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Short-Term Investments (Tables)
 6 Months Ended
Jun. 30, 2019
Short-term Investments [Abstract]  
Schedule of Marketable Debt Securities
  The following tables summarize the Company’s marketable debt securities as of June 30, 2019 and December 31, 2018:

 

   As of June 30, 2019 
   Amortized Cost   Unrealized gains   Realized
gains		   Fair value 
US Treasury Bond  $2,503   $       (*)  $      -   $2,503 

 

    As of December 31, 2018 
    Amortized Cost    Unrealized gains    Realized gains    Fair value 
US Treasury Bond  $-   $ -   $-   $- 

 

(*) Less than 1.