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Key management personnel compensation (Details) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Short-term benefits for employees and officers R$ 46,747 R$ 40,522 R$ 37,452
Post-employment benefits 192 111 109
Key management personnel compensation  R$ 46,939 R$ 40,633 R$ 37,561