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Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Amounts Reclassified from AOCI [Abstract] |  |  |  |
Securities gains (losses) | $ 14 | $ (2) | $ 574 | $ (288)
Tax expense (benefit) | 2,504 | 3,044 | 4,807 | 8,425
Net income | 15,269 | 16,106 | 48,532 | 43,519
Unrealized Gains on AFS Securities [Member] | Reclassification Out of Accumulated Other Comprehensive Income [Member] |  |  |  |
Amounts Reclassified from AOCI [Abstract] |  |  |  |
Securities gains (losses) | (2) | (2) | 4 | 149
Tax expense (benefit) | (1) | 0 | 1 | 32
Net income | $ (1) | $ (2) | $ 3 | $ 117

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