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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Investment securities:    
Held-to-maturity, at fair value $ 68,743 $ 67,909
Stockholders Equity    
Common stock, par value (in dollars per share) $ 4 $ 4
Common stock, authorized (in shares) 30,000,000 30,000,000
Common stock, issued (in shares) 17,251,505 17,219,012
Treasury stock (in shares) 574,377 574,377