RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Pension Plan
(Cost)/earnings components:
Interest cost	$ (312)	$ (234)
Expected return on plan assets	315	414
Net amortization and deferral	(51)	(36)
Total net periodic pension (cost)/earnings	(48)	144
SERP
(Cost)/earnings components:
Interest cost	(219)	(138)
Net amortization and deferral	(30)	(87)
Total net periodic pension (cost)/earnings	$ (249)	$ (225)