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POSTRETIREMENT BENEFITS (plan assets) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Postretirement benefits [Line Items]    
Postretirement benefit plan, plan assets [Extensible List] Postretirement benefit plan [Member] Postretirement benefit plan [Member]
Allocation of plan assets 100.00% 100.00%
Fair value of plan assets $ 138,134 $ 130,914
Quoted prices in active markets for identical assets (Level 1) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
Significant other observable inputs (Level 2) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 138,134 130,914
Significant unobservable inputs (Level 3) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
Investments measured at net asset value [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets $ 0 $ 0
U.S. corporate debt securities [Member]    
Postretirement benefits [Line Items]    
Allocation of plan assets 55.00% 54.00%
Fair value of plan assets $ 76,628 $ 71,225
U.S. corporate debt securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
U.S. corporate debt securities [Member] | Significant other observable inputs (Level 2) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 76,628 71,225
U.S. corporate debt securities [Member] | Significant unobservable inputs (Level 3) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
U.S. corporate debt securities [Member] | Investments measured at net asset value [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets $ 0 $ 0
International equity securities [Member]    
Postretirement benefits [Line Items]    
Allocation of plan assets 20.00% 20.00%
Target allocation of plan assets 20.00%  
Fair value of plan assets $ 27,356 $ 26,441
International equity securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
International equity securities [Member] | Significant other observable inputs (Level 2) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 27,356 26,441
International equity securities [Member] | Significant unobservable inputs (Level 3) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
International equity securities [Member] | Investments measured at net asset value [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets $ 0 $ 0
U,S, large capitalization equity securities [Member]    
Postretirement benefits [Line Items]    
Allocation of plan assets 17.00% 18.00%
Target allocation of plan assets 17.00%  
Fair value of plan assets $ 23,754 $ 23,143
U,S, large capitalization equity securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
U,S, large capitalization equity securities [Member] | Significant other observable inputs (Level 2) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 23,754 23,143
U,S, large capitalization equity securities [Member] | Significant unobservable inputs (Level 3) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
U,S, large capitalization equity securities [Member] | Investments measured at net asset value [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets $ 0 $ 0
Mortgage-backed securities [Member]    
Postretirement benefits [Line Items]    
Allocation of plan assets 5.00% 5.00%
Fair value of plan assets $ 6,939 $ 6,540
Mortgage-backed securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
Mortgage-backed securities [Member] | Significant other observable inputs (Level 2) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 6,939 6,540
Mortgage-backed securities [Member] | Significant unobservable inputs (Level 3) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
Mortgage-backed securities [Member] | Investments measured at net asset value [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets $ 0 $ 0
U.S. small and mid-capitalization equity securities [Member]    
Postretirement benefits [Line Items]    
Allocation of plan assets 3.00% 3.00%
Target allocation of plan assets 3.00%  
Fair value of plan assets $ 3,457 $ 3,565
U.S. small and mid-capitalization equity securities [Member] | Quoted prices in active markets for identical assets (Level 1) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
U.S. small and mid-capitalization equity securities [Member] | Significant other observable inputs (Level 2) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 3,457 3,565
U.S. small and mid-capitalization equity securities [Member] | Significant unobservable inputs (Level 3) [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets 0 0
U.S. small and mid-capitalization equity securities [Member] | Investments measured at net asset value [Member]    
Postretirement benefits [Line Items]    
Fair value of plan assets $ 0 $ 0
Fixed income securities [Member]    
Postretirement benefits [Line Items]    
Target allocation of plan assets 60.00%