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Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Comprehensive Income Net Of Tax [Abstract] |  |  |  |
Unrealized holding (losses) gains on available-for-sale securities during the year, pre-tax |  | $ (5,343) | $ 5,107 | $ (4,270)
Reclassification adjustment for gains included in net income | [1] | (283) | (4) | (73)
Net unrealized holding gains (losses) |  | (5,626) | 5,103 | (4,343)
Change in funded status of post-retirement health plan, pre-tax |  | 0 | (55) | (156)
Net other comprehensive income (loss), pre-tax |  | (5,626) | 5,048 | (4,499)
Unrealized holding (losses) gains on available-for-sale securities during the year, tax |  | 1,110 | (1,788) | 1,494
Reclassification adjustment for gains included in net income | [1] | 59 | 2 | 26
Net unrealized (losses) gains on available-for-sale securities, tax |  | 1,169 | (1,786) | 1,520
Change in funded status of post-retirement health plan, tax |  | 0 | 19 | 55
Net other comprehensive income (loss), tax |  | 1,169 | (1,767) | 1,575
Unrealized holding gains (losses) on available-for-sale securities during the period, after tax |  | (4,233) | 3,319 | (2,776)
Reclassification adjustment for gains included in net income | [1] | (224) | (2) | (47)
Unrealized holding gains (losses), net of reclassification and tax |  | (4,457) | 3,317 | (2,823)
Change in funded status of post-retirement health plan, net of tax |  | 0 | (36) | (101)
Other comprehensive income (loss), net of tax |  | $ (4,457) | $ 3,281 | $ (2,924)
[1] | Pre-tax reclassification adjustments relating to available-for-sale securities are reported in security gains and the tax impact is included in income tax expense on the consolidated statements of income.

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