Segment Information, by Reportable Segments (Details) $ in Millions	3 Months Ended
	Mar. 31, 2017 USD ($) Segment	Mar. 31, 2016 USD ($)
Segment Information [Abstract]
Number of reportable segments | Segment	2
Net sales [Abstract]
Net sales	$ 302.5	$ 286.8
Operating income (loss) [Abstract]
Operating income (loss)	12.4	3.1
Net loss	10.3	1.5
Reportable Segments [Member] | IPG [Member]
Net sales [Abstract]
Net sales	190.2	170.6
Operating income (loss) [Abstract]
Operating income (loss)	12.5	7.9
Reportable Segments [Member] | ETG [Member]
Net sales [Abstract]
Net sales	112.3	115.2
Operating income (loss) [Abstract]
Operating income (loss)	5.8	3.7
Reportable Segments [Member] | NATG [Member]
Operating income (loss) [Abstract]
Operating income (loss)	0.0	(1.8)
Corporate and Other [Member]
Net sales [Abstract]
Net sales	0.0	1.0
Operating income (loss) [Abstract]
Operating income (loss)	$ (5.9)	$ (6.7)