Long-Term Debt (Components Of Long-Term Debt) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2017
Debt Instrument [Line Items]
Long-term debt	$ 16,495		$ 16,495			$ 16,495
Junior subordinated debentures, interest rate			5.83%			5.09%
Junior subordinated debentures, due date			Jun. 30, 2038			Jun. 30, 2038
Percent over three month LIBOR Rate	3.50%		3.50%			3.50%
Junior subordinated debenture, Threshold in days			90 days			90 days
Debt Instrument, Redemption Price, Percentage			100.00%
Capital Securities, Redemption Price, Percentage			100.00%
Interest on long-term debt	$ 239	$ 195	$ 680	$ 565
Scenario, Forecast
Debt Instrument [Line Items]
Interest on long-term debt					$ 1,000