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Other Current Assets (Tables)
12 Months Ended
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Schedule of other current assets

   December 31, 
   2020   2019 
         
Prepaid expenses  $15   $92 
Governmental authorities   41    26 
Other receivable (Note 3c)   10    260 
           
   $66   $378