SEGMENT AND RELATED INFORMATION - Segments by Geographic Area (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 330.6	$ 319.3	$ 313.0	$ 302.5	$ 295.6	$ 290.2	$ 297.7	$ 286.8	$ 1,265.4	$ 1,170.3	$ 1,243.5
Long-lived assets	15.1				16.4				15.1	16.4	19.3
United States | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									759.4	692.3	676.8
Long-lived assets	13.9				15.4				13.9	15.4	18.1
France | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									473.6	417.2	382.6
Long-lived assets	1.2				1.0				1.2	1.0	1.1
Other Europe | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									0.0	33.9	59.1
Long-lived assets	$ 0.0				$ 0.0				0.0	0.0	0.1
Other North America | Reportable Geographical Components
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									$ 32.4	$ 26.9	$ 125.0