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Loans And Related Allowances For Loan Losses (Average of Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Impaired [Line Items]
Average Investment	$ 15,170	$ 12,145
Interest income recognized on an accrual basis	287	380
Interest income recognized on a cash basis	87	134
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	222	1,432
Interest income recognized on an accrual basis	12	12
Interest income recognized on a cash basis		66
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	4,322	5,385
Interest income recognized on an accrual basis	149	195
Interest income recognized on a cash basis	73	59
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	244	443
Interest income recognized on an accrual basis	11	24
Acquisition and development- All other A&D [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	6,505	355
Interest income recognized on an accrual basis	19	12
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	26	265
Interest income recognized on an accrual basis		13
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	2,971	3,632
Interest income recognized on an accrual basis	96	124
Interest income recognized on a cash basis	10	2
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	870	611
Interest income recognized on a cash basis	4	7
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	$ 10	$ 22

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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=118936363&loc=d3e5212-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=118936363&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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-Publisher FASB
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