CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Statement [Abstract]
Net sales	$ 946.9	$ 896.9	$ 791.8
Cost of sales	621.2	589.2	518.6
Gross profit	325.7	307.7	273.2
Selling, distribution and administrative expenses	260.4	245.2	227.2
Special (gains) charges, net	(0.8)	0.8	0.3
Operating income from continuing operations	66.1	61.7	45.7
Foreign currency exchange loss	0.0	0.4	0.0
Interest and other (income) expense, net	0.0	(1.6)	0.2
Income from continuing operations before income taxes	66.1	62.9	45.5
Provision (benefit) for income taxes	16.1	13.4	(20.0)
Net income from continuing operations	50.0	49.5	65.5
(Loss) income from discontinued operations, net of tax	(1.5)	175.2	(25.1)
Net income	$ 48.5	$ 224.7	$ 40.4
Net income per common share from continuing operations:
Net income per share from continuing operations-basic (in dollars per share)	$ 1.33	$ 1.34	$ 1.77
Net income per share from continuing operations-diluted (in dollars per share)	1.32	1.31	1.74
Net income (loss) per common share from discontinued operations- basic (in dollars per share)	(0.04)	4.69	(0.68)
Net income (loss) per common share from discontinued operations-diluted (in dollars per share)	(0.04)	4.62	(0.67)
Net income (loss) per common share - basic (in dollars per share)	1.29	6.03	1.09
Net income (loss) per common share - diluted (in dollars per share)	$ 1.28	$ 5.93	$ 1.07
Weighted average common and common equivalent shares:
Basic (in shares)	37.5	37.2	37.0
Diluted (in shares)	37.7	37.9	37.6
Dividends declared (in dollars per share)	$ 0.48	$ 7.94	$ 1.85