Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Net sales	$ 520.9	$ 454.7	$ 1,632.0	$ 1,410.9
Cost of sales	424.1	380.4	1,305.9	1,162.9
Gross profit	96.8	74.3	326.1	248.0
Operating costs and expenses:
Engineering, selling and administrative expenses	77.4	65.8	240.1	201.6
Amortization of intangible assets	0.7	0.8	2.4	2.4
Restructuring expense	0.7	0.1	1.0	0.5
Total operating costs and expenses	78.8	66.7	243.5	204.5
Operating income	18.0	7.6	82.6	43.5
Other expense:
Interest expense	(8.4)	(8.0)	(25.5)	(23.3)
Amortization of deferred financing fees	(0.3)	(0.3)	(1.0)	(1.0)
Other income (expense) - net	1.1	2.7	(10.0)	0.4
Total other expense	(7.6)	(5.6)	(36.5)	(23.9)
Income before income taxes	10.4	2.0	46.1	19.6
Benefit for income taxes	0.0	(0.3)	(1.0)	(0.9)
Net income	$ 10.4	$ 2.3	$ 47.1	$ 20.5
Per Share Data and Share Amounts:
Basic net income per common share	$ 0.3	$ 0.07	$ 1.34	$ 0.58
Diluted net income per common share	$ 0.29	$ 0.07	$ 1.31	$ 0.58
Weighted average shares outstanding - basic	35,080,037	35,181,262	35,095,211	35,199,221
Weighted average shares outstanding - diluted	35,787,704	35,374,194	35,836,672	35,470,301