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Acquisitions - Pro Forma Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Business Combinations [Abstract]    
Net interest and other income $ 43,884 $ 40,090
Net income $ 9,521 $ 6,583
Basic earnings per share (in dollars per share) $ 0.35 $ 0.26
Diluted earnings per share (in dollars per share) $ 0.34 $ 0.25