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EMPLOYEE BENEFIT PLANS (Benefit Obligation and Plan Assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2022
Jan. 02, 2021
Dec. 28, 2019
Change in plan assets:      
Contribution $ 300    
Pension Plans      
Change in projected benefit obligation:      
Benefit obligation at beginning of period 74,128 $ 68,331  
Interest cost 1,818 2,171 $ 2,432
Actuarial (gain) loss (2,405) 6,666  
Benefits paid (2,666) (3,040)  
Benefit obligation at end of period 70,875 74,128 68,331
Change in plan assets:      
Fair value of plan assets at beginning of year 65,417 61,961  
Actual return on plan assets 5,938 6,496  
Fair value of plan assets at end of year 68,689 65,417 61,961
Defined Benefit Plan, Benefit Obligation, Benefits Paid 2,666 3,040  
Postretirement Benefit      
Change in projected benefit obligation:      
Benefit obligation at beginning of period 2,998 3,311  
Service cost 15 25 21
Interest cost 57 94 123
Actuarial (gain) loss (140) (162)  
Plan participants' contribution 20 9  
Benefit obligation at end of period 2,662 2,998 $ 3,311
Change in plan assets:      
Defined Benefit Plan, Benefit Obligation, Benefits Paid 288 279  
Postretirement Benefit | Other Long Term Liabilities      
Change in projected benefit obligation:      
Benefit obligation at beginning of period 2,700    
Benefit obligation at end of period $ 2,400 $ 2,700