EMPLOYEE RETIREMENT PLANS - Schedule of net periodic pension cost (Details)	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
Employee Retirement Plans
Long-term rate of return on plan assets	6.75%	6.75%
Defined Benefit Pension Plan
Employee Retirement Plans
Discount rate for projected benefit obligation	5.65%	5.15%
Discount rate for determining interest cost	5.34%	5.08%
Long-term rate of return on plan assets	6.75%	6.75%
Supplemental Pension Plan
Employee Retirement Plans
Discount rate for projected benefit obligation	5.65%	5.16%
Discount rate for determining interest cost	5.39%	5.08%