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EMPLOYEE BENEFITS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 28, 2018
Sep. 29, 2017
Sep. 30, 2016
Retirement Benefits [Abstract]      
Unrecognized loss amortization $ 330    
Aggregate accumulated benefit obligation 26,831 $ 28,472  
Aggregate fair value of plan assets 25,971 20,802  
Defined benefit pension plans 184    
Actuarial gain (loss) 1,633 (795) $ 3,152
Deferred compensation liability 17,477 14,932  
Expense attributable to the defined contribution programs $ 1,321 $ 1,189 $ 1,126