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Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments) (Details) - Derivatives not designated as hedging instruments - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Derivative [Line Items] |  |  |  |
Total non-designated derivative realized loss (gain), net | $ (2,492) | $ (693) | $ (4,860) | $ (421)
Commodity options |  |  |  |
Derivative [Line Items] |  |  |  |
Total non-designated derivative realized loss (gain), net | 37 | (153) | 392 | 119
Foreign exchange options |  |  |  |
Derivative [Line Items] |  |  |  |
Total non-designated derivative realized loss (gain), net | $ (2,643) | $ (303) | $ (5,460) | $ (303)

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + 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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