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INVESTMENT (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Artemis Therapeutics, Inc. [Member]      
Investments in and Advances to Affiliates [Line Items]      
Ownership interest 14.20% 23.00% 23.00%
Carrying value $ 0    
Underlying net assets 130    
Market value $ 162    
Entity Owned [Member]      
Investments in and Advances to Affiliates [Line Items]      
Ownership interest 14.20%    
Artemis Therapeutics, Inc. [Member]      
Investments in and Advances to Affiliates [Line Items]      
Common stock purchased 198,311 9,915,555 9,915,555
Carrying value   $ 0  
Underlying net assets   150  
Market value   $ 99