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Commitments and contingent liabilities (Tables)
12 Months Ended
Dec. 31, 2018
Text block [abstract]  
Summary of Future Minimum Annual Rental Commitments

As at December 31, 2018, the minimum annual rental commitments are as follows:

 

2019

     13,503  

2020

     12,823  

2021

     11,673  

2022

     11,090  

2023

     9,848  

Thereafter

     21,803  
  

 

 

 

Total

     80,740