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Investment in Affiliate Company (Details 2) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Investment in Affiliate Company [Abstract]      
Investment in affiliate company, Begining Balance $ 1,248  
Cost   1,356  
Issuance of shares to third party 1,258    
Equity in net loss of affiliated companies 156 (108)
Investment in affiliate company, Ending Balance $ 1,404 $ 1,248