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Fair-Value Measurements (Schedule of (Losses)/Gains on Changes in Fair Value of Derivative Instruments) (Details) (Foreign Currency Options [Member], Not Designated as Hedging Instrument [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Foreign Currency Options [Member] | Not Designated as Hedging Instrument [Member] |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
(Losses)/gains recognized in income, net | $ (81)us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | $ (107)us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember | $ 33 us-gaap_DerivativeGainLossOnDerivativeNet / us-gaap_DerivativeInstrumentRiskAxis = us-gaap_ForeignExchangeOptionMember / us-gaap_HedgingDesignationAxis = us-gaap_NondesignatedMember

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624171-113959 + Details
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- Details
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