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MARKETABLE SECURITIES (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Marketable Securities [Abstract]      
Maximum maturity period of government bonds 1 year    
Proceeds from sale of marketable securities $ 122 $ 5,161 $ 513
Loss (income) from sale of marketable securitites $ (330) $ 3,133 $ 2,114