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Accrued expenses payable (Tables)
12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Summary of Accrued Expenses Payable
     2017      2016  

Accruals and estimations

   $ 9,059      $ 5,849  

Labor related provisions

     44,188        31,785  

Liability for social security contributions

     6,432        5,700  

Other

     642        1,028  
  

 

 

    

 

 

 
   $ 60,321      $ 44,362