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Intangible assets
 12 Months Ended
Dec. 31, 2022
Intangible assets [Abstract]  
Intangible assets
12
Intangible assets
 
Intangible assets as of December 31, 2022 and 2021, are summarized as follows:
 
   
2022
  
   
Net
balances at
beginning
of year
    
Additions
    
Transfers
and others
    
Amortization
    
Net
balances at
year end
    
Estimated
useful life
(years)
  
Software
  
$
34,583
    
$
6,165
 
  
$
-
    
$
8,823
    
$
31,925
    
3 y 5
  
Trademark (a)
    
125,528
      
-
       -      
-
      
125,528
    
Indefinite
  
   
$
160,111
    
$
6,165
    
$
-
    
$
8,823
    
$
157,453
          

   
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
          
 

 (a)
Corresponds to the rights on the Marmex trademark associated with the 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.
 
The accumulated amortization of intangible assets as of December 31, 2022 and 2021, is $10,422 and $1,599, respectively.