INCOME TAXES - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Accrued expenses and other liabilities	$ 5.9	$ 12.1
Inventory	1.1	1.5
Depreciation	1.4	0.6
Intangible & other	8.1	13.2
Net operating loss and credit carryforwards	28.6	46.5
Valuation allowances	(18.9)	(69.7)
Total non-current deferred tax assets	26.2	4.2
Other	0.1	0.3
Total non-current liabilities	$ 0.1	$ 0.3