INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Accrued expenses and other liabilities	$ 2.5	$ 1.3
Inventory	1.7	1.3
Operating lease obligations	20.9	16.5
Intangible & other	0.6	1.3
Net operating loss and credit carryforwards	15.5	17.7
Valuation allowances	(15.2)	(16.8)
Total deferred tax assets	26.0	21.3
Operating lease right-of-use assets	18.4	14.0
Other	0.1	0.1
Total deferred tax liabilities	$ 18.5	$ 14.1