Income Taxes - General (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of the entity's provision for income taxes at statutory rates to the provision for income taxes at the entity's effective tax rate
Federal income tax statutory rate (as a percent)	21.00%	21.00%	21.00%
State income taxes, net of federal benefit (as a percent)	5.40%	5.50%	5.60%
Tax rate revaluation ( as a percent)		(0.10%)	(0.60%)
Other (as a percent)	(0.20%)	0.10%	(0.20%)
Effective income tax rate (as a percent)	26.20%	26.50%	25.80%