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PENSION PLAN - Defined Benefit Plan Activity (Details) - Pension Plan - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Change in benefit obligation      
Benefit obligation at beginning of year $ 12,715 $ 11,435  
Interest cost 313 365 $ 392
Actuarial loss 143 (54)  
Assumption changes (649) 1,255  
Benefits paid (292) (286)  
Benefit obligation at end of year 12,230 12,715 11,435
Change in plan assets:      
Fair value of plan assets at beginning of year 7,096 6,165  
Actual return on plan assets 952 511  
Employer contribution 3,835 706  
Benefits paid (292) (286)  
Fair value of plan assets at end of year 11,591 7,096 $ 6,165
Funded status (639) (5,619)  
Unrecognized net actuarial loss 5,314 6,591  
Prepaid pension cost recognized 4,675 972  
Accumulated benefit obligation $ 12,230 $ 12,715