Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 198.7	$ 197.9	$ 374.4	$ 356.7
Cost of sales	156.5	155.7	296.7	282.5
Gross margin	42.2	42.2	77.7	74.2
Operating expenses	38.1	32.2	75.1	61.1
Operating income	4.1	10.0	2.6	13.1
Interest expense, net	0.7	0.6	1.3	1.1
Income from continuing operations before income taxes	3.4	9.4	1.3	12.0
Income tax expense (benefit)	1.1	3.5	(0.1)	4.6
Income from continuing operations	2.3	5.9	1.4	7.4
(Loss) income from discontinued operations, net of taxes	(0.1)	4.5	(0.1)	4.4
Net income	$ 2.2	$ 10.4	$ 1.3	$ 11.8
Income from continuing operations per share - basic and diluted	$ 0.09	$ 0.23	$ 0.05	$ 0.29
(Loss) income from discontinued operations per share - basic and diluted	0.00	0.18	0.00	0.17
Net income per share - basic and diluted	$ 0.09	$ 0.41	$ 0.05	$ 0.47
Weighted average shares outstanding:
Basic and diluted shares outstanding	24.9	24.5	24.8	24.5