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Intangible Assets, net
12 Months Ended
Dec. 31, 2018
Intangible Assets, net [Abstract]  
Intangible Assets, net

11.Intangible Assets, net

 

Intangible assets as of December 31, 2017 and 2018 consisted of the followings:

 

   December 31,   December 31, 
   2017   2018 
Computer software at cost  $27,340    31,025 
Accumulated amortization   (7,291)   (10,156)
   $20,049    20,869 

 

Amortization expenses were $2,631 and $3,383 for the years ended December 31, 2017 and 2018, respectively.