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Long-Term Deferred Expenses
 12 Months Ended
Dec. 31, 2013
Goodwill And Intangible Assets Disclosure [Abstract]  
Long-Term Deferred Expenses

9. Long-term deferred expenses

Long-term deferred expenses consist of the following:

 

     Weighted average
amortization period		      As of December 31,  
        2012      2013  

Rent of advertising spaces

      5 years       $ —         $ 484   

Concession approval fees

      3 years         —           433   
     

 

 

     

 

 

  
      $ —         $ 917   
     

 

 

     

 

 

  

The amortization of the long-term deferred expenses was allocated to the cost of revenues of $66, $0 and $0 for the years ended December 31, 2013, 2012 and 2011, respectively.