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POSTRETIREMENT BENEFITS (net periodic benefit income and actuarial assumptions) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Net periodic benefit income      
Interest cost $ 1,742 $ 1,985 $ 1,121
Postretirement plans, interest cost [Extensible Enumeration] Other income, net Other income, net Other income, net
Expected return on plan assets $ (8,395) $ (7,320) $ (7,462)
Postretirement plans, expected return on plan assets [Extensible Enumeration] Other income, net Other income, net Other income, net
Amortization of prior service credit $ (1,421) $ (1,421) $ (1,421)
Postretirement plans, amortization of prior service credit [Extensible Enumeration] Other income, net Other income, net Other income, net
Amortization of net actuarial losses $ 1,334 $ 2,273 $ 900
Postretirement plans, amortization of net actuarial losses [Extensible Enumeration] Other income, net Other income, net Other income, net
Net periodic benefit income $ (6,740) $ (4,483) $ (6,862)
Participants under age 65 [Member]      
Health care cost trend rates      
Health care cost trend rate assumed for next year 6.00% 6.60% 6.60%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.50% 4.50% 4.50%
Year that the rate reaches the ultimate trend rate 2030 2030 2030
Participants age 65 and older [Member]      
Health care cost trend rates      
Health care cost trend rate assumed for next year 6.50% 7.30% 7.30%
Rate to which the cost trend rate is assumed to decline (the ultimate trend rate) 4.50% 4.50% 4.50%
Year that the rate reaches the ultimate trend rate 2030 2030 2030
Postretirement benefit plan [Member]      
Net periodic benefit income      
Interest cost $ 1,639 $ 1,874  
Actuarial assumptions      
Discount rate, benefit obligation 5.48% 4.89%  
Discount rate, net periodic benefit income 4.89% 5.09% 2.61%
Expected return on plan assets 6.50% 6.25% 5.25%
Pension plan [Member]      
Net periodic benefit income      
Interest cost $ 103 $ 111  
Actuarial assumptions      
Discount rate, benefit obligation 5.35% 4.80%  
Discount rate, net periodic benefit income 4.80% 5.00% 2.26%