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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, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment | $ 23 | $ 26
Total Impaired Loans: Recorded Investment | 23 | 26
Unpaid Principal Balance | 48 | 51
Commercial real estate- all other CRE [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 1,867 | 111
Impaired Loans with Specific Allowance: Related Allowance | 33 | 4
Impaired Loans with No Specific Allowance: Recorded Investment | 2,826 | 8
Total Impaired Loans: Recorded Investment | 4,693 | 119
Unpaid Principal Balance | 4,693 | 119
Acquisition and development- All other A&D [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with No Specific Allowance: Recorded Investment | 259 | 266
Total Impaired Loans: Recorded Investment | 259 | 266
Unpaid Principal Balance | 259 | 266
Commercial and industrial [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 207 | 276
Impaired Loans with Specific Allowance: Related Allowance | 2 | 13
Impaired Loans with No Specific Allowance: Recorded Investment | 408 | 300
Total Impaired Loans: Recorded Investment | 615 | 576
Unpaid Principal Balance | 1,825 | 1,724
Residential mortgage- home equity [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment | 491 | 936
Impaired Loans with Specific Allowance: Related Allowance | 17 | 34
Impaired Loans with No Specific Allowance: Recorded Investment | 2,231 | 1,910
Total Impaired Loans: Recorded Investment | 2,722 | 2,846
Unpaid Principal Balance | 2,904 | 3,031
Consumer [Member] |  |
Financing Receivable, Impaired [Line Items] |  |
Impaired Loans with Specific Allowance: Recorded Investment |  | 76
Impaired Loans with Specific Allowance: Related Allowance |  | 6
Impaired Loans with No Specific Allowance: Recorded Investment | 478 | 339
Total Impaired Loans: Recorded Investment | 478 | 415
Unpaid Principal Balance | $ 510 | $ 447

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