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Property, Plant and Equipment, net	3 Months Ended
Property, Plant and Equipment, net	Mar. 31, 2015
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, net	Property, Plant and Equipment, net Depreciation expense associated with property, plant and equipment was $5.0 million and $6.4 million for the three months ended March 31, 2015 and 2014, respectively. Accumulated depreciation was $584.9 million and $644.6 million as of March 31, 2015 and December 31, 2014, respectively.

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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