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Short-Term Bank Credit And Loans (Schedule Of Short-Term Bank Credit And Loans) (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Short-term Debt [Line Items]    
Short-term bank credit and loans $ 2,998 $ 15,115
Weighted average interest rate 2.40%  
Short-Term Loans [Member]
   
Short-term Debt [Line Items]    
Short-term bank credit and loans 158 10,537
Interest rate, minimum 2.50%  
Interest rate, maximum 7.45%  
Short-Term Bank Credit [Member]
   
Short-term Debt [Line Items]    
Short-term bank credit and loans $ 2,840 $ 4,578
Interest rate, minimum 0.00%  
Interest rate, maximum 6.23%