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EMPLOYEE BENEFIT PLANS (Tables)
12 Months Ended
Dec. 31, 2025
EMPLOYEE BENEFIT PLANS  
Schedule of changes in accumulated postretirement benefit obligation

December 31,

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

Benefit obligation, beginning of year

$

9,296

$

10,317

Service cost

 

113

 

144

Interest cost

 

486

 

474

Actuarial (gain)/loss

 

195

 

(1,100)

Benefits paid

 

(573)

 

(539)

Benefit obligation, end of year

$

9,517

$

9,296

Schedule of net periodic postretirement benefit cost (income)

  ​ ​ ​

2025

  ​ ​ ​

2024

  ​ ​ ​

2023

  ​ ​ ​

Service cost—benefits attributed to service during the period

$

113

$

144

$

142

Interest cost on the accumulated postretirement benefit obligation

 

486

 

474

 

477

Net amortization

 

(820)

 

(639)

 

(758)

Net periodic postretirement benefit cost (income)

$

(221)

$

(21)

$

(139)