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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Statement of Comprehensive Income [Abstract] |  |  |  |
SECURITIES: Unrealized gains (losses) arising during the period, income taxes | $ 93 | $ (139) | $ 850 | $ (742)
SECURITIES: Reclassification adjustment for net gains included in net income, income taxes | 0 | 7 | 0 | 10
PENSION: Amortization of pension net loss, transition liability, and prior service cost, income taxes | $ 48 | $ 29 | $ 144 | $ 87

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