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Acquisitions - Pro Forma Information (Details)
$ / shares in Units, $ in Thousands
9 Months Ended
Sep. 30, 2018
USD ($)
$ / shares
Business Combinations [Abstract]  
Net interest and other income | $ $ 363,538
Net income | $ $ 120,400
Basic earnings per share (in dollars per share) | $ / shares $ 1.95
Diluted earnings per share (in dollars per share) | $ / shares $ 1.93