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MARKETABLE SECURITIES (Schedule of Marketable Securities) (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Financial assets measured at fair value through profit or loss:    
Participation certificates in trust funds - Level 1 $ 1,042
Corporate bonds and government treasury notes - Level 2 1,086
Marketable securities $ 2,128