COMPONENTS OF QUARTERLY AND YEAR TO DATE NET PERIODIC BENEFIT COSTS (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Qualified Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost, benefits earned during the period	$ 0	$ 0	$ 0	$ 0
Interest cost on projected benefit obligation	391	383	1,173	1,139
Expected return on plan assets	(524)	(629)	(1,572)	(1,887)
Amortization of unrecognized transition obligation	0	0	0	0
Amortization of unrecognized prior service cost	0	0	0	0
Amortization of unrecognized net loss	0	0	0	0
Net periodic pension benefit	(133)	(246)	(399)	(748)
Supplemental Pension Plan
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost, benefits earned during the period	0	0	0	0
Interest cost on projected benefit obligation	11	11	33	33
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service cost	0	0	0	0
Amortization of unrecognized net loss	3	3	9	9
Net periodic pension benefit	14	14	42	42
Postretirement Plan, Medical and Life
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract]
Service cost, benefits earned during the period	0	0	0	0
Interest cost on projected benefit obligation	1	1	3	3
Expected return on plan assets	0	0	0	0
Amortization of unrecognized prior service cost	0	0	0	0
Amortization of unrecognized net loss	5	4	15	11
Net periodic pension benefit	$ 6	$ 5	$ 18	$ 14