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Allowance for Loan Losses (Impaired Loans By Class) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | $ 8,381 | $ 9,453 |
Recorded Investment | 7,420 | 8,590 |
Related Allowance | 300 | 962 |
Average Recorded Investment | 7,685 | 8,898 | $ 11,600
Interest Income Recognized | 301 | 383 | $ 322
Consumer Installment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 9 | 0 |
Recorded Investment | 8 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 9 | 0 |
Interest Income Recognized | 0 | 0 |
Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 364 | 1,535 |
Recorded Investment | 228 | 1,316 |
Related Allowance | 0 | 650 |
Average Recorded Investment | 269 | 1,485 |
Interest Income Recognized | 21 | 85 |
Commercial Real Estate [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 3,145 | 2,976 |
Recorded Investment | 3,062 | 2,926 |
Related Allowance | 149 | 193 |
Average Recorded Investment | 3,098 | 2,965 |
Interest Income Recognized | 107 | 105 |
Construction And Farmland [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 488 | 332 |
Recorded Investment | 433 | 281 |
Related Allowance | 100 | 0 |
Average Recorded Investment | 450 | 297 |
Interest Income Recognized | 33 | 27 |
Residential [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 4,375 | 4,610 |
Recorded Investment | 3,689 | 4,067 |
Related Allowance | 51 | 119 |
Average Recorded Investment | 3,859 | 4,151 |
Interest Income Recognized | 140 | 166 |
All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized |  | 0 |
With No Related Allowance [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 4,946 | 4,822 |
Recorded Investment | 4,034 | 4,015 |
Average Recorded Investment | 4,260 | 4,177 |
Interest Income Recognized | 152 | 171 |
With No Related Allowance [Member] | Commercial - Non Real Estate Commercial And Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 364 | 564 |
Recorded Investment | 228 | 356 |
Average Recorded Investment | 269 | 422 |
Interest Income Recognized | 21 | 25 |
With No Related Allowance [Member] | Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 369 | 0 |
Recorded Investment | 356 | 0 |
Average Recorded Investment | 358 | 0 |
Interest Income Recognized | 4 | 0 |
With No Related Allowance [Member] | Commercial Real Estate Non-Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 407 | 558 |
Recorded Investment | 329 | 501 |
Average Recorded Investment | 335 | 511 |
Interest Income Recognized | 0 | 4 |
With No Related Allowance [Member] | Construction And Farmland Residential [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment |  | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
With No Related Allowance [Member] | Construction And Farmland Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 301 | 332 |
Recorded Investment | 246 | 281 |
Average Recorded Investment | 263 | 297 |
Interest Income Recognized | 25 | 27 |
With No Related Allowance [Member] | Consumer Installment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 9 | 0 |
Recorded Investment | 8 | 0 |
Average Recorded Investment | 9 | 0 |
Interest Income Recognized | 0 | 0 |
With No Related Allowance [Member] | Residential Equity Lines [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 276 | 468 |
Recorded Investment | 65 | 92 |
Average Recorded Investment | 68 | 93 |
Interest Income Recognized | 1 | 0 |
With No Related Allowance [Member] | Residential Single Family [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 2,854 | 2,616 |
Recorded Investment | 2,435 | 2,499 |
Average Recorded Investment | 2,583 | 2,565 |
Interest Income Recognized | 80 | 101 |
With No Related Allowance [Member] | Residential Multifamily [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 366 | 284 |
Recorded Investment | 367 | 286 |
Average Recorded Investment | 375 | 289 |
Interest Income Recognized | 21 | 14 |
With No Related Allowance [Member] | All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance |  | 0 |
Recorded Investment |  | 0 |
Average Recorded Investment |  | 0 |
Interest Income Recognized |  | 0 |
With An Allowance Recorded [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 3,435 | 4,631 |
Recorded Investment | 3,386 | 4,575 |
Related Allowance | 300 | 962 |
Average Recorded Investment | 3,425 | 4,721 |
Interest Income Recognized | 149 | 212 |
With An Allowance Recorded [Member] | Commercial - Non Real Estate Commercial And Industrial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 971 |
Recorded Investment | 0 | 960 |
Related Allowance | 0 | 650 |
Average Recorded Investment | 0 | 1,063 |
Interest Income Recognized | 0 | 60 |
With An Allowance Recorded [Member] | Commercial Real Estate Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
With An Allowance Recorded [Member] | Commercial Real Estate Non-Owner Occupied [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 2,369 | 2,418 |
Recorded Investment | 2,377 | 2,425 |
Related Allowance | 149 | 193 |
Average Recorded Investment | 2,405 | 2,454 |
Interest Income Recognized | 103 | 101 |
With An Allowance Recorded [Member] | Construction And Farmland Residential [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
With An Allowance Recorded [Member] | Construction And Farmland Commercial [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 187 | 0 |
Recorded Investment | 187 | 0 |
Related Allowance | 100 | 0 |
Average Recorded Investment | 187 | 0 |
Interest Income Recognized | 8 | 0 |
With An Allowance Recorded [Member] | Consumer Installment [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
With An Allowance Recorded [Member] | Residential Equity Lines [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
With An Allowance Recorded [Member] | Residential Single Family [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 879 | 1,242 |
Recorded Investment | 822 | 1,190 |
Related Allowance | 51 | 119 |
Average Recorded Investment | 833 | 1,204 |
Interest Income Recognized | 38 | 51 |
With An Allowance Recorded [Member] | Residential Multifamily [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | 0 | 0 |
With An Allowance Recorded [Member] | All Other Loans [Member] |  |  |
Financing Receivable, Impaired [Line Items] |  |  |
Unpaid Principal Balance | 0 | 0 |
Recorded Investment | 0 | 0 |
Related Allowance | 0 | 0 |
Average Recorded Investment | 0 | 0 |
Interest Income Recognized | $ 0 | $ 0 |

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