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Financial Income (Expenses), Net
 12 Months Ended
Dec. 31, 2019
Other Income and Expenses [Abstract]  
Financial Income (Expenses), Net
Note 14 - Financial Income (Expenses), Net


   
Year ended December 31
  
   
2017
    
2018
    
2019
  
   
US$ thousands
  
                   
Interest income
    
527
      
840
      
2,295
  
Discount on marketable securities, net
    
(217
)
    
(32
)
    
(144
)
Exchange rate differences, net
    
(45
)
    
208
      
(357
)
Bank charges
    
(109
)
    
(93
)
    
(148
)
                         
     
156
      
923
      
1,646