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Concentration of Risk and Financial Instruments (Tables)
12 Months Ended
Dec. 31, 2015
Concentration of Risk and Financial Instruments [Abstract]  
Schedule of Derivative Instruments
   
Notional amount
   
Fair value
 
   
U.S. Dollars
 
Options
           
             
Buy put options (Buy dollars and Sell NIS)
    3,000       27  
                 
Sell call options (Sell dollars and Buy NIS)
    3,000       (24 )