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Securities - Summary of securities classified at fair value through profit and loss and at fair value through other comprehensive income (Parenthetical) (Detail) - BRL (R$)
R$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of financial assets [abstract]          
Short-term deposits, classified as cash equivalents R$ 152,200 R$ 123,817 R$ 142,446 R$ 69,647 R$ 261,317