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Intangible assets (Tables)
 12 Months Ended
Dec. 31, 2021
Intangible assets [Abstract]  
Summary of Intangible Assets
Intangible assets as of December 31, 2021 and 2020, are summarized as follows:
 
   
2021
  
   
Net
balances at
beginning
of year
    
Additions
    
Transfers
and others
    
Amortization
    
Net
balances at
year end
    
Estimated
useful life
(years)
  
Software
  
$
25,722
    
$
9,305
 (b)
  
$
132
    
$
576
    
$
34,583
    
3 y 5
  
Trademark (a)
    
125,528
      
-
       -      
-
      
125,528
    
Indefinite
  
   
$
151,250
    
$
9,305
    
$
132
    
$
576
    
$
160,111
          

   
2020
  
   
Net
balances at
beginning
of year
    
Additions
    
Transfers
and others
    
Amortization
    
Net
balances at
year end
    
Estimated
useful life
(years)
  
Software
  
$
15,956
    
$
10,508
    
$
-
    
$
742
    
$
25,722
    
3 y 5
  
Trademark (a)
    
125,528
      
-
      
-
      
-
      
125,528
    
Indefinite
  
   
$
141,484
    
$
10,508
    
$
-
    
$
742
    
$
151,250
          
 

 (a)
Corresponds to the rights on the Marmex trademark associated with the specialized maritime division segment, specifically the offshore vessels operation. This trademark is subject to annual impairment testing (see Note 13).
 

 (b)
Corresponds mainly to the SAP Hana system upgrade project.