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EMPLOYEE BENEFIT PLANS - Components of Net Periodic Benefit Cost (Credit) (Details) - Pension Plans - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Components of Net Periodic Benefit Cost:        
Service cost $ 193 $ 170 $ 560 $ 498
Interest cost 5,791 5,345 16,924 15,774
Expected return on plan assets (6,408) (6,721) (18,757) (19,797)
Amortization of:        
Prior service cost 315 138 931 402
Net actuarial loss 2,070 2,295 6,187 5,828
Net periodic benefit cost $ 1,961 $ 1,227 $ 5,845 $ 2,705