Income Taxes (Reconciliation of Federal Income Tax Rate to Effective Income Tax Rate) (Details)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Taxes [Abstract]
Federal statutory rate	21.00%	21.00%
Tax-exempt income on securities and loans	(1.30%)	(1.40%)
Tax-exempt BOLI income	(1.50%)	(2.90%)
State income tax, net of federal tax benefit	5.10%	4.80%
Tax credits	(1.20%)	(1.50%)
Other	0.10%	0.30%
Effective Income Tax Rate Reconciliation, Percent, Total	22.20%	20.30%