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Summary of Significant Accounting Policies - Additional Information (Detail) - BRL (R$)
R$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Jan. 01, 2019
Summary of Significant Accounting Policies [Line Items]            
Incremental borrowing rate applied to lease liabilities           9.00%
Tax rate on taxable income 34.00% 34.00% 34.00% 34.00% 34.00%  
Surcharge on taxable income     10.00%      
Monthly minimum income for surcharge     R$ 20      
Annual minimum income for surcharge     R$ 240      
Social contribution tax on net income     9.00%      
Social contribution tax on net income, temporary increase     20.00%      
Loss carryforwards used to offset taxable profit     30.00%      
PIS tax rate     1.65%      
COFINS tax rate     7.60%      
Rate applicable to companies under PPM PIS     0.65%      
Rate applicable to companies under PPM COFINS     3.00%      
Federal Income Tax [member]            
Summary of Significant Accounting Policies [Line Items]            
Tax rate on taxable income     15.00%      
Bottom of range [member]            
Summary of Significant Accounting Policies [Line Items]            
Percentage of taxes reducing gross revenues     2.00%      
Top of range [member]            
Summary of Significant Accounting Policies [Line Items]            
Percentage of taxes reducing gross revenues     5.00%      
Financial Institutions and Insurance Companies [member]            
Summary of Significant Accounting Policies [Line Items]            
Social contribution tax on net income     15.00%      
Rate applicable to companies under PPM PIS     1.00%      
Rate applicable to companies under PPM COFINS     4.00%