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Acquisitions Pro Forma Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Business Combinations [Abstract]    
Net interest and other income $ 84,339 $ 75,289
Net income $ 16,463 $ 14,911
Basic earnings per share (in dollars per share) $ 0.74 $ 0.69
Diluted earnings per share (in dollars per share) $ 0.71 $ 0.68