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EMPLOYEE BENEFITS (Pension Plan Assets Measured At Fair Value) (Details) - USD ($)
$ in Thousands
Oct. 02, 2020
Sep. 27, 2019
Sep. 28, 2018
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value $ 32,923 $ 30,356 $ 25,971
Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 7,125 5,370  
Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 25,790 24,955  
Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 8 31 $ 52
Fixed income securities      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 30,391 28,619  
Fixed income securities | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 5,657 4,066  
Fixed income securities | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 24,734 24,553  
Fixed income securities | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 1,468 1,304  
Mutual funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 1,468 1,304  
Mutual funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Mutual funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Money market funds      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 1,056 402  
Money market funds | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Money market funds | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 1,056 402  
Money market funds | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Group annuity contract      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 8 31  
Group annuity contract | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Group annuity contract | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value 0 0  
Group annuity contract | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Pension plan assets measured at fair value $ 8 $ 31