Impairment and Restructuring Charges (Details Textual) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) Positions	Jun. 30, 2016 USD ($) Positions	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Restructuring and Related Cost [Line Items]
Exit costs	$ 0.1	$ 1.3	$ 0.6	$ 1.5
Tangible Asset Impairment Charges				2.6
Severance Costs	0.7	1.6	1.9	$ 9.3
Restructuring accrual	5.8		$ 5.8		$ 10.1	$ 11.3
WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | Positions			17	100
Severance Costs		1.2	$ 0.8	$ 7.5
Mobile Industries [Member]
Restructuring and Related Cost [Line Items]
Exit costs	0.1	1.1	0.1	1.3
Tangible Asset Impairment Charges				2.6
Severance Costs	0.6	0.7	1.8	4.8
Mobile Industries [Member] | WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Severance Costs		0.3		3.0
Process Industries [Member]
Restructuring and Related Cost [Line Items]
Exit costs	0.0	0.2	0.0	0.2
Tangible Asset Impairment Charges				0.0
Severance Costs	0.1	0.9	0.1	4.5
Process Industries [Member] | WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Severance Costs		0.9		4.5
Corporate Segment [Member]
Restructuring and Related Cost [Line Items]
Exit costs	0.0	0.0	0.5	0.0
Tangible Asset Impairment Charges				0.0
Severance Costs	0.0	$ 0.0	0.0	0.0
Pulaski [Member]
Restructuring and Related Cost [Line Items]
Other Restructuring Costs			$ 7.1
Pulaski [Member] | WorkforceReduction [Member]
Restructuring and Related Cost [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated | Positions			120
Severance Costs	$ 0.4		$ 1.1
Altavista Bearing Plant [Member] [Member]
Restructuring and Related Cost [Line Items]
Goodwill and Intangible Asset Impairment				2.4
Severance Costs				$ 1.5
Other Restructuring Costs			$ 11.2