v3.26.3
Consolidated Statements of Shareholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Surplus
Retained Earnings
Other Comprehensive Income (Loss)
Treasury Stock
Total
Balance at Dec. 31, 2024 $ 96,617 $ 159,333 $ 3,356,177 $ (379,054) $ (436,366) $ 2,796,707
Balance (in shares) at Dec. 31, 2024 96,617          
Increase (decrease) in shareholders' equity            
Net income     305,409     305,409
Dividends:            
Dividends cash     (87,061)     (87,061)
Purchase of treasury stock         (4,546) (4,546)
Exercise of stock options $ 36 1,212       1,248
Exercise of stock options (in shares) 36          
Stock compensation expense recognized in earnings   86       86
Other comprehensive (loss) income, net of tax:            
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments       115,965   115,965
Balance at Sep. 30, 2025 $ 96,653 160,631 3,574,525 (263,089) (440,912) 3,127,808
Balance (in shares) at Sep. 30, 2025 96,653          
Balance at Jun. 30, 2025 $ 96,640 160,169 3,509,661 (303,489) (440,912) 3,022,069
Balance (in shares) at Jun. 30, 2025 96,640          
Increase (decrease) in shareholders' equity            
Net income     108,375     108,375
Dividends:            
Dividends cash     (43,511)     (43,511)
Exercise of stock options $ 13 442       455
Exercise of stock options (in shares) 13          
Stock compensation expense recognized in earnings   20       20
Other comprehensive (loss) income, net of tax:            
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments       40,400   40,400
Balance at Sep. 30, 2025 $ 96,653 160,631 3,574,525 (263,089) (440,912) 3,127,808
Balance (in shares) at Sep. 30, 2025 96,653          
Balance at Dec. 31, 2025 $ 96,659 160,861 3,681,408 (246,316) (440,974) 3,251,638
Balance (in shares) at Dec. 31, 2025 96,659          
Increase (decrease) in shareholders' equity            
Net income     312,471     312,471
Dividends:            
Dividends cash     (90,792)     (90,792)
Purchase of treasury stock         (673) (673)
Exercise of stock options $ 32 1,074       1,106
Exercise of stock options (in shares) 32          
Stock compensation expense recognized in earnings   47       47
Other comprehensive (loss) income, net of tax:            
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments       (134,316)   (134,316)
Balance at Sep. 30, 2026 $ 96,691 161,982 3,903,087 (380,632) (441,647) 3,339,481
Balance (in shares) at Sep. 30, 2026 96,691          
Balance at Jun. 30, 2026 $ 96,680 161,619 3,834,016 (275,880) (441,131) 3,375,304
Balance (in shares) at Jun. 30, 2026 96,680          
Increase (decrease) in shareholders' equity            
Net income     114,473     114,473
Dividends:            
Dividends cash     (45,402)     (45,402)
Purchase of treasury stock         (516) (516)
Exercise of stock options $ 11 350       361
Exercise of stock options (in shares) 11          
Stock compensation expense recognized in earnings   13       13
Other comprehensive (loss) income, net of tax:            
Net change in unrealized gains and losses on available for sale securities, net of reclassification adjustments       (104,752)   (104,752)
Balance at Sep. 30, 2026 $ 96,691 $ 161,982 $ 3,903,087 $ (380,632) $ (441,647) $ 3,339,481
Balance (in shares) at Sep. 30, 2026 96,691