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EMPLOYEE RELATED LIABILITIES (Schedule of Components of Change in Benefit Obligation, Change in Plan Assets and Funded Status) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Postretirement Medicare Plan [Member]      
Change in medical plan related benefit obligation:      
Benefit obligation at beginning of period $ 1,882 $ 1,689 $ 1,628
Service cost 5 6 7
Interest cost 52 57 72
Benefits paid (4) (16) (17)
Change in medical plan provisions 0 0 0
Actuarial loss (gain) (23) 146 (1)
Benefit obligation end of period 1,912 1,882 1,689
Change in plan assets:      
Fair value of plan assets at beginning of period 0 0 0
Employer contribution 4 16 16
Benefits paid (4) (16) (16)
Fair value of plan assets at end of period 0 0 0
Funded status (1,912) (1,882) (1,689)
Pension Plan [Member]      
Change in medical plan related benefit obligation:      
Benefit obligation at beginning of period 23,467 21,908 18,979
Interest cost 575 687 817
Benefits paid (778) (737) (688)
Change in medical plan provisions 0 0 0
Actuarial loss (gain) (1,183) 1,608 2,800
Benefit obligation end of period 22,081 23,467 21,908
Change in plan assets:      
Fair value of plan assets at beginning of period 25,985 24,454 22,669
Actual return on plan assets 616 2,337 2,544
Employer contribution 0 0 0
Expenses paid (73) (69) (71)
Benefits paid (778) (736) (688)
Fair value of plan assets at end of period 25,750 25,985 24,454
Funded status $ 3,669 $ 2,518 $ 2,546