Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ 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	$ 562.1	$ 602.8	$ 1,057.2	$ 1,111.1
Cost of sales	462.4	479.8	865.0	881.8
Gross profit	99.7	123.0	192.2	229.3
Operating costs and expenses:
Engineering, selling and administrative expenses	83.7	87.6	159.7	162.7
Amortization of intangible assets	0.8	0.7	1.5	1.7
Restructuring expense	2.3	0.3	2.9	0.3
Total operating costs and expenses	86.8	88.6	164.1	164.7
Operating income	12.9	34.4	28.1	64.6
Other income (expense):
Interest expense	(9.6)	(9.0)	(18.8)	(17.1)
Amortization of deferred financing fees	(0.4)	(0.4)	(0.7)	(0.7)
Other income (expense) - net	0.3	(10.0)	1.0	(11.1)
Total other expense	(9.7)	(19.4)	(18.5)	(28.9)
Income before income taxes	3.2	15.0	9.6	35.7
Provision (benefit) for income taxes	1.6	(5.2)	3.5	(1.0)
Net income	$ 1.6	$ 20.2	$ 6.1	$ 36.7
Per Share Data
Basic net income per common share	$ 0.05	$ 0.58	$ 0.17	$ 1.05
Diluted net income per common share	$ 0.04	$ 0.57	$ 0.17	$ 1.03
Weighted average shares outstanding - basic	35,368,492	35,084,580	35,316,971	35,102,924
Weighted average shares outstanding - diluted	35,738,322	35,650,143	35,899,481	35,766,952