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Intangible assets
 12 Months Ended
Dec. 31, 2025
Intangible assets and goodwill [abstract]  
Intangible assets Intangible assets
Below are the changes in the items:
Amortization
Cost as of
December 31,
2024		AdditionsAcquisitions through business combinationsDisposals (1)Accumulated
as of
December 31,
2024		Acquisitions through business combinationsDisposals (1)For the periodAccumulated
as of
December 31,
2025		Carrying
amount as of
December 31,
2025
Own systems development expenses122,252,283 80,755,427 18,272,405 45,075,829 31,182,949 17,477,030 13,222,548 21,431,224 56,868,655 119,335,631 
Total122,252,283 80,755,427 18,272,405 45,075,829 31,182,949 17,477,030 13,222,548 21,431,224 56,868,655 119,335,631 
Amortization
Cost as of
December 31,
2023		AdditionsDisposals (1)Accumulated
as of
December 31,
2023		Disposals (1)For the periodAccumulated
as of
December 31,
2024		Carrying
amount as of
December 31,
2024
Own systems development expenses119,667,312 74,379,148 71,794,177 24,740,768 18,400,843 24,843,024 31,182,949 91,069,334 
Total119,667,312 74,379,148 71,794,177 24,740,768 18,400,843 24,843,024 31,182,949 91,069,334 
(1)Includes write-off of fully depreciated items.