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Transactions With Related Parties (Tables)
6 Months Ended
Jun. 30, 2021
Disclosure of related party [text block] [Abstract]  
Schedule of compensation to key management personnel for employee services
   Six months ended 30,   Year ended December 31, 
   2021   2020   2020 
   U.S. dollars in thousands 
             
Salaries, management and consulting fees and other short-term benefits   122    159    276 
Pension, post retirement and other benefits   
-
    2    2 
Share-based payments   23    12    51 
                
    145    173    329 
                
Number of persons   8    8    8