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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands | Sep. 30, 2015 | Dec. 31, 2014 | Sep. 30, 2014
--- | --- | --- | ---
Assets |  |  |
Securities to be held to maturity | $ 248,344 | $ 279,704 | $ 280,779
Shareholders' equity |  |  |
Common stock, par value per share (usd per share) | $ 0.01 | $ 0.01 | $ 0.01

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