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Intangible assets (Tables)
12 Months Ended
Dec. 31, 2020
Intangible assets  
Schedule of breakdown of software cost, accumulated amortization, additions, sales and disposals for intangible assets

A breakdown of software cost, accumulated amortization, additions, sales and disposals of intangible assets is as follows:

 

 

 

 

Costs:

    

  

Balance as of January 1, 2018

 

17,172

Additions

 

58

Disposals

 

(3,315)

Reclassifications

 

(10)

Balance as of December 31, 2018

 

13,905

Additions

 

496

Balance as of December 31, 2019

 

14,401

Additions

 

1,311

Disposals

 

(1)

Balance as of December 31, 2020

 

15,711

 

 

 

Accumulated amortization:

 

  

Balance as of January 1, 2018

 

11,747

Amortization

 

1,176

Disposals

 

(609)

Reclassifications

 

(42)

Balance as of December 31, 2018

 

12,272

Amortization

 

702

Balance as of December 31, 2019

 

12,974

Amortization

 

753

Balance as of December 31, 2020

 

13,727

 

 

 

Carrying amounts as of:

 

  

December 31, 2020

 

1,984

December 31, 2019

 

1,427

December 31, 2018

 

1,633