Property and equipment
12 Months Ended
Dec. 31, 2015
Property and equipment [Abstract]  
Property and equipment
8. Property and equipment

Property and equipment consist of the following:

 

(In thousands)

   December 31,
2014
     December 31,
2015
 

Servers and network equipment

     32,109         37,332
  

Computer equipment

     1,947         1,544
  

Furniture, fixtures and office equipment

     651         856
  

Motor vehicles

     339         320
  

Leasehold improvements

     1,692         2,504
  

Total original costs

  36,738      42,556
  

Less: Accumulated depreciation

  (20,330   (24,534

Construction in progress

          14  

Total

    16,408       18,036  

Depreciation expense recognized for the years ended December 31, 2013, 2014 and 2015 are summarized as follows:

 

December 31,      December 31,      December 31,

(In thousands)

2013    2014      2015  

Cost of revenues

4,317       5,652       5,003
 

General and administrative expenses

     690       715       628
 

Sales and marketing expenses

     105       133       15
 

Total

  5,112       6,500       5,646
 

No impairment loss had been recognized for the years ended December 31, 2013, 2014 and 2015.