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Property, Plant and Equipment, Net (Tables)
12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment, Net

December 31

2019

2020

US$ thousands

 

Machinery and equipment

13,374

15,494

Office furniture and equipment

924

991

Leasehold improvements

2,528

2,884

 

Property, plant and equipment

16,826

19,369

 

Accumulated depreciation

(13,252

)

(15,259

)

 

Property, Plant and equipment, net

3,574

4,110