Quarterly report pursuant to Section 13 or 15(d)

Income Taxes - Additional Information (Detail)

v3.20.2
Income Taxes - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2017
Dec. 31, 2019
Tax Credit Carryforward [Line Items]            
Unrecognized tax benefits $ 0 $ 0 $ 0 $ 0    
Interest or penalties related to uncertain tax positions 0 0 0 0    
Deferred tax assets 500,000   500,000     $ 1,600,000
Deferred tax liability 2,400,000   $ 2,400,000     $ 2,400,000
Corporate income tax rate     21.00%   35.00%  
Tax Year 2016 [Member]            
Tax Credit Carryforward [Line Items]            
Tax years open to examination     2016      
Tax Year 2019 [Member]            
Tax Credit Carryforward [Line Items]            
Tax years open to examination     2019      
General and Administrative Expense [Member]            
Tax Credit Carryforward [Line Items]            
Federal and state income tax expense (benefit) $ 900,000 $ 900,000 $ 1,700,000 $ 1,200,000