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Consolidated Statements of Changes in Shareholders' Equity - USD ($)
$ in Thousands
Total
Cumulative Effect, Period of Adoption, Adjustment [Member]
Preferred Stock [Member]
Common Stock
Capital Surplus [Member]
Retained Earnings [Member]
Retained Earnings [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Treasury Stock [Member]
Accumulated Other Comprehensive Gain (Loss) [Member]
Deferred Benefits for Directors [Member]
Beginning Balance at Dec. 31, 2019 $ 2,593,921 $ (26,591)   $ 141,827 $ 1,636,966 $ 824,694 $ (26,591) $ (9,463) $ 1,201 $ (1,304)
Beginning Balance, shares at Dec. 31, 2019       67,824,428            
Net income 122,044         122,044        
Other comprehensive income (loss) 30,158               30,158  
Comprehensive (loss) income 152,202                  
Common dividends declared (85,815)         (85,815)        
Preferred dividends declared $ (2,644)         (2,644)        
Accounting Standards Update [Extensible List] ASU 2016-13 [Member]                  
Issuance of preferred stock, net of issuance costs $ 144,484   $ 144,484              
Treasury shares acquired (25,296)       118     (25,414)    
Treasury shares acquired, shares       (813,108)            
Stock options exercised 976     $ 7 (1,206)     2,175    
Stock options exercised, shares       61,623            
Restricted stock granted         (6,753)     6,753    
Restricted stock granted, shares       181,763            
Stock compensation expense 5,653       5,653          
Deferred benefits for directors-net (153)       37         (190)
Ending Balance at Dec. 31, 2020 2,756,737   144,484 $ 141,834 1,634,815 831,688   (25,949) 31,359 (1,494)
Ending Balance, shares at Dec. 31, 2020       67,254,706            
Net income 242,260         242,260        
Other comprehensive income (loss) (36,479)               (36,479)  
Comprehensive (loss) income 205,781                  
Common dividends declared (85,667)         (85,667)        
Preferred dividends declared (10,125)         (10,125)        
Issuance of preferred stock, net of issuance costs           (391)   391    
Issuance of preferred stock, net of issuance costs, shares       11,720            
Treasury shares acquired (182,977)       194     (183,171)    
Treasury shares acquired, shares       (5,218,275)            
Stock options exercised 3,096       (1,388)     4,484    
Stock options exercised, shares       130,273            
Restricted stock granted         (4,486)     4,486    
Restricted stock granted, shares       128,821            
Stock compensation expense 6,475       6,475          
Deferred benefits for directors-net (154)       32         (186)
Ending Balance at Dec. 31, 2021 2,693,166   144,484 $ 141,834 1,635,642 977,765   (199,759) (5,120) (1,680)
Ending Balance, shares at Dec. 31, 2021       62,307,245            
Net income 192,113         192,113        
Other comprehensive income (loss) (257,296)               (257,296)  
Comprehensive (loss) income (65,183)                  
Common dividends declared (81,286)         (81,286)        
Preferred dividends declared (10,125)         (10,125)        
Stock issued for dividend reinvestment           (792)   792    
Stock issued for dividend reinvestment, shares       23,478            
Treasury shares acquired (119,097)             (119,097)    
Treasury shares acquired, shares       (3,407,016)            
Stock options exercised $ 3,050       (529)     3,579    
Stock options exercised, shares 111,050     111,050            
Restricted stock granted         (5,521)     5,521    
Restricted stock granted, shares       164,206            
Stock compensation expense $ 6,246       6,246          
Deferred benefits for directors-net (109)       39         (148)
Ending Balance at Dec. 31, 2022 $ 2,426,662   $ 144,484 $ 141,834 $ 1,635,877 $ 1,077,675   $ (308,964) $ (262,416) $ (1,828)
Ending Balance, shares at Dec. 31, 2022       59,198,963