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Intangible Assets, Net
 12 Months Ended
Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets, Net
9.
Intangible Assets, net

 

Intangible asset is comprised of following:

 

 

 

 

 

As of December 31, 2023

 

 

As of December 31, 2024

 

 

Weighted average amortization period

 

 

Cost

 

 

Accumulated Amortization

 

 

Net

 

 

Cost

 

 

Accumulated Amortization

 

 

Net

 

 

(in years)

 

 

(in US$ thousands)

 

 

(in US$ thousands)

 

Developed technology (Note 3)

 

 

5

 

 

$

2,575

 

 

$

(1,470

)

 

$

1,105

 

 

$

2,575

 

 

$

(1,985

)

 

$

590

 

Customer relationships (Note 3)

 

 

3

 

 

 

2,600

 

 

 

(2,455

)

 

 

145

 

 

 

2,600

 

 

 

(2,600

)

 

 

—

 

Others

 

 

5

 

 

 

308

 

 

 

(284

)

 

 

24

 

 

 

308

 

 

 

(287

)

 

 

21

 

Total

 

 

4

 

 

$

5,483

 

 

$

(4,209

)

 

$

1,274

 

 

$

5,483

 

 

$

(4,872

)

 

$

611

 

 

Amortization expense was US$2.3 million, US$1.4 million and US$0.7 million for the years ended December 31, 2022, 2023 and 2024, respectively. As of December 31, 2024, the Company will record estimated amortization expenses of US$0.5 million, US$0.1 million, nil, nil and nil for the years ending December 31, 2025, 2026, 2027, 2028 and 2029, respectively.