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Other Comprehensive Income (Loss) (Tables) | 12 Months Ended
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Dec. 31, 2017
Comprehensive Income Net Of Tax [Abstract] |
Schedule of Other Comprehensive Income (Loss) | The following table represents the detail of other comprehensive income (loss) for the years ended December 31, 2017, 2016 and 2015.
|  | 2017 |
|  | Pre-tax |  |  | Tax |  |  | After-Tax |
Unrealized holding losses on available-for-sale securities during the year |  | $ | 5,107 |  |  | $ | (1,788 | ) |  | $ | 3,319 |
Reclassification adjustment for (gains) losses included in net income (1) |  |  | (4 | ) |  |  | 2 |  |  |  | (2 | )
Net unrealized losses on available-for-sale securities |  |  | 5,103 |  |  |  | (1,786 | ) |  |  | 3,317 |
Change in funded status of post-retirement health plan |  |  | (55 | ) |  |  | 19 |  |  |  | (36 | )
Net other comprehensive income (loss) |  | $ | 5,048 |  |  | $ | (1,767 | ) |  | $ | 3,281 |
|  | 2016 |
|  | Pre-tax |  |  | Tax |  |  | After-Tax |
Unrealized holding losses on available-for-sale securities during the year |  | $ | (4,270 | ) |  | $ | 1,494 |  |  | $ | (2,776 | )
Reclassification adjustment for (gains) losses included in net income (1) |  |  | (73 | ) |  |  | 26 |  |  |  | (47 | )
Net unrealized gains on available-for-sale securities |  |  | (4,343 | ) |  |  | 1,520 |  |  |  | (2,823 | )
Change in funded status of post-retirement health plan |  |  | (156 | ) |  |  | 55 |  |  |  | (101 | )
Net other comprehensive income (loss) |  | $ | (4,499 | ) |  | $ | 1,575 |  |  | $ | (2,924 | )
|  | 2015 |
|  | Pre-tax |  |  | Tax |  |  | After-Tax |
Unrealized holding gains on available-for-sale securities during the year |  | $ | (1,403 | ) |  | $ | 491 |  |  | $ | (912 | )
Reclassification adjustment for (gains) losses included in net income (1) |  |  | (94 | ) |  |  | 33 |  |  |  | (61 | )
Net unrealized losses on available-for-sale securities |  |  | (1,497 | ) |  |  | 524 |  |  |  | (973 | )
Change in funded status of post-retirement health plan |  |  | 20 |  |  |  | (7 | ) |  |  | 13 |
Net other comprehensive income (loss) |  | $ | (1,477 | ) |  | $ | 517 |  |  | $ | (960 | )
(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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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580 + Details
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