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	$ 324.3	$ 291.0	$ 598.1	$ 540.7
Cost of sales	235.3	211.8	438.8	399.6
Gross profit	89.0	79.2	159.3	141.1
Selling, engineering, general and administrative expenses	41.8	40.7	85.7	82.5
Acquisition and integration-related expenses	0.9	0.4	1.5	0.9
Operating income	46.3	38.1	72.1	57.7
Interest expense	2.0	2.5	4.0	5.0
Other (income) expense, net	(0.1)	0.4	0.3	0.5
Income before income taxes	44.4	35.2	67.8	52.2
Income tax expense	11.6	8.3	17.5	12.4
Net income	$ 32.8	$ 26.9	$ 50.3	$ 39.8
Basic earnings per share:
Earnings per share (usd per share)	$ 0.55	$ 0.45	$ 0.84	$ 0.67
Diluted earnings per share:
Net earnings per share (usd per share)	$ 0.54	$ 0.44	$ 0.82	$ 0.65
Weighted average common shares outstanding:
Basic (shares)	60.1	59.9	60.1	59.9
Diluted (shares)	61.3	61.0	61.2	60.9