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Supplemental Comprehensive Income Disclosures (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Supplemental Comprehensive Income Disclosures [Abstract] |  |
Unrealized holding gains on securities arising during the period | $ (3,982) | $ 2,543
Reclassification adjustment for gains on securities included in net income | (2,840) | (652)
Total unrealized gains on securities | (6,822) | 1,891
Unrealized holding losses on derivatives arising during the period | (130) | (516)
Unrealized holding gains on securities arising during the period | 837 | (890)
Reclassification adjustment for gains on derivatives included in net income, before Tax | 0 | 78
Total unrealized gain on derivatives | (130) | (438)
Reclassification adjustment for gains on securities included in net income | 596 | 228
Total other comprehensive (loss) income | (6,952) | 1,453
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax | 1,433 | (662)
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax | 27 | 181
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax | 0 | (28)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Total | 27 | 153
Other Comprehensive Income (Loss), Tax | 1,460 | (509)
Other comprehensive income (loss) before reclassification adjustment | (3,145) | 1,653
Total unrealized (losses) gains on securities | (5,389) | 1,229
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax | (103) | (335)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax | 0 | (50)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax, Total | (103) | (285)
Total other comprehensive (loss) income | (5,492) | 944
Reclassification adjustment for gains on securities included in net income | $ 2,244 | $ 424

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