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EMPLOYEE BENEFIT PLANS - Schedule of Amounts in Accumulated Other Comprehensive Income That Have Not Yet Been Recognized as Components of Net Periodic Benefit Cost (Details) - Postretirement Benefits - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Net prior service cost $ 1,159 $ 1,242 $ 1,325
Net actuarial (gain)/loss (812) 615 869
Total recognized in accumulated other comprehensive income $ 347 $ 1,857 $ 2,194