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PENSION PLAN AND OTHER BENEFIT PLANS - Changes in Projected Benefit Obligation and Plan Assets, and Funded Status (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Plan    
Change in projected benefit obligation:    
Benefit obligation at beginning of year $ 42,781 $ 39,886
Service cost 0 0
Interest cost 1,084 1,300
Actuarial (gain) loss (1,300) 3,735
Curtailments 0 0
Settlements 0 0
Benefits paid (2,161) (2,140)
Benefit obligation at end of year 40,404 42,781
Change in plan assets:    
Fair value of plan assets at beginning of year 50,134 45,557
Actual return on plan assets 5,014 6,717
Employer contributions 0 0
Settlements 0 0
Benefits paid (2,161) (2,140)
Fair value of plan assets at end of year 52,987 50,134
Funded status of plan 12,583 7,353
Defined Benefit Health Care Plan    
Change in projected benefit obligation:    
Benefit obligation at beginning of year 249 332
Service cost 0 0
Interest cost 6 9
Participant contributions 20 35
Amendments 0 0
Actuarial (gain) loss (37) (57)
Benefits paid (44) (70)
Benefit obligation at end of year 194 249
Change in plan assets:    
Fair value of plan assets at beginning of year 0 0
Employer contributions 24 35
Participant contributions 20 35
Benefits paid (44) (70)
Fair value of plan assets at end of year 0 0
Funded status of plan (194) (249)
Executive Supplemental Pension Plan    
Change in projected benefit obligation:    
Benefit obligation at beginning of year 1,251 1,232
Service cost 0 0
Interest cost 31 39
Actuarial (gain) loss 0 89
Benefits paid (109) (109)
Benefit obligation at end of year 1,173 1,251
Change in plan assets:    
Fair value of plan assets at beginning of year 0 0
Employer contributions 109 109
Benefits paid (109) (109)
Fair value of plan assets at end of year 0 0
Funded status of plan $ (1,173) $ (1,251)