Income Taxes (Reconciliation Income Tax Expense And Statutory Income Tax Rates) (Details) - USD ($) $ in Thousands		12 Months Ended
	Dec. 22, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Amount
Computed tax at applicable statutory rate		$ 8,313	$ 7,370	$ 7,553
Tax-exempt interest and dividends, net		(728)	(1,011)	(1,569)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Amount		0	0	0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount		(177)	(286)	(247)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		0	0	3,461
State income taxes, net of Federal income tax benefit		753	734	354
Other, net		(444)	217	112
Applicable income taxes		$ 7,717	$ 7,024	$ 9,664
Percent
Computed tax at applicable statutory rate	35.00%	21.00%	21.00%	35.00%
Tax-exempt interest and dividends, net		(2.00%)	(3.00%)	(7.00%)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Percent		0.00%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Percent		0.00%	(1.00%)	(1.00%)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		0.00%	0.00%	16.00%
State income taxes, net of Federal income tax benefit		2.00%	2.00%	2.00%
Other, net		(1.00%)	1.00%	0.00%
Applicable income taxes		20.00%	20.00%	45.00%