Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net sales	$ 524.8	$ 520.9	$ 1,582.0	$ 1,632.0
Cost of sales	437.2	424.1	1,302.2	1,305.9
Gross profit	87.6	96.8	279.8	326.1
Operating costs and expenses:
Engineering, selling and administrative expenses	78.9	77.4	238.6	240.1
Amortization of intangible assets	0.7	0.7	2.2	2.4
Restructuring expense	0.5	0.7	3.4	1.0
Total operating costs and expenses	80.1	78.8	244.2	243.5
Operating income	7.5	18.0	35.6	82.6
Other income (expense):
Interest expense	(9.6)	(8.4)	(28.4)	(25.5)
Amortization of deferred financing fees	(0.3)	(0.3)	(1.0)	(1.0)
Other income (expense) - net	(4.9)	1.1	(3.9)	(10.0)
Total other expense	(14.8)	(7.6)	(33.3)	(36.5)
Income (loss) before income taxes	(7.3)	10.4	2.3	46.1
Provision (benefit) for income taxes	(0.3)	0.0	3.2	(1.0)
Net income (loss)	$ (7.0)	$ 10.4	$ (0.9)	$ 47.1
Per Share Data
Basic net income (loss) per common share	$ (0.2)	$ 0.3	$ (0.03)	$ 1.34
Diluted net income (loss) per common share	$ (0.2)	$ 0.29	$ (0.03)	$ 1.31
Weighted average shares outstanding - basic	35,123,015	35,080,037	35,251,847	35,095,211
Weighted average shares outstanding - diluted	35,123,015	35,787,704	35,251,847	35,836,672