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Property, Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2023
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net
Note 7 - 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
  

 

Depreciation expense for the years ended December 31, 2021, 2022 and 2023 were US$ 2,009 thousand, US$ 2,208 thousand and US$ 2,212 thousand, respectively.