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Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Statement of Comprehensive Income [Abstract] |  |  |
Net Income | $ 46,529 | $ 40,676 | $ 35,184
Unrealized Gains (Losses) on Securities: |  |  |
Unrealized Holding Gain (Loss) Arising During the Period | (4,936) | 7,364 | (13,830)
Reclassification Adjustment for Gains Included in Net Income | (706) | (596) | (1,979)
Tax Effect | 1,218 | (2,377) | 5,607
Net of Tax | (4,424) | 4,391 | (10,202)
Postretirement Benefit Obligation: |  |  |
Net (Loss) Arising During the Period | (73) | (226) | (24)
Reclassification Adjustment for Amortization of Prior Service Cost and Net Loss Included in Net Periodic Pension Cost | 32 | 8 | 6
Tax Effect | (13) | 80 | 4
Net of Tax | (54) | (138) | (14)
Total Other Comprehensive Income (Loss) | (4,478) | 4,253 | (10,216)
COMPREHENSIVE INCOME | $ 42,051 | $ 44,929 | $ 24,968

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