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Net Revenue from sales and Services (Details) - BRL (R$)
R$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Net Revenue from sales and Services      
Total Net revenue R$ 1,486,273 R$ 1,264,280 R$ 947,419
Sales 1,440,259 1,229,827 914,266
Services 46,014 34,453 33,153
Learning Systems      
Net Revenue from sales and Services      
Total Net revenue 958,674 848,531 588,168
Complementary Education Services      
Net Revenue from sales and Services      
Total Net revenue 196,035 145,949 92,390
Textbooks      
Net Revenue from sales and Services      
Total Net revenue 123,358 126,679 123,143
Other products and services      
Net Revenue from sales and Services      
Total Net revenue [1] 208,206 R$ 143,121 R$ 143,717
Other products and services | Public government customers      
Net Revenue from sales and Services      
Sales R$ 81,199    
[1] In 2023 includes sales to public government customers, amounting to R$ 81,199.