Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Net sales	$ 288.2	$ 261.5
Cost of products sold	207.4	187.2
Gross profit	80.8	74.3
Selling expense	9.1	9.5
Research and development expense	3.8	3.2
General expense	32.7	27.4
Total nonmanufacturing expenses	45.6	40.1
Restructuring and impairment expense	1.7	0.1
Operating profit	33.5	34.1
Interest expense	2.9	6.9
Other (expense) income, net	(2.6)	0.6
Income before income taxes and income from equity affiliates	28.0	27.8
Provision for income taxes	7.4	5.3
Income from equity affiliates, net of income taxes	1.0	0.0
Net income	$ 21.6	$ 22.5
Net income per share - basic:
Net income per share - basic (in dollars per share)	$ 0.69	$ 0.72
Net income per share – diluted:
Net income per share - diluted (in dollars per share)	$ 0.68	$ 0.72
Weighted average shares outstanding:
Basic (in shares)	30,974,200	30,712,300
Diluted (in shares)	31,340,500	30,910,000