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Accounts receivable (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Disclosure of Accounts Receivable
     2017      2016  

Credit cards

    $ 64,420      $ 65,052  

Travel agencies and airlines clearing house

      36,640        36,318  

Cargo, mail and other travel agencies

      6,798        9,278  

Trade receivables due from related parties

      318        499  

Government

      6,216        1,957  

Other

      7,366        6,735  
  

 

 

     

 

 

  
     121,758        119,839  

Provision for impairment

      (3,673 )       (3,739 ) 
  

 

 

     

 

 

  
   $ 118,085      $ 116,100  
  

 

 

     

 

 

  

Current

      115,641        114,143  

Non-current

      2,444        1,957  
  

 

 

     

 

 

  
   $ 118,085      $ 116,100  
  

 

 

     

 

 

  
Maturity of Portfolio of Accounts Receivable

The maturity of the portfolio at each year-end is as follows:

 

     2017      2016  

Neither past due nor impaired

    $ 115,685      $ 110,524  

Past due 1 to 30 days

      1,286        711  

Past due 31 to 60 days

      617        914  

More than 60 days

      497        3,951  
  

 

 

     

 

 

  
     118,085        116,100  

Impaired

      3,673        3,739  
  

 

 

     

 

 

  

Total accounts receivable

    $ 121,758      $ 119,839  
  

 

 

     

 

 

  
Provision for Impairment of Receivables

Movements in the provision for impairment of receivables are as follows:

 

     2017      2016      2015  

Balance at beginning of year

    $ (3,739 )     $ (2,997 )     $ (3,691 ) 

(Additions) reversals

      (879 )       (1,511 )       71  

Write-offs

      945        769        623  
  

 

 

     

 

 

     

 

 

  

Balance at end of year

    $ (3,673 )     $ (3,739 )     $ (2,997 )