EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Liabilities in Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Pension Plan
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS
Accrued interest and other liabilities	$ 39	$ 50
Other Postretirement Benefits Plan
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS
Accrued interest and other liabilities	$ 586	$ 1,013