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Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Pre-Tax Amount |  |  |
Other comprehensive income (loss), before tax |  | $ (8,853) | $ 1,831
Tax (Expense) Benefit |  |  |
Other comprehensive income (loss), tax |  | 1,880 | (643)
Net of Tax Amount |  |  |
Other Comprehensive Income/(Loss) |  | (6,973) | 1,188
Accumulated Net Investment Gain (Loss) Attributable to Parent |  |  |
Pre-Tax Amount |  |  |
Change in net unrealized gains/(losses) on debt securities available-for-sale |  | (9,474) | 1,662
Reclassification adjustment for net (gains)/losses on securities available-for-sale included in net income | [1] | 0 | (370)
Tax (Expense) Benefit |  |  |
Change in net unrealized gains/(losses) on debt securities available-for-sale |  | 2,012 | (584)
Reclassification adjustment for net (gains)/losses on securities available-for-sale included in net income | [1] | 0 | 130
Net of Tax Amount |  |  |
Change in net unrealized gains/(losses) on debt securities available-for-sale |  | (7,462) | 1,078
Reclassification adjustment for net (gains)/losses on securities available-for-sale included in net income | [1] | 0 | (240)
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent |  |  |
Pre-Tax Amount |  |  |
Other comprehensive income (loss), before tax |  | 621 | 539
Tax (Expense) Benefit |  |  |
Other comprehensive income (loss), tax |  | (132) | (189)
Net of Tax Amount |  |  |
Other Comprehensive Income/(Loss) |  | $ 489 | $ 350
[1] | Reclassification adjustments are comprised of realized security gains or losses. The realized gains or losses have been reclassified out of accumulated other comprehensive income/(loss) and have affected certain lines in the Consolidated Statements of Comprehensive Income as follows; the pre-tax amount is included in securities gains/losses-net, the tax expense amount is included in the provision for income taxes and the net of tax amount is included in net income.

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