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Taxes on Income (Details Narrative) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2016
Jan. 31, 2016
Dec. 31, 2018
Dec. 31, 2017
Federal corporate tax rate     21.00%  
Tax rate on income of beneficiary enterprises     20.00%  
Net carry forward tax loss     $ 71,000  
Net loss carryforwards percentage     80.00%  
Israel Tax Authority [Member]        
Federal corporate tax rate 25.00% 26.50% 23.00% 24.00%
Revised corporate tax rate 23.00% 25.00%    
Revised tax rate on income of preferred enterprises     10.00%  
Tax rate on income of beneficiary enterprises     23.00%  
Net carry forward tax loss     $ 40,000  
Israel Tax Authority [Member] | 2018 and Thereafter [Member]        
Federal corporate tax rate     23.00%  
Israel Tax Authority [Member] | Arising Before January 1, 2018 [Member]        
Net carry forward tax loss     $ 36,000  
Operating loss carryforwards expiration description     expires until 2037  
Israel Tax Authority [Member] | Limited [Member]        
Net carry forward tax loss     $ 4,000  
Germany [Member]        
Federal corporate tax rate     15.825%  
Corporate trade tax rate     17.15%