Loans And Related Allowances For Loan Losses (Average of Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Financing Receivable, Impaired [Line Items]
Average Investment	$ 15,299	$ 17,053	$ 15,257	$ 14,892
Interest income recognized on an accrual basis	64	73	131	150
Interest income recognized on a cash basis	3	4	4	12
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	132	258	138	270
Interest income recognized on an accrual basis	1	3	3	6
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	3,258	4,807	3,182	4,853
Interest income recognized on an accrual basis	36	38	73	76
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	282	307	285	310
Interest income recognized on an accrual basis	3	4	6	9
Acquisition and development- All other A&D [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	8,515	7,772	8,436	5,306
Interest income recognized on an accrual basis	3	3	6	6
Interest income recognized on a cash basis			1
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	9	27	16	24
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	2,450	2,941	2,477	3,261
Interest income recognized on an accrual basis	21	25	43	53
Interest income recognized on a cash basis		2		10
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	634	925	709	854
Interest income recognized on a cash basis	3	2	3	2
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	$ 19	$ 16	$ 14	$ 14

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5212-111524

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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