Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Income Statement [Abstract]
Net sales	$ 418.0	$ 386.1
Cost of sales	337.8	317.7
Gross profit	80.2	68.4
Operating costs and expenses:
Engineering, selling and administrative expenses	59.4	60.4
Amortization of intangible assets	0.1	0.1
Restructuring expense	4.5	6.2
Total operating costs and expenses	64.0	66.7
Operating income	16.2	1.7
Other income (expense):
Interest expense	(10.9)	(10.0)
Amortization of deferred financing fees	(0.4)	(0.5)
Loss on debt extinguishment	(25.0)
Other income (expense) - net	(3.3)	2.7
Total other expense	(39.6)	(7.8)
Loss before income taxes	(23.4)	(6.1)
Provision for income taxes	3.3	3.9
Net loss	$ (26.7)	$ (10.0)
Per Share Data
Basic loss per common share	$ (0.75)	$ (0.28)
Diluted loss per common share	$ (0.75)	$ (0.28)
Weighted average shares outstanding - basic	35,642,832	35,367,340
Weighted average shares outstanding - diluted	35,642,832	35,367,340