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1 Corporate information (Details Narrative)
$ / shares in Units, R$ in Thousands, $ in Thousands
 1 Months Ended 12 Months Ended
Nov. 09, 2020
Nov. 03, 2020
Oct. 22, 2020
BRL (R$)
Jul. 20, 2020
May 05, 2020
Mar. 10, 2020
USD ($)
shares
Mar. 10, 2020
BRL (R$)
shares
Feb. 06, 2020
USD ($)
$ / shares
shares
Feb. 06, 2020
BRL (R$)
shares
Jul. 23, 2019
USD ($)
shares
Jul. 23, 2019
BRL (R$)
shares
Jul. 07, 2019
Jun. 18, 2019
Apr. 03, 2019
Mar. 29, 2019
Nov. 05, 2020
Dec. 31, 2020
BRL (R$)
shares
Dec. 31, 2019
BRL (R$)
shares
Jan. 31, 2020
Jul. 18, 2019
shares
Dec. 31, 2018
shares
Disclosure of subsidiaries [line items]                                          
Deferred revenues                                 R$ 2,361        
Amount of legal proceedings                                 R$ 6,545        
Description of exchanging and rights of shares                       Exchanging one common share as 28 Class A or Class B common shares                  
Number of shares issed (shares) | shares                                 93,146,731 89,744,275     1,443,541
Share issuance costs                                 R$ 19,704 R$ 79,670      
Transferred amount to bank accounts                                 R$ 961,438        
Guardaya empreendimentos and participacoes s.a. ("guardaya") [member]                                          
Disclosure of subsidiaries [line items]                                          
Percentage of voting equity interests acquired                             100.00%            
Sociedade universitaria redentor s.a. (uniredentor) [member]                                          
Disclosure of subsidiaries [line items]                                          
Percentage of voting equity interests acquired                                     100.00%    
Sociedade padrao de educacao Superior ltda [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary     100.00%                                    
Description of acquiree     The purchase price is R$ 360,000, adjusted by the Net Debt at the closing date, of which: (i) 100% is payable in cash on the transaction closing date.                                    
Amount of purchase price     R$ 360,000                                    
Uniao educacional do planalto central s.a. ("UEPC") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary                         15.00%   15.00%            
Percentage of voting equity interests acquired                         30.00%   15.00%            
Guardaya empreendimentos and participacoes s.a. ("guardaya") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary                             100.00%            
Medcel editora and CBB web [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary                             100.00%            
Percentage of voting equity interests acquired                             100.00%            
Instituto educacional santo agostinho s.a. ("FASA") [member]                                          
Disclosure of subsidiaries [line items]                                          
Description of acquiree                           The purchase price of R$ 201,565 is comprised by: i) R$ 102,330 paid in cash on the acquisition date; ii) R$ 39,695 payable in April 2020; iii) R$ 29,770 payable in April 2021; and iv) R$ 29,770 payable in April 2022, adjusted by the IPCA rate + 4.1% per year. This transaction was strategic to the Company and was accounted for under IFRS 3 – Business Combinations. There isare no contingent consideration associated with the acquisition of FASA.              
Percentage of voting equity interests acquired                           90.00%              
Centro Universitario Sao Lucas Ltda ("UniSL") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary         100.00%                                
Instituicao de pesquisa medica e servicos tecnologicos da area da saude s.a. ("PEBMED") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary       100.00%                                  
Faculdade de Ensino Superior da Amazonia Reunida ("FESAR") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary   100.00%                                      
Faculdade de Ciencias Medicas da Paraiba ("FCMPB") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary 100.00%                                        
Percentage of revenue generated                                   99.00%      
MedPhone Tecnologia em Saude Ltda ("MedPhone") [member]                                          
Disclosure of subsidiaries [line items]                                          
Proportion of ownership interest in subsidiary                               100.00%          
Class A common shares [member]                                          
Disclosure of subsidiaries [line items]                                          
Number of shares issed (shares) | shares                   13,888,887 13,888,887                    
Class A common shares [member] | Initial public offering [member]                                          
Disclosure of subsidiaries [line items]                                          
Number of shares issed (shares) | shares                   15,805,841 15,805,841                 13,744,210  
Proceeds from issue of shares                     R$ 992,778                    
Net proceeds from issue of shares                     913,108                    
Fee and commission expense                     59,566                    
Other offering expenses                     20,104                    
Share issuance costs                     R$ (79,670)                    
Number of additional common shares issued | shares               3,019,928 3,019,928                        
Class A common shares [member] | Initial public offering [member] | Underwriters [member]                                          
Disclosure of subsidiaries [line items]                                          
Number of shares issed (shares) | shares                   1,916,954 1,916,954                    
Other offering expenses             R$ 1,066                            
Additional shares gross proceeds             30,884                            
Net proceeds of additional shares             R$ 29,819                            
Class A common shares [member] | Initial public offering [member] | Shareholders [member]                                          
Disclosure of subsidiaries [line items]                                          
Other offering expenses                 R$ 18,638                        
Number of additional common shares issued | shares               9,406,812 9,406,812                        
Additional shares gross proceeds                 R$ 358,286                        
Net proceeds of additional shares                 R$ 339,648                        
Class A common shares [member] | Over allotments [member] | Underwriters [member]                                          
Disclosure of subsidiaries [line items]                                          
Number of shares issed (shares) | shares                   2,061,631 2,061,631                    
Class A common shares [member] | USD [member] | Initial public offering [member]                                          
Disclosure of subsidiaries [line items]                                          
Proceeds from issue of shares | $                   $ 263,888                      
Net proceeds from issue of shares | $                   242,711                      
Fee and commission expense | $                   15,833                      
Other offering expenses | $                   $ 5,344                      
Class A common shares [member] | USD [member] | Initial public offering [member] | Underwriters [member]                                          
Disclosure of subsidiaries [line items]                                          
Other offering expenses | $           $ 228                              
Number of additional common shares issued | shares           240,552 240,552                            
Additional shares gross proceeds | $           $ 6,615                              
Net proceeds of additional shares | $           6,387                              
Class A common shares [member] | USD [member] | Initial public offering [member] | Shareholders [member]                                          
Disclosure of subsidiaries [line items]                                          
Other offering expenses | $               $ 4,202                          
Additional offering price | $ / shares               $ 27.50                          
Additional shares gross proceeds | $               $ 83,048                          
Net proceeds of additional shares | $               $ 78,846                          
Class A common shares [member] | BRAZIL [member]                                          
Disclosure of subsidiaries [line items]                                          
Proceeds from issue of shares             R$ 294,312                            
Class A common shares [member] | BRAZIL [member] | USD [member]                                          
Disclosure of subsidiaries [line items]                                          
Proceeds from issue of shares | $           $ 68,060                              
Class B common shares [member]                                          
Disclosure of subsidiaries [line items]                                          
Description of exchanging and rights of shares                       Class B common shares is entitled to 10 votes per share