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Short-Term Bank Credit And Loans (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Short-term Debt [Line Items]    
Short-term bank credit and loans $ 181 $ 2,998
Weighted average interest rate 2.40%  
Short-Term Loans [Member]
   
Short-term Debt [Line Items]    
Short-term bank credit and loans   158
Interest rate, minimum 2.50%  
Short Term Bank Credit [Member]
   
Short-term Debt [Line Items]    
Short-term bank credit and loans $ 181 $ 2,840
Interest rate, minimum 3.42%  
Interest rate, maximum 5.00%