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Allowance For Loan Losses (Impaired Loans By Class) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2017 | Dec. 31, 2016
Unpaid Principal Balance [Abstract] |  |  |
Total: | $ 11,529 | $ 11,529 | $ 14,341
Recorded Investment [Abstract] |  |  |
Total: | 10,615 | 10,615 | 13,400
Related Allowance | 268 | 268 | 385
Average Recorded Investment [Abstract] |  |  |
Total: | 10,700 | 10,770 | 13,719
Interest Income Recognized [Abstract] |  |  |
Total: | 67 | 216 | 415
Consumer Installment |  |  |
Unpaid Principal Balance [Abstract] |  |  |
Total: | 3 | 3 | 8
Recorded Investment [Abstract] |  |  |
Total: | 3 | 3 | 8
Related Allowance | 0 | 0 | 0
Average Recorded Investment [Abstract] |  |  |
Total: |  | 4 | 9
Interest Income Recognized [Abstract] |  |  |
Total: |  | 0 | 0
Commercial |  |  |
Unpaid Principal Balance [Abstract] |  |  |
Total: | 714 | 714 | 594
Recorded Investment [Abstract] |  |  |
Total: | 477 | 477 | 582
Related Allowance | 9 | 9 | 15
Average Recorded Investment [Abstract] |  |  |
Total: |  | 531 | 654
Interest Income Recognized [Abstract] |  |  |
Total: |  | 18 | 35
Commercial Real Estate |  |  |
Unpaid Principal Balance [Abstract] |  |  |
Total: | 1,586 | 1,586 | 3,194
Recorded Investment [Abstract] |  |  |
Total: | 1,554 | 1,554 | 2,867
Related Allowance | 58 | 58 | 102
Average Recorded Investment [Abstract] |  |  |
Total: |  | 1,571 | 2,954
Interest Income Recognized [Abstract] |  |  |
Total: |  | 46 | 75
Construction and Farmland |  |  |
Unpaid Principal Balance [Abstract] |  |  |
Total: | 369 | 369 | 1,320
Recorded Investment [Abstract] |  |  |
Total: | 324 | 324 | 1,324
Related Allowance | 0 | 0 | 0
Average Recorded Investment [Abstract] |  |  |
Total: |  | 334 | 1,358
Interest Income Recognized [Abstract] |  |  |
Total: |  | 21 | 75
Residential Real Estate |  |  |
Unpaid Principal Balance [Abstract] |  |  |
Total: | 8,857 | 8,857 | 9,225
Recorded Investment [Abstract] |  |  |
Total: | 8,257 | 8,257 | 8,619
Related Allowance | 201 | 201 | 268
Average Recorded Investment [Abstract] |  |  |
Total: |  | 8,330 | 8,744
Interest Income Recognized [Abstract] |  |  |
Total: |  | 131 | 230
All Other Loans |  |  |
Unpaid Principal Balance [Abstract] |  |  |
Total: | 0 | 0 | 0
Recorded Investment [Abstract] |  |  |
Total: | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Average Recorded Investment [Abstract] |  |  |
Total: |  | 0 | 0
Interest Income Recognized [Abstract] |  |  |
Total: |  | 0 | 0
With No Related Allowance [Member] |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 8,543 | 8,543 | 10,895
Recorded Investment [Abstract] |  |  |
With no related allowance: | 7,896 | 7,896 | 10,335
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 7,992 | 10,586
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 137 | 294
With No Related Allowance [Member] | Commercial - Non Real Estate Commercial And Industrial |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 204 | 204 | 311
Recorded Investment [Abstract] |  |  |
With no related allowance: | 1 | 1 | 299
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 16 | 356
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 9 | 21
With No Related Allowance [Member] | Commercial Real Estate Owner Occupied |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 333 | 333 | 869
Recorded Investment [Abstract] |  |  |
With no related allowance: | 333 | 333 | 772
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 337 | 778
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 11 | 15
With No Related Allowance [Member] | Commercial Real Estate Non-Owner Occupied |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 442 | 442 | 1,298
Recorded Investment [Abstract] |  |  |
With no related allowance: | 408 | 408 | 1,066
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 415 | 1,137
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 7 | 13
With No Related Allowance [Member] | Construction And Farmland Commercial |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 369 | 369 | 1,320
Recorded Investment [Abstract] |  |  |
With no related allowance: | 324 | 324 | 1,324
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 334 | 1,358
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 21 | 75
With No Related Allowance [Member] | Consumer Installment |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 3 | 3 | 8
Recorded Investment [Abstract] |  |  |
With no related allowance: | 3 | 3 | 8
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 4 | 9
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 0 | 0
With No Related Allowance [Member] | Residential Equity Lines |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 234 | 234 | 17
Recorded Investment [Abstract] |  |  |
With no related allowance: | 57 | 57 | 17
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 61 | 18
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 0 | 0
With No Related Allowance [Member] | Residential Single Family |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 6,958 | 6,958 | 7,072
Recorded Investment [Abstract] |  |  |
With no related allowance: | 6,770 | 6,770 | 6,849
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 6,825 | 6,930
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 89 | 170
With No Related Allowance [Member] | All Other Loans |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With no related allowance: | 0 | 0 | 0
Recorded Investment [Abstract] |  |  |
With no related allowance: | 0 | 0 | 0
Average Recorded Investment [Abstract] |  |  |
With no related allowance: |  | 0 | 0
Interest Income Recognized [Abstract] |  |  |
With no related allowance: |  | 0 | 0
With An Allowance Recorded [Member] |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 2,986 | 2,986 | 3,446
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 2,719 | 2,719 | 3,065
Related Allowance | 268 | 268 | 385
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 2,778 | 3,133
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | 79 | 121
With An Allowance Recorded [Member] | Commercial - Non Real Estate Commercial And Industrial |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 510 | 510 | 283
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 476 | 476 | 283
Related Allowance | 9 | 9 | 15
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 515 | 298
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | 9 | 14
With An Allowance Recorded [Member] | Commercial Real Estate Owner Occupied |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: |  |  | 203
Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  |  | 203
Related Allowance |  |  | 37
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  |  | 205
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  |  | 10
With An Allowance Recorded [Member] | Commercial Real Estate Non-Owner Occupied |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 811 | 811 | 824
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 813 | 813 | 826
Related Allowance | 58 | 58 | 65
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 819 | 834
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | 28 | 37
With An Allowance Recorded [Member] | Construction And Farmland Commercial |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 0 | 0 | 0
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 0 | 0 | 0
Related Allowance | 0 | 0 | 0
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 0 | 0
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | 0 | 0
With An Allowance Recorded [Member] | Residential Equity Lines |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 217 | 217 | 458
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 46 | 46 | 115
Related Allowance | 46 | 46 | 56
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 46 | 120
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | 0 | 0
With An Allowance Recorded [Member] | Residential Single Family |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 1,448 | 1,448 | 1,678
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 1,384 | 1,384 | 1,638
Related Allowance | 155 | 155 | 212
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 1,398 | 1,676
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | 42 | 60
With An Allowance Recorded [Member] | All Other Loans |  |  |
Unpaid Principal Balance [Abstract] |  |  |
With an allowance recorded: | 0 | 0 | 0
Recorded Investment [Abstract] |  |  |
With an allowance recorded: | 0 | 0 | 0
Related Allowance | $ 0 | 0 | 0
Average Recorded Investment [Abstract] |  |  |
With an allowance recorded: |  | 0 | 0
Interest Income Recognized [Abstract] |  |  |
With an allowance recorded: |  | $ 0 | $ 0

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