Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 334.7	$ 270.1	$ 613.5	$ 556.2
Cost of sales	253.1	199.8	463.1	411.1
Gross profit	81.6	70.3	150.4	145.1
Selling, engineering, general and administrative expenses	42.8	37.4	83.6	79.6
Acquisition and integration-related expenses	0.3	0.3	0.5	0.6
Restructuring	0.0	1.3	0.0	1.3
Operating income	38.5	31.3	66.3	63.6
Interest expense	1.1	1.8	2.2	3.3
Other (income) expense, net	(0.3)	2.0	(0.8)	2.2
Income before income taxes	37.7	27.5	64.9	58.1
Income tax expense	8.0	6.1	13.0	13.3
Net income	$ 29.7	$ 21.4	$ 51.9	$ 44.8
Basic earnings per share:
Earnings per share (usd per share)	$ 0.49	$ 0.36	$ 0.85	$ 0.74
Diluted earnings per share:
Earnings per share (usd per share)	$ 0.48	$ 0.35	$ 0.84	$ 0.73
Weighted average common shares outstanding:
Basic (shares)	60.9	60.1	60.8	60.3
Diluted (shares)	61.8	61.3	61.8	61.6