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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	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Impaired [Line Items]
Average Investment	$ 9,702	$ 15,225
Interest income recognized on an accrual basis	64	67
Interest income recognized on a cash basis	5	1
Commercial real estate- non owner-occupied [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	2,406	141
Interest income recognized on an accrual basis	3	2
Commercial real estate- all other CRE [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	3,182	3,124
Interest income recognized on an accrual basis	35	37
Acquisition and development- 1-4 family residential construction [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	263	288
Interest income recognized on an accrual basis	3	3
Acquisition and development- All other A&D [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	596	8,328
Interest income recognized on an accrual basis	3	3
Interest income recognized on a cash basis		1
Commercial and industrial [Member]
Financing Receivable, Impaired [Line Items]
Average Investment		15
Residential mortgage- term [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	2,784	2,497
Interest income recognized on an accrual basis	20	22
Interest income recognized on a cash basis	5
Residential mortgage- home equity [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	446	828
Consumer [Member]
Financing Receivable, Impaired [Line Items]
Average Investment	$ 25	$ 4

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
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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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