Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 248.6	$ 231.2	$ 480.8	$ 443.4
Cost of sales	162.6	151.2	314.5	290.9
Gross profit	86.0	80.0	166.3	152.5
Selling, distribution & administrative expenses	66.0	61.7	133.1	123.1
Operating income from continuing operations	20.0	18.3	33.2	29.4
Interest and other (income) expense, net	(0.1)	0.0	(0.1)	0.1
Income from continuing operations before income taxes	20.1	18.3	33.3	29.3
Provision for income taxes	5.2	4.9	8.4	7.2
Net income from continuing operations	14.9	13.4	24.9	22.1
Income (loss) from discontinued operations, net of tax	(0.3)	4.8	(0.6)	10.7
Net income	$ 14.6	$ 18.2	$ 24.3	$ 32.8
Net income per common share from continuing operations:
Basic (in dollars per share)	$ 0.40	$ 0.36	$ 0.66	$ 0.59
Diluted (in dollars per share)	0.39	0.35	0.66	0.58
Net income (loss) per common share from discontinued operations:
Basic (in dollars per share)	(0.01)	0.13	(0.02)	0.29
Diluted (in dollars per share)	(0.01)	0.13	(0.02)	0.28
Net income per common share:
Basic (in dollars per share)	0.39	0.49	0.64	0.88
Diluted (in dollars per share)	$ 0.38	$ 0.48	$ 0.64	$ 0.87
Weighted average common and common equivalent shares:
Basic (in shares)	37.5	37.2	37.4	37.2
Diluted (in shares)	37.9	37.9	37.9	37.9
Dividends declared (in dollars per share)	$ 0.12	$ 1.11	$ 0.24	$ 1.22