EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS - Items Included in Accumulated Other Comprehensive Income (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Pension Plan
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS
Prior service cost	$ 0	$ 0
Net actuarial loss (gain)	131,000	139,000
Total	131,000	139,000
Amortization of net actuarial loss in 2024	5,000
Accumulated benefit obligation	938,000	896,000
Other Postretirement Benefits Plan
EMPLOYEE AND POSTRETIREMENT BENEFIT PLANS
Prior service cost	(56,000)	(124,000)
Net actuarial loss (gain)	(486,000)	(573,000)
Total	(542,000)	$ (697,000)
Amortization of net actuarial loss in 2024	83,000
Adjustment in unrecognized prior service cost	413,000
Curtailment adjustment	469,000
Reduction in prior service cost in 2024	$ 8,000