LEASES - Finance Leases (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Finance lease ROU assets	$ 5.9	$ 5.2
Finance Lease, ROU Asset, Accumulated Amortization	(3.3)	(1.8)
Finance lease ROU assets, net	2.6	3.4
Current installments of obligations under finance leases	1.7	1.7
Long-term portion of obligations under finance leases	0.9	1.7
Total finance lease liabilities	$ 2.6	$ 3.4