Income Taxes - Reconciliation between Federal Statutory Income Tax Rate and Effective Income Tax Rate (Details)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%
State income taxes, net of the federal tax effect	6.80%	7.50%	6.80%
Share-based compensation expense on incentive stock options and ESPP	(0.80%)	(1.60%)	(0.30%)
Qualified affordable housing project tax credits	(0.40%)	(0.20%)	(0.50%)
Tax-exempt interest income	(1.60%)	(1.00%)	(0.80%)
Other, net	0.20%	0.50%	0.80%
Effective income tax rate	25.20%	26.20%	27.00%