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Financial Instruments And Risk Management (Balance Sheet Classification And Fair Value Of Derivative Instruments) (Details) (Currency Forward Contracts [Member], USD $) In Thousands, unless otherwise specified | Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2013
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Prepaid Expenses And Other Current Assets [Member] | Derivative Instruments Designated As Cash Flow Hedges [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair value of derivative assets | $ 986 | $ 1,936 | $ 2,516
Prepaid Expenses And Other Current Assets [Member] | Derivative Instruments Not Designated As Cash Flow Hedges [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair value of derivative assets | 302 | 2,956 | 1,855
Other Non-Current Assets [Member] | Derivative Instruments Designated As Cash Flow Hedges [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair value of derivative assets | 155 | 24 | 343
Accrued Liabilities [Member] | Derivative Instruments Designated As Cash Flow Hedges [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair value of derivative liabilities | 1,081 | 872 | 262
Accrued Liabilities [Member] | Derivative Instruments Not Designated As Cash Flow Hedges [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair value of derivative liabilities | 650 | 280 | 460
Other Long Term Liabilities [Member] | Derivative Instruments Designated As Cash Flow Hedges [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Fair value of derivative liabilities | $ 12 | $ 95 | $ 0

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- Definition Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 + Details
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- Definition Aggregate fair value of all derivative liabilities designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611 + Details
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