PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS (Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Pension Plan
PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS
Interest cost	$ 0	$ 212	$ 0	$ 212
Expected return on plan assets	0	(195)	0	(207)
Amortization of net actuarial loss	0	112	0	224
Settlement	0	4,884	0	4,884
Net periodic benefit cost	0	5,013	0	5,113
Pension Plan | Maximum
PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS
Settlement		4,900
SERPs
PENSION AND SUPPLEMENTAL EXECUTIVE RETIREMENT PLANS
Interest cost	112	75	224	150
Amortization of net actuarial (gain) loss	(19)	21	(38)	42
Amortization of net transition obligation	2	4	4	8
Net periodic benefit cost	95	$ 100	190	$ 200
Projected benefit obligation	$ 9,200		$ 9,200		$ 9,200