Fair Value (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Mar. 31, 2016	Dec. 31, 2015	Jun. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long Lived Assets Held and Used Fair Value	$ 2.5	$ 2.5	$ 0.5
Long-term Debt, Fair Value	547.4	547.4			$ 521.5
Assets Held-for-sale, Long Lived, Fair Value Disclosure	0.0	0.0	2.8
Long-term Fixed-rate Debt, Carrying Value	507.3	507.3			519.2
Impairment of Long-Lived Assets to be Disposed of		0.2	3.0
Impairment of Long-Lived Assets Held-for-use		3.6	0.3
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure	6.1	6.1	0.8
Land [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Held-for-sale, Long Lived, Fair Value Disclosure				$ 0.0
Repair Business [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets Held For Sale Carrying Value - Fair Value Disclosure		5.8
Assets Held-for-sale, Long Lived, Fair Value Disclosure	0.0	0.0	2.8			$ 2.8
Impairment of Long-Lived Assets to be Disposed of		(0.2)	(3.0)
Impairment of Long-Lived Assets Held-for-use		3.0
Altavista Bearing Plant [Member] [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long Lived Assets Held and Used Fair Value	2.5	2.5		$ 3.2
Impairment of Long-Lived Assets Held-for-use	0.7	2.4
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure	5.6	5.6
Benoni [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of Long-Lived Assets Held-for-use		0.5
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure	0.5	0.5
Property, Plant and Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long Lived Assets Held and Used Fair Value			0.5
Assets Held-for-sale, Long Lived, Fair Value Disclosure	0.5	0.5
Impairment of Long-Lived Assets Held-for-use		0.3	(0.3)
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure	0.8	0.8	$ 0.8
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure, Recurring	141.9	141.9			$ 147.7
Benoni [Member] | Property, Plant and Equipment [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long Lived Assets Held and Used Fair Value	0.0	0.0
Impairment of Long-Lived Assets Held-for-use		(0.5)
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure	$ 0.5	$ 0.5