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Commitments and contingencies (Tables)
12 Months Ended
Dec. 31, 2014
Rental commitments [Member]  
Future Minimum Payments under Non-Cancellable Leases

Future minimum payments under non-cancellable operating leases of office rental consist of the following as of December 31, 2014:

 

(In thousands)       

2015

     2,203   

2016

     1,329   

2017

     6   
  

 

 

 
  3,538   
  

 

 

 
Bandwidth Lease Commitments [Member]  
Future Minimum Payments under Non-Cancellable Leases

Future minimum payments under non-cancellable bandwidth leases consist of the following as of December 31, 2014:

 

(In thousands)       

2015

     15,053   

2016

     608   
  

 

 

 
  15,661