PENSION AND POST-RETIREMENT PLANS - DEFINED CONTRIBUTION PLANS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
401 K plan
Defined Contribution Plans
Employer matching contribution (as a percent)	4.00%
Employer matching contribution expenses	$ 4.2	$ 3.6	$ 3.2
Profit sharing plan
Defined Contribution Plans
Profit sharing expense recorded	$ 3.1	$ 2.8	$ 2.5