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Income Taxes (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Income Tax Contingency [Line Items]    
Effective federal income tax rate (as a percent) (0.80%) 24.20%
Texas Margin Tax, maximum statutory effective rate 0.75%  
COVID-19    
Income Tax Contingency [Line Items]    
Deferred payroll tax payments $ 1.2