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Derivative Instruments (Schedule Of Fair Value Of Derivatives Designated As Fair Value Hedges) (Details) - Not Designated As Hedging Instrument - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Derivative [Line Items]    
Fair Value, Asset Derivatives $ 80 $ 181
Fair Value, Liability Derivatives 428 474
Foreign Currency Derivatives | Prepaid and other current assets    
Derivative [Line Items]    
Fair Value, Asset Derivatives 181 80
Foreign Currency Derivatives | Other current liabilities    
Derivative [Line Items]    
Fair Value, Liability Derivatives $ 474 $ 428