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Consolidated Statement of Changes in Stockholders Equity (Unaudited) (Parentheticals)
9 Months Ended
Sep. 30, 2017
$ / shares
shares
Common Stock [Member]  
Common stock issued in business combination (in shares) 554,610
Other common stock issued (in shares) 399,008
Dividend reinvestment and purchase plan (in shares) 8,917
Stock options exercised (in shares) 7,126
Stock issued in connection with equity awards (in shares) 823
Retained Earnings [Member]  
Cash dividend per share (in dollars per share) | $ / shares $ 0.81
Stock options exercised (in shares) 7,949
Cash dividend per share (in dollars per share) | $ / shares $ 0.81