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Fair Value Measurements (Effect of Changes in the Fair Value of Financial Instruments) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jan. 01, 2016
Jan. 02, 2015
Rabbi Trust Assets [Member]    
Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Line Items]    
Changes in fair value, loss (income) $ 63 $ 118