Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Statement [Abstract]
Net sales	$ 242.1	$ 248.6	$ 469.4	$ 480.8
Cost of sales	157.3	162.6	307.9	314.5
Gross profit	84.8	86.0	161.5	166.3
Selling, distribution & administrative expenses	64.7	66.0	129.9	133.1
Operating income from continuing operations	20.1	20.0	31.6	33.2
Interest and other (income) expense, net	0.0	(0.1)	0.2	(0.1)
Income from continuing operations before income taxes	20.1	20.1	31.4	33.3
Provision for income taxes	4.8	5.2	7.8	8.4
Net income from continuing operations	15.3	14.9	23.6	24.9
Net income (loss) from discontinued operations	1.1	(0.3)	1.0	(0.6)
Net income	$ 16.4	$ 14.6	$ 24.6	$ 24.3
Net income per common share from continuing operations:
Basic (in dollars per share)	$ 0.41	$ 0.40	$ 0.62	$ 0.66
Diluted (in dollars per share)	0.40	0.39	0.62	0.66
Net income (loss) per common share from discontinued operations:
Basic (in dollars per share)	0.03	(0.01)	0.03	(0.02)
Diluted (in dollars per share)	0.03	(0.01)	0.03	(0.02)
Net income per common share:
Net income per share - Basic (in dollars per share)	0.44	0.39	0.65	0.64
Net income per share - Diluted (in dollars per share)	$ 0.43	$ 0.38	$ 0.65	$ 0.64
Weighted average common and common equivalent shares:
Basic (in shares)	37.5	37.5	37.6	37.4
Diluted (in shares)	37.6	37.9	37.8	37.9
Dividends declared (in dollars per share)	$ 0.14	$ 0.12	$ 1.28	$ 0.24