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Valuation And Qualifying Accounts (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Oct. 03, 2014
Sep. 27, 2013
Sep. 28, 2012
Allowance For Doubtful Accounts [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year $ 3,759 $ 4,172 $ 3,076
Additions Charged to Costs and Expenses 288 769 1,558
Less Deductions 1,382 1,182 462
Balance at End of Year 2,665 3,759 4,172
Reserves For Inventory Valuation [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 4,015 5,679 6,405
Additions Charged to Costs and Expenses 1,043 1,269 2,307
Less Deductions 1,108 2,933 3,033
Balance at End of Year 3,950 4,015 5,679
Valuation Of Deferred Tax Assets [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 9,479 13,299 14,300
Additions Charged to Costs and Expenses 668 1,262 1,461
Less Deductions 1,413 5,082 2,462
Balance at End of Year 8,734 9,479 13,299
Reserves For Sales Returns [Member]
      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Year 1,129 1,367 1,484
Additions Charged to Costs and Expenses 2,553 1,857 1,995
Less Deductions 2,254 2,095 2,112
Balance at End of Year $ 1,428 $ 1,129 $ 1,367