Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement [Abstract]
Net sales	$ 355.2	$ 302.5
Cost of sales	258.5	220.7
Gross profit	96.7	81.8
Selling, distribution & administrative expenses	76.6	69.4
Operating income from continuing operations	20.1	12.4
Interest and other (income) expense, net	0.1	(0.2)
Income from continuing operations before income taxes	20.0	12.6
Provision for income taxes	5.8	2.3
Net income from continuing operations	14.2	10.3
Income (loss) from discontinued operations, net of tax	0.4	(28.8)
Net income (loss)	$ 14.6	$ (18.5)
Net income per common share from continuing operations:
Basic (in dollars per share)	$ 0.38	$ 0.28
Diluted (in dollars per share)	0.37	0.28
Net income (loss) per common share from discontinued operations:
Basic (in dollars per share)	0.01	(0.78)
Diluted (in dollars per share)	0.01	(0.78)
Net income (loss) per common share:
Basic (in dollars per share)	0.39	(0.50)
Diluted (in dollars per share)	$ 0.38	$ (0.50)
Weighted average common and common equivalent shares:
Basic (in shares)	37.2	37.2
Diluted (in shares)	37.9	37.2
Dividends declared (in dollars per share)	$ 0.11	$ 0.05