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POSTRETIREMENT BENEFITS (obligations and funded status) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Change in benefit obligation      
Interest cost $ 1,742 $ 1,985 $ 1,121
Change in plan assets      
Fair value of plan assets, beginning of year 130,914    
Fair value of plan assets, end of year 138,134 130,914  
Amounts recognized on the consolidated balance sheets      
Other non-current assets 107,524 94,939  
Amounts recognized in accumulated other comprehensive loss      
Unrecognized net actuarial loss (23,332) (29,019)  
Unrecognized prior service credit 5,650 7,071  
Tax effect 1,116 2,124  
Amount recognized in accumulated other comprehensive loss, net of tax (16,566) (19,824)  
Postretirement benefit plan [Member]      
Change in benefit obligation      
Benefit obligation, beginning of year 35,975 39,709  
Interest cost 1,639 1,874  
Net actuarial (gain) loss (3,072) (785)  
Benefits paid from plan assets and company funds (3,932) (4,823)  
Benefit obligation, end of year 30,610 35,975 39,709
Change in plan assets      
Fair value of plan assets, beginning of year 130,914 119,052  
Return on plan assets 9,729 15,241  
Benefits paid (2,509) (3,379)  
Fair value of plan assets, end of year 138,134 130,914 119,052
Funded status 107,524 94,939  
Amounts recognized on the consolidated balance sheets      
Other non-current assets $ 107,524 94,939  
Amounts recognized in accumulated other comprehensive loss      
Amortization period net actuarial loss 12 years    
Pension plan [Member]      
Change in benefit obligation      
Benefit obligation, beginning of year [1] $ 2,289 2,374  
Interest cost 103 111  
Net actuarial (gain) loss 52 128  
Benefits paid from plan assets and company funds (324) (324)  
Benefit obligation, end of year [1] 2,120 2,289 2,374
Change in plan assets      
Fair value of plan assets, beginning of year 0 0  
Fair value of plan assets, end of year 0 0 $ 0
Funded status (2,120) (2,289)  
Amounts recognized on the consolidated balance sheets      
Accrued liabilities 324 324  
Other non-current liabilities $ 1,796 $ 1,965  
[1] The accumulated benefit obligation equals the projected benefit obligation