Shareholders' equity (Details) - BRL (R$) R$ in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Notes and other explanatory information [abstract] | ||
| Capital reserve | R$ 388,236 | R$ 373,020 |
| Special Reserve of goodwill | 353,604 | 353,604 |
| Long-term incentive plan | 10,635 | 19,416 |
| Other capital reserves | R$ 23,997 |