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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
COMMON STOCK [Member]
CAPITAL SURPLUS [Member]
RETAINED EARNINGS [Member]
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Balance at beginning of period, Shares at Dec. 31, 2021   32,603,118      
Balance at beginning of period at Dec. 31, 2021   $ 32,603 $ 159,914 $ 977,067 $ 2,150
Shares issued for stock options, Shares   272,442      
Shares issued for stock options, Value   $ 273 7,376    
Net income $ 193,100     193,100  
Net change         (73,713)
Dividends on common stock       (49,875)  
Stock-based compensation arrangements     1,941    
Balance at end of period, Shares at Dec. 31, 2022 32,875,560 32,875,560      
Balance at end of period at Dec. 31, 2022 $ 1,250,836 $ 32,876 169,231 1,120,292 (71,563)
Shares issued for stock options, Shares   78,160      
Shares issued for stock options, Value   $ 78 2,465    
Net income $ 212,465     212,465  
Net change         21,521
Dividends on common stock       (54,653)  
Stock-based compensation arrangements     2,999    
Shares acquired and canceled, Shares   (20,702)      
Shares acquired and canceled, Value   $ (21)   (1,799)  
Balance at end of period, Shares at Dec. 31, 2023 32,933,018 32,933,018      
Balance at end of period at Dec. 31, 2023 $ 1,433,891 $ 32,933 174,695 1,276,305 (50,042)
Shares issued for stock options, Shares   283,501      
Shares issued for stock options, Value   $ 284 8,915    
Net income $ 216,354     216,354  
Net change         17,182
Dividends on common stock       (58,891)  
Stock-based compensation arrangements     3,452    
Balance at end of period, Shares at Dec. 31, 2024 33,216,519 33,216,519      
Balance at end of period at Dec. 31, 2024 $ 1,621,187 $ 33,217 $ 187,062 $ 1,433,768 $ (32,860)