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Change in Accumulated Other Comprehensive Income (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassifications from other comprehensive (loss) income | $ (7) | $ 17 | $ (3)
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-sale, Parent [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassifications from other comprehensive (loss) income | (7) | 17 | (10)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax | (1) | 4 | (4)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Reclassifications from other comprehensive (loss) income | $ 0 | $ 0 | 7
Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss), Reclassification Adjustment from AOCI, Tax |  |  | $ 2

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