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Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2017
Disclosure Of Intangible Assets [Abstract]  
Summary of Intangible Assets

Computer software

 

 

 

2017

 

 

2016

 

 

 

US$’000

 

 

US$’000

 

Cost

 

 

 

 

 

 

 

 

At January 1

 

 

510

 

 

 

387

 

Addition

 

 

10

 

 

 

126

 

Disposals

 

 

(18

)

 

 

Exchange difference

 

 

24

 

 

 

(3

)

At December 31

 

 

526

 

 

 

510

 

Accumulated amortization

 

 

 

 

 

 

 

 

At January 1

 

 

(337

)

 

 

(294

)

Amortization

 

 

(49

)

 

 

(46

)

Disposals

 

 

18

 

 

 

Exchange difference

 

 

(20

)

 

 

3

 

At December 31

 

 

(388

)

 

 

(337

)

Net book value

 

 

 

 

 

 

 

 

At December 31

 

 

138

 

 

 

173