Premises And Equipment (Premises And Equipment) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Total cost	$ 41,356	$ 39,902
Less: Accumulated depreciation	(27,505)	(26,381)
Net premises and equipment	13,851	13,521
Land [Member]
Property, Plant and Equipment [Line Items]
Total cost	3,218	2,909
Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Total cost	24,713	24,522
Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Total cost	$ 13,425	$ 12,471
Maximum [Member] | Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	30 years
Maximum [Member] | Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	10 years
Minimum [Member] | Building and leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	15 years
Minimum [Member] | Furniture, fixtures and equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated Life	3 years