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Significant Accounting Policies (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Significant Accounting Policies (Textual)    
Percentage of deposits. 8.33%  
Severance expense $ 10 $ 10
Income tax benefit, description The tax benefit as the largest amount that is more than 50% (cumulative basis) likely to be realized upon ultimate settlement.  
Unrecognized tax
Future investment description The fair value of the Right of Future Investment immediately prior to the Modification Date (December 2017) was NIS 1,042,000 (approximately $280 according to the exchange rate as of the Modification Date). Such amount was reclassified from a derivative liability to additional paid-in capital.  
Derivative liability $ 0 $ 0