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Cash and Restricted Deposits (Tables)
12 Months Ended
Dec. 31, 2019
Cash and Restricted Deposits [Abstract]  
Schedule of components of cash

   December 31, 
   2018   2019 
   Thousands
USD
   Thousands
USD
 
         
Bank accounts- dominated in NIS   583    348 
Bank accounts- dominated in USD   3,167    3,536 
Bank accounts- other   3    10 
    3,753    3,894