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EMPLOYEE BENEFITS (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Sep. 27, 2019
Sep. 28, 2018
Sep. 29, 2017
Retirement Benefits [Abstract]      
Unrecognized loss amortization $ 420    
Aggregate accumulated benefit obligation, plan assets in excess of benefit obligation 29,018 $ 25,504  
Aggregate fair value of plan assets, plan assets in excess of benefit obligation 30,356 25,971  
Aggregate accumulated benefit obligation 1,230 1,327  
Aggregate fair value of plan assets 0 0  
Defined benefit pension plans 172    
Actuarial gain (loss) (4,320) 1,633 $ 795
Deferred compensation liability 19,092 17,477  
Expense attributable to the defined contribution programs $ 1,422 $ 1,321 $ 1,189