RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Plan
(Cost)/earnings components:
Interest cost	$ (104)	$ (78)
Expected return on plan assets	105	138
Net amortization and deferral	(17)	(12)
Total net periodic pension (cost)/earnings	(16)	48
SERP
(Cost)/earnings components:
Interest cost	(73)	(46)
Net amortization and deferral	(10)	(29)
Total net periodic pension (cost)/earnings	$ (83)	$ (75)