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MARKETABLE SECURITIES (Tables)
12 Months Ended
Dec. 31, 2015
Marketable Securities [Abstract]  
Schedule of investments in marketable securities
    2014   2015
    Amortized   Gross unrealized  

Fair

market

  Amortized   Gross unrealized  

Fair

market

    Cost   gains   value   cost   gains   value
                         
Government bonds   $ 535   $ -   $ 535   $ -   $ -   $ -