Stock-Based Compensation (Summary Of Non-Vested Options And Restricted Stock) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Options, Granted	0
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Options, Beginning Balance	36,750
Non-vested Options, Vested	(17,974)
Non-vested Options, Cancelled/Forfeited	(2,376)
Non-vested Options, Granted	0
Non-vested Options, Ending Balance	16,400	36,750
Non-vested Options, Weighted Average Exercise Price Per Share, Beginning Balance	$ 22.90
Non-vested Options, Weighted Average Exercise Price Per Share, Vested	21.97
Non-vested Options, Weighted Average Exercise Price Per Share, Cancelled/Forfeited	24.02
Non-vested Options, Weighted Average Exercise Price Per Share, Granted	0.00
Non-vested Options, Weighted Average Exercise Price Per Share, Ending Balance	$ 23.76	$ 22.90
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-vested Restricted Stock, Shares, Beginning Balance	39,176
Non-vested Restricted Stock, Shares, Vested	(16,243)
Non-vested Restricted Stock, Shares, Cancelled	(2,841)
Non-vested Restricted Stock, Shares, Granted	14,872	21,507	16,504
Non-vested Restricted Stock, Shares, Ending Balance	34,964	39,176
Non-vested Restricted Stock, Weighted Average Weighted Average Grant Date Fair Value, Beginning Balance	$ 23.28
Non-vested Restricted Stock, Weighted Average Grant Date Fair Value, Vested	22.51
Non-vested Restricted Stock, Weighted Average Grant Date Fair Value, Cancelled	22.30
Non-vested Restricted Stock, Weighted Average Grant Date Fair Value, Granted	22.51
Non-vested Restricted Stock, Weighted Average Weighted Average Grant Date Fair Value, Ending Balance	$ 23.40	$ 23.28