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Property, Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment, Net
Note 7 - Property, Plant and Equipment, Net
 
 
 
December 31
 
 
 
2021
 
 
2022
 
 
 
US$ thousands
 
 
 
 
 
 
 
 
 
 
Machinery and equipment
 
 
17,305
 
 
 
19,298
 
Office furniture and equipment
 
 
1,129
 
 
 
1,190
 
Leasehold improvements
 
 
3,406
 
 
 
3,472
 
 
 
 
 
 
 
 
 
 
Property, plant and equipment
 
 
21,840
 
 
 
23,960
 
 
 
 
 
 
 
 
 
 
Accumulated depreciation
 
 
(17,264
)
 
 
(19,472
)
 
 
 
 
 
 
 
 
 
Property, Plant and equipment, net
 
 
4,576
 
 
 
4,488
 

Depreciation expense for the years ended December 31, 2020, 2021 and 2022 were US$ 2,000 thousand, US$ 2,009 thousand and US$ 2,208 thousand, respectively.