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Property, Plant and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment, net
   
December 31
 
   
2022
   
2023
 
   
US$ thousands
 
             
Machinery and equipment
   
19,298
     
20,460
 
Office furniture and equipment
   
1,190
     
1,229
 
Leasehold improvements
   
3,472
     
3,547
 
                 
Property, plant and equipment
   
23,960
     
25,236
 
                 
Accumulated depreciation
   
(19,472
)
   
(21,684
)
                 
Property, Plant and equipment, net
   
4,488
     
3,552