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EMPLOYEE BENEFITS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 29, 2017
Sep. 30, 2016
Oct. 02, 2015
Defined Benefit Plan Disclosure [Line Items]      
Unrecognized loss amortization $ 538    
Aggregate accumulated benefit obligation 28,472 $ 29,449  
Aggregate fair value of plan assets 20,802 17,793  
Defined benefit pension plans 1,151    
Actuarial gain (loss) $ 795 (3,152) $ 390
Actuarial target rate of return 6.50%    
Target return above the rate of inflation 4.00%    
Deferred compensation liability $ 14,932 12,637  
Expense attributable to the defined contribution programs $ 1,189 $ 1,126 $ 1,093
Minimum      
Defined Benefit Plan Disclosure [Line Items]      
Percentage of equity securities as a component of the mutual fund 70.00%    
Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Investment horizon (years) 5 years    
Percentage of equity securities as a component of the mutual fund 75.00%