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Long-term deferred expenses (Tables)
12 Months Ended
Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of Long-Term Deferred Expenses

Long-term deferred expenses consist of the following:

 

     Weighted average
amortization period
     As of December 31,  
      2014      2013  

Rent of advertising spaces

     5 years       $ 384       $ 484   

Concession approval fees

     3 years         262         433   
     

 

 

    

 

 

 
$ 646    $ 917