Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments And Risk Management (Gross Notional Amount Of Outstanding Derivative Instruments) (Details)

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Financial Instruments And Risk Management (Gross Notional Amount Of Outstanding Derivative Instruments) (Details) (Currency Forward Contracts [Member], USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Derivative Instruments Designated As Cash Flow Hedges [Member]
     
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Currency forward contracts $ 103,000 $ 99,000 $ 84,500
Derivative Instruments Not Designated As Cash Flow Hedges [Member]
     
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Currency forward contracts $ 62,837 $ 109,000 $ 65,900