Valuation And Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Oct. 02, 2015	Oct. 03, 2014	Sep. 27, 2013
Allowance For Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	$ 2,665	$ 3,759	$ 4,172
Additions Charged to Costs and Expenses	292	288	769
Less Deductions	628	1,382	1,182
Balance at End of Year	2,329	2,665	3,759
Reserves For Inventory Valuation [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	3,950	4,015	5,679
Additions Charged to Costs and Expenses	2,123	1,043	1,269
Less Deductions	1,194	1,108	2,933
Balance at End of Year	4,879	3,950	4,015
Valuation Of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	8,734	9,479	13,299
Additions Charged to Costs and Expenses	2,602	668	1,262
Less Deductions	1,550	1,413	5,082
Balance at End of Year	9,786	8,734	9,479
Reserves For Sales Returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Year	1,428	1,129	1,367
Additions Charged to Costs and Expenses	3,139	2,553	1,857
Less Deductions	2,622	2,254	2,095
Balance at End of Year	$ 1,945	$ 1,428	$ 1,129