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Commitments (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Summary of Contractual Obligations

The Company’s contractual obligations, not recorded on the balance sheet, at December 31, 2017, include:

 

    

2018

$

     

2019

$

     

2020

$

     

2021 and later

$

  

Leases

      14,953        11,676        10,688        60,958    

Purchase obligations

      47,614        722        100        152    

Totals

              62,567                12,398                10,788                61,110