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Transactions with Related Parties - Summary of Transactions were Carried Out with Related Parties (Detail) - BRL (R$)
R$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Disclosure of transactions between related parties [line items]    
Sales of services R$ 11 R$ 159
Purchases of goods and services (10,480) (8,127)
Associates (legal and administration services) [member]    
Disclosure of transactions between related parties [line items]    
Sales of services 11 159
Entity controlled management personnel [member]    
Disclosure of transactions between related parties [line items]    
Purchases of goods and services (10,029) (7,730)
Associate (transaction services) [member]    
Disclosure of transactions between related parties [line items]    
Purchases of goods and services R$ (451) R$ (397)