CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Statement [Abstract]
Net sales	$ 214.2	$ 230.9	$ 427.6	$ 474.7
Cost of sales	141.1	151.3	286.3	315.4
Gross margin	73.1	79.6	141.3	159.3
Selling, general and administrative expenses	50.9	46.2	98.4	106.3
Research and development expenses	9.5	8.1	18.4	17.7
Restructuring and impairment charges	1.4	3.9	1.5	14.4
Other operating (income) expense, net	0.0	(6.5)	0.0	(6.7)
Operating income	11.3	27.9	23.0	27.6
Equity income in unconsolidated joint ventures	0.5	0.8	0.8	0.9
Other income (expense), net	0.3	(0.8)	0.7	(0.7)
Interest expense, net	(0.2)	(2.8)	(1.0)	(6.3)
Income before income taxes	11.9	25.1	23.5	21.5
Income tax expense	3.8	7.2	7.6	7.1
Net income	$ 8.1	$ 17.9	$ 15.9	$ 14.4
Basic earnings per share (in dollars per share)	$ 0.44	$ 0.96	$ 0.85	$ 0.77
Diluted earnings per share (in dollars per share)	$ 0.44	$ 0.96	$ 0.85	$ 0.77
Shares used in computing:
Basic earnings per share (in shares)	18.6	18.6	18.6	18.6
Diluted earnings per share (in shares)	18.6	18.7	18.6	18.7