Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Amount
Expected income tax expense at federal tax rate	$ 4,332	$ 4,397
State taxes net of federal benefit	1,071	1,745
Nondeductible expenses	85	103
Nontaxable income	(396)	(277)
Income tax apportionment adjustment	(743)	0
Other	145	(303)
Income tax expense	$ 4,494	$ 5,665
Percent of Pre-Tax Income
Expected income tax expense at federal tax rate	21.00%	21.00%
State taxes net of federal benefit	5.19%	8.33%
Nondeductible expenses	0.41%	0.49%
Nontaxable income	(1.91%)	(1.31%)
Income tax apportionment adjustment	(3.60%)	0.00%
Other	0.70%	(1.45%)
Total income tax expense (as a percent of pre-tax income)	21.79%	27.06%