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Other Accounts Receivable and Prepaid Expenses (Tables)
 12 Months Ended
Dec. 31, 2021
Other Accounts Receivable And Prepaid Expenses [Abstract]  
Schedule of other accounts receivable and prepaid expenses
   December 31, 
   2021   2020 
   USD 
         
Government authorities  $48   $18 
Prepaid expenses and others  $881   $1,039 
           
   $929   $1,057