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Geographic Information and Major Customer Data (Tables)
3 Months Ended
Mar. 31, 2021
Segment Reporting [Abstract]  
Summary of Revenue within Geographic Areas

The following is a summary of revenues within geographic areas:

 

   

Three Months Ended

March 31,

 
    2021     2020  
United States   $ 92     $ 110  
New Zealand     9       -  
Israel     1       1  
Europe     1       3  
Total   $ 103     $ 114