Annual report pursuant to Section 13 and 15(d)

Income Taxes - Statutory Rate and Provisions for Income Taxes Percent (Detail)

v3.20.4
Income Taxes - Statutory Rate and Provisions for Income Taxes Percent (Detail)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Tax Disclosure [Abstract]      
Federal statutory tax rate 21.00% 21.00% 21.00%
State income taxes, net of federal benefit 5.20% 4.80% 5.70%
Nondeductible expenses 1.90% 1.80% 2.60%
Uncertain tax position 1.50% (0.90%) (1.30%)
Cares Act Enactment (2.90%) 0.00% 0.00%
Excess tax benefit (1.70%) (2.50%) (2.60%)
Credits and other (0.60%) (2.50%) 0.70%
Effective tax rate 24.40% 21.70% 26.10%