Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Net sales	$ 175.1	$ 168.7	$ 322.5	$ 304.0
Cost of sales	139.5	135.2	258.4	244.0
Gross margin	35.6	33.5	64.1	60.0
Operating expenses	30.0	29.4	57.9	56.1
Gain on disposal of assets	(0.4)	0.0	(0.4)	0.0
Operating income	6.0	4.1	6.6	3.9
Interest expense, net	0.6	0.7	1.1	1.3
Income from continuing operations before income taxes	5.4	3.4	5.5	2.6
Provision for income taxes	0.0	0.0	0.0	0.0
Income from continuing operations	5.4	3.4	5.5	2.6
Loss from discontinued operations, net of taxes	(0.3)	(0.2)	(0.4)	(3.4)
Net income (loss)	$ 5.1	$ 3.2	$ 5.1	$ (0.8)
Net income from continuing operations per share - basic and diluted	$ 0.21	$ 0.14	$ 0.22	$ 0.11
Net loss from discontinued operations per share - basic and diluted	(0.01)	(0.01)	(0.02)	(0.14)
Net income (loss) per share - basic and diluted	$ 0.20	$ 0.13	$ 0.20	$ (0.03)
Weighted average shares outstanding:
Basic shares outstanding	24.1	23.6	24.0	23.4
Diluted shares outstanding	24.1	23.6	24.0	23.5