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Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) | 3 Months Ended
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Mar. 31, 2019 | Mar. 31, 2018
Income Statement [Abstract] |  |
Securities transactions accumulated other comprehensive income reclassifications | $ 0 | $ 0
Unrealized gains (losses) on securities, tax | (868,000) | 474,000
Other comprehensive gains (losses), tax | $ (868,000) | $ 474,000

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