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Taxes on Income (Details Narrative) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Israel Tax Authority [Member]    
Corporate income tax rate 23.00% 23.00%
Net operating losses carried forward $ 19,773  
US Tax Authority [Member]    
Net operating losses carried forward $ 492,487  
Operating loss carryforwards, expiration 2035