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Other accounts payable and accrued expenses (Tables)
12 Months Ended
Dec. 31, 2021
Accounts Payable and Accrued Liabilities [Abstract]  
Schedule of other accounts payable and accrued expenses
   
December 31
 
   
2020
   
2021
 
   
US$ thousands
 
             
Accrued expenses
   
2,739
     
8,664
 
Employee benefits
   
6,154
     
6,562
 
Government authorities
   
632
     
577
 
Other payables
   
3,428
     
2,779
 
     
12,953
     
18,582