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ACQUIRED INTANGIBLE ASSETS, NET
 12 Months Ended
Dec. 31, 2018
ACQUIRED INTANGIBLE ASSETS, NET  
ACQUIRED INTANGIBLE ASSETS, NET

10.         ACQUIRED INTANGIBLE ASSETS, NET

 

Intangible assets, net, consisted of the following:

 

 

 

 

 

 

 

 

As of December 31, 

 

    

2017

    

2018

Trademark

 

 —

 

1,367

Student base

 

 —

 

3,632

 

 

 

 

 

Total costs

 

 —

 

4,999

Less: accumulated amortization

 

 —

 

(508)

 

 

 

 

 

Intangible assets, net

 

 —

 

4,491

 

Amortization expenses for acquired intangible assets for the years ended December 31, 2016, 2017 and 2018 were nil,  nil and $529, respectively. As of December 31, 2018, the estimated amortization expenses related to intangible assets for next five years is expected to be $1,133,  $1,133,  $1,133,  $714 and $208 respectively, and $170 thereafter.