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Debt - Industrial Revenue Bonds (Details) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014
Short-term Debt [Member] | Industrial revenue bonds due 2028 [Member] |  |
Short-term Debt [Line Items] |  |
Effective interest rate, maximum | 12.00% | 12.00%

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- Definition When presenting a range of interest rates, the highest effective rate for funds borrowed under the debt agreement as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + 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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- Details
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- Details
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