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Change in Accumulated Other Comprehensive Income (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Debt and Equity Securities, Gain (Loss) | $ 0 | $ 0 | $ (3) | $ 11
Reclassification adjustments | 0 | 0 | 3 | (11)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Tax |  |  | 1 | 2
Unrealized Gains And Losses On Available For Sale Securities [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |
Debt and Equity Securities, Gain (Loss) |  |  | (3) | 11
Reclassification adjustments | $ 0 | $ 0 | $ 3 | $ (11)

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