Income Taxes - Statutory Rate and Provisions for Income Taxes Percent (Detail)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Federal statutory tax rate	21.00%	21.00%	21.00%
State income taxes, net of federal benefit	4.80%	5.20%	4.80%
Nondeductible expenses	1.40%	1.90%	1.80%
Uncertain tax position	0.10%	1.50%	(0.90%)
Cares Act Enactment	0.00%	(2.90%)	0.00%
Excess tax benefit	(1.50%)	(1.70%)	(2.50%)
Credits and other	(1.20%)	(0.60%)	(2.50%)
Effective tax rate	24.60%	24.40%	21.70%