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EMPLOYEE BENEFIT PLANS - Components of Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Components of net periodic benefit cost (credit)      
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Interest Cost, Statement of Income or Comprehensive Income Other, net Other, net Other, net
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Amortization of Prior Service Cost (Credit), Statement of Income or Comprehensive Income Other, net Other, net Other, net
Pension settlement expense     $ 89
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income Other, net Other, net Other, net
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Amortization of Gain (Loss), Statement of Income or Comprehensive Income Other, net Other, net Other, net
Supplemental Benefit Plan      
Components of net periodic benefit cost (credit)      
Interest cost $ 7 $ 4 $ 9
Pension settlement expense     89
Amortization of net actuarial (gain) loss 8 9 8
Net periodic benefit cost (credit) 15 13 106
Postretirement Health Benefit Plan      
Components of net periodic benefit cost (credit)      
Service cost 156 192 187
Interest cost 441 427 576
Amortization of prior service credit     (1)
Amortization of net actuarial (gain) loss (765) (548) (597)
Net periodic benefit cost (credit) $ (168) $ 71 $ 165