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Share-based payments (Tables)
 12 Months Ended
Dec. 31, 2023
Disclosure of terms and conditions of share-based payment arrangement [abstract]  
Summary of Terms and Conditions, Relating to the Grants of the Non-vested Stock Award under the Equity Compensation Plan
A summary of the terms and conditions, properly approved by the Compensation Committee of our Board of Directors, relating to the grants of the non-vested stock award under share-based payments plans is as follows:
Grant date
Number
of instruments
Vesting conditions
Contractual
life
February, 20181,316
15% first three anniversaries
25% fourth
30% fifth anniversary
5 years
February, 201915,9511% first month
33% first three anniversaries		3 years
June, 20199,25633% first three anniversaries3 years
June, 201997733% first three anniversaries3 years
August, 20191,03933% first three anniversaries3 years
February, 202024,650
1% first month
33% first three anniversaries
3 years
February, 202132,85220% first five anniversaries5 years
February, 2021103,80233% first three anniversaries3 years
April, 20211,14533% first three anniversaries3 years
February, 202213,94333% first three anniversaries3 years
June, 202220,36833% first three anniversaries3 years
June, 202299433% first three anniversaries3 years
February, 202330,56733% first three anniversaries3 years
June, 202310,80933% first three anniversaries3 years
September, 202363433% first three anniversaries3 years
Summary of Non-vested Stock Award Activity
A summary of the non-vested stock award activity under the plan as of December 31, 2023, 2022 and 2021 with changes during these years is as follows (in number of shares):
 202320222021
Non-vested as of January 1138,243157,823153,921
Granted42,01035,305137,799
Vested(59,066)(54,501)(132,880)
Forfeited(443)(384)(1,017)
Non-vested as of December 31120,744138,243157,823