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Change in Accumulated Other Comprehensive Income (Loss) (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Accumulated Other Comprehensive Income Loss [Line Items] |  |
Reclassification adjustments | $ 684 | $ (7)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | 144 | (1)
Unrealized Gains And Losses On Available For Sale Securities [Member] |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |
Reclassification adjustments | 687 | $ (7)
Change In Benefit Obligations And Plan Assets For The Post Retirement Benefit Plan [Member] |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |
Reclassification adjustments | (3) |
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax | $ 1 |

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