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Mergers and Acquisitions - Pro Forma (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Proforma amounts    
Total revenues (net interest income plus noninterest income)   $ 371,196
Net interest income   281,577
Net adjusted income available to the common shareholder   $ 113,903
EPS - basic   $ 1.49
EPS - diluted   $ 1.48
Atlantic Capital    
Mergers and Acquisitions    
Acquisition costs $ 1,400 $ 5,600