Condensed Consolidated Statements of Income - USD ($) shares in Thousands, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement [Abstract]
Net sales	$ 372.3	$ 388.3
Cost of goods sold	(258.4)	(270.5)
Gross profit	113.9	117.8
Operating expenses:
Selling, general and administrative	(64.4)	(72.5)
Research and development	(8.6)	(9.1)
Total operating expenses	(73.0)	(81.6)
Operating income	40.9	36.2
Other income, net	3.9	4.1
Interest expense, net	(0.6)	(1.5)
Income before income tax expense	44.2	38.8
Income tax expense	(11.1)	(10.1)
Net income	$ 33.1	$ 28.7
Earnings per share:
Basic	$ 1.35	$ 1.17
Diluted	$ 1.34	$ 1.17
Weighted average shares outstanding (in thousands):
Basic	24,529	24,437
Diluted	24,742	24,594