CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Statement [Abstract]
Net sales	$ 190.5	$ 213.4
Cost of sales	133.5	145.2
Gross margin	57.0	68.2
Selling, general and administrative expenses	44.5	47.5
Research and development expenses	7.1	8.9
Restructuring and impairment charges	5.9	0.1
Other operating (income) expense, net	(0.2)	0.0
Operating income (loss)	(0.3)	11.7
Equity income in unconsolidated joint ventures	0.0	0.3
Other income (expense), net	(1.6)	0.4
Interest income (expense), net	0.3	(0.8)
Income (loss) before income taxes	(1.6)	11.6
Income tax (benefit) expense	(0.2)	3.8
Net income (loss)	$ (1.4)	$ 7.8
Basic earnings (loss) per share (in dollars per share)	$ (0.08)	$ 0.42
Diluted earnings (loss) per share (in dollars per share)	$ (0.08)	$ 0.42
Shares used in computing:
Basic earnings (loss) per share (in shares)	18.5	18.6
Diluted earnings (loss) per share (in shares)	18.5	18.7