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CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Unaudited) - USD ($)
$ in Thousands
Common Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Loss
Treasury Stock
Deferred Compensation Arrangements
Total
Balance at Dec. 31, 2023 $ 54,372 $ 1,060,289 $ 1,188,869 $ (556,892) $ (55,592) $ 6,891 $ 1,697,937
Balance (in shares) at Dec. 31, 2023 53,327,060            
Increase (Decrease) in Stockholders' Equity              
Net income     132,688       132,688
Other comprehensive income, net of tax       62,860     62,860
Dividends declared:              
Common     (71,764)       (71,764)
Common stock activity under employee stock plans $ 201 2,501         2,702
Common stock activity under employee stock plans (in shares) 201,146            
Stock-based compensation   6,506         6,506
Distribution of stock under deferred compensation arrangements   (38)     1,082 (1,044) 0
Distribution of stock under deferred compensation arrangements (in shares) 20,769            
Treasury stock purchased         (45,982)   (45,982)
Treasury stock purchased (in shares) (1,003,084)            
Balance at Sep. 30, 2024 $ 54,573 1,069,258 1,249,793 (494,032) (100,492) 5,847 1,784,947
Balance (in shares) at Sep. 30, 2024 52,545,891            
Balance at Jun. 30, 2024 $ 54,549 1,065,937 1,230,133 (585,794) (100,446) 5,801 1,670,180
Balance (in shares) at Jun. 30, 2024 52,522,803            
Increase (Decrease) in Stockholders' Equity              
Net income     43,901       43,901
Other comprehensive income, net of tax       91,762     91,762
Dividends declared:              
Common     (24,241)       (24,241)
Common stock activity under employee stock plans $ 24 1,284         1,308
Common stock activity under employee stock plans (in shares) 24,048            
Stock-based compensation   2,083         2,083
Distribution of stock under deferred compensation arrangements   (46)       46 0
Treasury stock purchased         (46)   (46)
Treasury stock purchased (in shares) (960)            
Balance at Sep. 30, 2024 $ 54,573 1,069,258 1,249,793 (494,032) (100,492) 5,847 1,784,947
Balance (in shares) at Sep. 30, 2024 52,545,891            
Balance at Dec. 31, 2024 $ 54,696 1,075,537 1,275,331 (548,085) (100,539) 5,895 1,762,835
Balance (in shares) at Dec. 31, 2024 52,667,836            
Increase (Decrease) in Stockholders' Equity              
Net income     156,033       156,033
Other comprehensive income, net of tax       94,921     94,921
Dividends declared:              
Common     (73,391)       (73,391)
Common stock activity under employee stock plans $ 190 1,598         1,788
Common stock activity under employee stock plans (in shares) 189,799            
Stock-based compensation   7,888         7,888
Distribution of stock under deferred compensation arrangements   (202)     762 (560) 0
Distribution of stock under deferred compensation arrangements (in shares) 12,361            
Treasury stock purchased         (11,124)   (11,124)
Treasury stock purchased (in shares) (208,416)            
Balance at Sep. 30, 2025 $ 54,886 1,084,821 1,357,973 (453,164) (110,901) 5,335 1,938,950
Balance (in shares) at Sep. 30, 2025 52,661,580            
Balance at Jun. 30, 2025 $ 54,887 1,081,954 1,327,660 (486,835) (99,867) 5,292 1,883,091
Balance (in shares) at Jun. 30, 2025 52,869,425            
Increase (Decrease) in Stockholders' Equity              
Net income     55,088       55,088
Other comprehensive income, net of tax       33,671     33,671
Dividends declared:              
Common     (24,775)       (24,775)
Common stock activity under employee stock plans $ (1) 585         584
Common stock activity under employee stock plans (in shares) (1,078)            
Stock-based compensation   2,325         2,325
Distribution of stock under deferred compensation arrangements   (43)       43 0
Treasury stock purchased         (11,034)   (11,034)
Treasury stock purchased (in shares) (206,767)            
Balance at Sep. 30, 2025 $ 54,886 $ 1,084,821 $ 1,357,973 $ (453,164) $ (110,901) $ 5,335 $ 1,938,950
Balance (in shares) at Sep. 30, 2025 52,661,580