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Employee Benefits (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2016
Oct. 02, 2015
Oct. 03, 2014
Defined Benefit Plan Disclosure [Line Items]      
Amount of Unrecognized Loss Amortization Expected to be Recognized $ 710    
Aggregate Accumulated Benefit Obligation, Plans With Benefit Obligations in Excess of Plan Assets 29,449 $ 26,212  
Aggregate Fair Falue of Plan Assets, Plans With Benefit Obligations in Excess of Plan Assets 17,793 17,020  
Anticipated Contributions to Defined Benefit Plans Through Next Year 685    
Actuarial Loss Due to Impact of the Change in Discount Rates $ 3,152   $ 2,640
Actuarial Gain Due To Impact Of Change In Discount Rate   390  
Actuarial Target Rate of Return 7.50%    
Target Return Above the Rate of Inflation 4.00%    
Deferred Compensation Liability $ 12,637 11,441  
Expense Attributable to the Defined Contribution Programs $ 1,126 $ 1,093 $ 1,061
Minimum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Percentage of Equity Securities as a Component of the Mutual Fund 70.00%    
Maximum [Member]      
Defined Benefit Plan Disclosure [Line Items]      
Investment Horizon Over Which the Investment Objectives Are Expected to be Met 5 years    
Percentage of Equity Securities as a Component of the Mutual Fund 75.00%