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Derivative Financial Instruments (Schedule Of Fair Value Of Asset Derivatives And Liability Derivatives Included In The Consolidated Balance Sheets) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2011
Forward Foreign Exchange Contracts [Member] | Not Designated As Cash Flow Hedges [Member]
 
Derivative [Line Items]  
Asset derivatives $ 2,008
Liability derivatives   
Forward Foreign Exchange Contracts Related To Non- Functional Currency Receivable Balances [Member]
 
Derivative [Line Items]  
Asset derivatives 1,079
Liability derivatives