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Fair Value (Details Textual) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2016 | Mar. 31, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets Held For Sale Carrying Value - Fair Value Disclosure | $ 0.2 |  |  | $ 0.2 |
Impairment of Long-Lived Assets to be Disposed of |  |  |  | 0.2 |
Assets Held-for-sale, Long Lived, Fair Value Disclosure | 0.0 |  |  | 0.0 |
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure | 6.1 |  |  | 6.1 |
Impairment of Long-Lived Assets Held-for-use |  |  |  | 3.6 |
Long Lived Assets Held and Used Fair Value | 2.5 |  |  | 2.5 |
Long-term Debt, Fair Value |  |  | $ 723.9 |  | $ 532.2
Long-term Fixed-rate Debt, Carrying Value |  |  | 684.3 |  | 507.3
Altavista Bearing Plant [Member] [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure | 5.6 |  |  | 5.6 |
Impairment of Long-Lived Assets Held-for-use | 0.7 | $ 2.4 |  | (3.1) |
Deferred Gain on Sale of Property |  |  | 1.6 |  |
Long Lived Assets Held and Used Fair Value | 2.5 | $ 3.2 |  | 2.5 |
Land [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets Held For Sale Carrying Value - Fair Value Disclosure | 0.2 |  |  | 0.2 |
Impairment of Long-Lived Assets to be Disposed of |  |  |  | 0.2 |
Assets Held-for-sale, Long Lived, Fair Value Disclosure | 0.0 |  |  | 0.0 |
Impairment of Long-Lived Assets Held-for-use |  |  |  | 0.2 |
Fair Value, Measurements, Recurring [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Assets, Fair Value Disclosure, Recurring |  |  | $ 158.8 |  | $ 173.1
Property, Plant and Equipment [Member] | Benoni [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 |  |  | 0.0 |
Long Lived Fixed Assets Held and Used at Carrying Value - Fair Value Disclosure | 0.5 |  |  | 0.5 |
Impairment of Long-Lived Assets Held-for-use |  |  |  | (0.5) |
Long Lived Assets Held and Used Fair Value | $ 0.0 |  |  | $ 0.0 |

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- Definition Amount of long lived assets designated as held for sale and used at carrying amount. + References No definition available. + Details
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- Definition Amount of long lived assets classified as held and used, at fair value. + References No definition available. + Details
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- Definition Represents the carrying value of the company's long-term, fixed-rate debt as of the reporting period date. + References No definition available. + Details
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- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References No definition available. + Details
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- Definition Fair value portion of assets classified as held for sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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- Definition Amount of other assets held-for-sale that are not part of a disposal group. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 15 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=77912953&loc=d3e400-110220 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84241808&loc=d3e92212-112881 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84176398&loc=d3e2921-110230 + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2611-110228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. + References No definition available. + Details
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