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Loans And Related Allowances For Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | $ 9,139 | $ 9,200
Impaired Loans with Specific Allowance: Related Allowance | 2,233 | 2,173
Impaired Loans with No Specific Allowance: Recorded Investment | 6,135 | 5,974
Total Impaired Loans: Recorded Investment | 15,274 | 15,174
Unpaid Principal Balance | 25,778 | 25,865
Commercial real estate- non owner-occupied [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 115 | 116
Impaired Loans with Specific Allowance: Related Allowance | 7 | 9
Impaired Loans with No Specific Allowance: Recorded Investment | 18 | 33
Total Impaired Loans: Recorded Investment | 133 | 149
Unpaid Principal Balance | 8,142 | 8,224
Commercial real estate- all other CRE [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment | 3,218 | 3,030
Total Impaired Loans: Recorded Investment | 3,218 | 3,030
Unpaid Principal Balance | 3,218 | 3,030
Acquisition and development- 1-4 family residential construction [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment | 285 | 291
Total Impaired Loans: Recorded Investment | 285 | 291
Unpaid Principal Balance | 285 | 291
All Other Acquisition And Development [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 8,287 | 8,219
Impaired Loans with Specific Allowance: Related Allowance | 2,211 | 2,142
Impaired Loans with No Specific Allowance: Recorded Investment | 89 | 60
Total Impaired Loans: Recorded Investment | 8,376 | 8,279
Unpaid Principal Balance | 8,449 | 8,340
Commercial and industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment |  | 30
Total Impaired Loans: Recorded Investment |  | 30
Unpaid Principal Balance | 2,213 | 2,266
Residential mortgage- term [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 737 | 865
Impaired Loans with Specific Allowance: Related Allowance | 15 | 22
Impaired Loans with No Specific Allowance: Recorded Investment | 1,724 | 1,668
Total Impaired Loans: Recorded Investment | 2,461 | 2,533
Unpaid Principal Balance | 2,644 | 2,724
Residential mortgage- home equity [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment | 798 | 858
Total Impaired Loans: Recorded Investment | 798 | 858
Unpaid Principal Balance | 811 | 986
Consumer [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment | 3 | 4
Total Impaired Loans: Recorded Investment | 3 | 4
Unpaid Principal Balance | $ 16 | $ 4

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