	12 Months Ended
	Oct. 01, 2011	Oct. 02, 2010	Oct. 03, 2009
Allowance For Losses On Accounts Receivable [Member]
Balance at beginning of period	$ 1,400	$ 1,000	$ 2,500
Additions charged to costs and expenses	1,863	550	942
Additions charged to other accounts
Deductions	7	150	2,442
Balance at end of period	3,256	1,400	1,000
Valuation Allowance On Deferred Income Tax Assets [Member]
Balance at beginning of period	2,548	2,548	2,607
Additions charged to costs and expenses	1,238		61
Additions charged to other accounts	1,330
Deductions			120
Balance at end of period	$ 5,116	$ 2,548	$ 2,548