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Quarterly Financial Results (unaudited)
12 Months Ended
Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Financial Results (unaudited)
Note 21.  Quarterly Financial Results (unaudited)

A summary of selected consolidated quarterly financial data for each of the years in the three-year period ended December 31, 2019 follows:
(in thousands, except per share data)First
Quarter
Second
Quarter
Third
Quarter
Fourth
Quarter
2019    
Interest income$257,883  $265,851  $275,749  $268,453  
Net interest income187,246  188,918  195,806  194,172  
Provision for loan losses7,184  7,195  8,260  4,644  
Net income before taxes117,074  124,719  137,224  118,520  
Net income93,960  100,321  110,521  96,079  
Basic net income per share$1.22  $1.31  $1.45  $1.26  
Diluted net income per share$1.22  $1.31  $1.44  $1.26  
2018    
Interest income$211,528  $230,984  $248,110  $256,095  
Net interest income174,471  182,236  189,420  190,215  
Provision for loan losses6,931  9,402  8,725  9,319  
Net income before taxes103,143  109,865  118,183  118,757  
Net income83,510  86,865  93,747  95,318  
Basic net income per share$1.08  $1.13  $1.22  $1.24  
Diluted net income per share$1.08  $1.12  $1.21  $1.23  
2017    
Interest income$102,143  $123,743  $202,167  $208,085  
Net interest income88,767  106,627  173,182  174,731  
Provision for loan losses3,651  6,812  6,920  6,281  
Net income before taxes53,444  63,074  99,503  81,965  
Net income39,653  43,086  64,442  26,798  
Basic net income per share$0.83  $0.81  $0.84  $0.35  
Diluted net income per share$0.82  $0.80  $0.83  $0.35