INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Accrued expenses and other liabilities	$ 2.8	$ 2.4
Inventory	1.3	1.1
Intangible & other	3.8	6.9
Net operating loss and credit carryforwards	19.3	28.0
Valuation allowances	(18.3)	(18.3)
Total non-current deferred tax assets	8.9	20.1
Other	0.1	0.1
Total non-current liabilities	$ 0.1	$ 0.1