Segment Information, by Reportable Segments (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Segment	Jun. 30, 2016 USD ($)
Segment Information [Abstract]
Number of reportable segments | Segment			2
Net sales [Abstract]
Net sales	$ 313.0	$ 297.7	$ 615.5	$ 584.5
Operating income (loss) [Abstract]
Operating income (loss)	21.7	5.4	$ 34.1	8.5
IPG [Member]
Segment Reporting Information [Line Items]
Percentage of sales of private label products			30.00%
Reportable Segments [Member] | IPG [Member]
Net sales [Abstract]
Net sales	202.7	181.8	$ 392.9	352.4
Operating income (loss) [Abstract]
Operating income (loss)	22.9	8.6	35.4	16.5
Reportable Segments [Member] | ETG [Member]
Net sales [Abstract]
Net sales	110.3	115.0	222.6	230.2
Operating income (loss) [Abstract]
Operating income (loss)	5.7	2.9	11.5	6.6
Reportable Segments [Member] | NATG [Member]
Operating income (loss) [Abstract]
Operating income (loss)	(0.4)	(0.6)	(0.4)	(2.4)
Corporate and Other [Member]
Net sales [Abstract]
Net sales	0.0	0.9	0.0	1.9
Operating income (loss) [Abstract]
Operating income (loss)	$ (6.5)	$ (5.5)	$ (12.4)	$ (12.2)