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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Investment securities:    
Held-to-maturity, at fair value $ 74,224 $ 73,096
Stockholders Equity    
Common stock, par value (in dollars per share) $ 4 $ 4
Common stock, authorized (in shares) 18,000,000 18,000,000
Common stock, issued (in shares) 13,055,615 13,020,742
Treasury stock (in shares) 549,743 549,743