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EMPLOYEE BENEFIT PLANS - Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Pension Benefits (a)      
Defined Benefit Plan Disclosure [Line Items]      
Service cost $ 0 $ 0 $ 0
Interest cost 3,374 2,434 2,228
Expected return on plan assets (3,439) (3,486) (3,746)
Amortization of losses 6 738 1,154
Settlement expense 2,036 0 0
Net periodic benefit cost (credit) 1,977 (314) (364)
Postretirement      
Defined Benefit Plan Disclosure [Line Items]      
Service cost 4 7 8
Interest cost 70 51 45
Expected return on plan assets 0 0 0
Amortization of losses 0 15 20
Settlement expense 0 0 0
Net periodic benefit cost (credit) $ 74 $ 73 $ 73