Fair Value (Financial Instruments Measured At Fair Value On A Non-Recurring Basis) (Details) - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Commercial [Member]
Impaired loans:
Impaired loans at Fair Value	$ 103,000	$ 115,000
Commercial [Member] | Weighted Average [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Loans Held-for-sale, Measurement Input	3.48	3.48
Single-Family Residential [Member]
Impaired loans:
Impaired loans at Fair Value	$ 112,000	$ 116,000
Single-Family Residential [Member] | Minimum [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Other Real Estate Owned, Measurement Input	1.81	1.81
Single-Family Residential [Member] | Maximum [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Other Real Estate Owned, Measurement Input	3.61	3.61
Single-Family Residential [Member] | Weighted Average [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Other Real Estate Owned, Measurement Input	2.91	2.91
Non-Owner Occupied [Member]
Impaired loans:
Impaired loans at Fair Value	$ 2,803,000	$ 2,832,000
Non-Owner Occupied [Member] | Minimum [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Other Real Estate Owned, Measurement Input	3.48	3.48
Non-Owner Occupied [Member] | Maximum [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Other Real Estate Owned, Measurement Input	9.64	9.64
Non-Owner Occupied [Member] | Weighted Average [Member] | Measurement Input, Comparability Adjustment [Member]
Impaired loans:
Other Real Estate Owned, Measurement Input	5.15	5.15