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EMPLOYEE BENEFIT PLANS (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Pension Plans    
Change in projected benefit obligation:    
Projected benefit obligation at beginning of year $ 5,669 $ 6,353
Service Cost 72 74
Interest cost 228 217
Actuarial loss (gain) 542 (503)
Benefits paid (333) (323)
Settlements (330) (149)
Projected benefit obligation at end of year 5,848 5,669
Accumulated benefit obligation 5,848 5,669
Change in fair value of plan assets:    
Fair value of plan assets at plan beginning of year 5,522 5,446
Actual return on plan assets 940 (359)
Contributions by employer 0 907
Benefits paid (333) (323)
Settlements (330) (149)
Fair value of plan assets at end of year 5,799 5,522
Underfunded status 49 147
Postretirement Benefits    
Change in projected benefit obligation:    
Projected benefit obligation at beginning of year 3,422 3,693
Service Cost 38 40
Interest cost 142 130
Participant contributions 0 46
Actuarial loss (gain) 565 (391)
Benefits paid (128) (96)
Projected benefit obligation at end of year 4,039 3,422
Change in fair value of plan assets:    
Fair value of plan assets at plan beginning of year 0 0
Contributions by employer 128 50
Benefits paid (128) (96)
Contributions by participant 0 46
Fair value of plan assets at end of year $ 0 $ 0