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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017
--- | --- | --- | ---
Assets |  |  |
Securities to be held to maturity, fair value | $ 256,316 | $ 259,655 | $ 246,238
Common stock, par value per share | $ 0.01 | $ 0.01 | $ 0.01

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