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Income Taxes - Additional Information (Detail)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Income Tax Disclosure [Abstract]        
Effective tax rates 16.00% 13.80% 15.70% 17.60%
Effective income tax rate net operating loss, CARES Act       21.00%
Federal statutory income tax rate,       35.00%