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Properties, Plant and Equipment (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2016 | Mar. 31, 2015
Property, Plant and Equipment [Abstract] |  |
Disposition of Long-Lived Assets, Carrying Value | $ 0.7 |
Depreciation expense | $ 1.5 | $ 1.6

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- Definition Disposition of Long-Lived Assets, Carrying Value + References No definition available. + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: 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=31042434&loc=d3e3602-108585 + Details
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Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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