RETIREMENT PLANS - Net Periodic Pension Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Components of the plan's net periodic pension cost
Settlements				$ 369
Pension benefits
Components of the plan's net periodic pension cost
Service cost	$ 22	$ 38	$ 67	113
Interest cost	824	593	2,473	1,780
Expected return on plan assets	(729)	(953)	(2,188)	(2,858)
Amortization of unrecognized actuarial gain	(11)		(32)
Settlements				369
Net periodic pension expense (benefit)	106	(322)	320	(596)
Postretirement benefits
Components of the plan's net periodic pension cost
Service cost	16	31	49	62
Interest cost	45	35	136	70
Amortization of unrecognized actuarial gain	(28)		(84)
Net periodic pension expense (benefit)	$ 33	$ 66	$ 101	$ 132