INCOME TAX - Schedule of Reconciliation Between Income Tax Expense and Computed Income Tax Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax at Federal statutory rate	$ 16.8	$ 20.0	$ 21.8
State and local income taxes, net of federal tax benefit	2.8	3.5	3.7
Stock based compensation	(0.2)	(0.1)	0.0
Non-deductible items	0.0	0.5	0.7
Other items, net	(0.3)	0.6	(0.5)
Income tax	$ 19.1	$ 24.5	$ 25.7
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income tax at Federal statutory rate	21.00%	21.00%	21.00%
State and local income taxes, net of federal tax benefit	3.50%	3.70%	3.70%
Stock based compensation	(0.20%)	(0.10%)	0.00%
Non-deductible items	0.00%	0.50%	0.60%
Other items, net	(0.40%)	0.60%	(0.50%)
Income tax	23.90%	25.70%	24.80%