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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Common Stock
Capital in Excess of Par Value
Retained Earnings
Accumulated Other Comprehensive Loss
Total
Balance at Dec. 31, 2022 $ 3,422   $ 122,954 $ (1,995) $ 124,381
Balance (in shares) at Dec. 31, 2022 34,218        
Increase (Decrease) in Stockholders' Equity          
Stock issued for stock incentive plans, net $ 29 $ 748     777
Stock issued for stock incentive plans, net (in shares) 289        
Stock purchased and retired $ (7) (748) (155)   (910)
Stock purchased and retired (in shares) (69)        
Net income     11,549   11,549
Pension adjustment, net of taxes       1,886 1,886
Cash dividends     (4,817)   (4,817)
Balance at Mar. 31, 2023 $ 3,444   129,531 (109) 132,866
Balance (in shares) at Mar. 31, 2023 34,438        
Balance at Dec. 31, 2022 $ 3,422   122,954 (1,995) 124,381
Balance (in shares) at Dec. 31, 2022 34,218        
Increase (Decrease) in Stockholders' Equity          
Net income         36,273
Pension adjustment, net of taxes         1,983
Balance at Sep. 30, 2023 $ 3,447   146,678 (12) 150,113
Balance (in shares) at Sep. 30, 2023 34,467        
Balance at Mar. 31, 2023 $ 3,444   129,531 (109) 132,866
Balance (in shares) at Mar. 31, 2023 34,438        
Increase (Decrease) in Stockholders' Equity          
Stock issued for stock incentive plans, net $ 3 1,230     1,233
Stock issued for stock incentive plans, net (in shares) 29        
Stock purchased and retired   (1,230) 1,230    
Net income     14,321   14,321
Pension adjustment, net of taxes       97 97
Cash dividends     (4,820)   (4,820)
Balance at Jun. 30, 2023 $ 3,447   140,262 (12) 143,697
Balance (in shares) at Jun. 30, 2023 34,467        
Increase (Decrease) in Stockholders' Equity          
Stock issued for stock incentive plans, net   834     834
Stock purchased and retired   (834) 834    
Net income     10,403   10,403
Cash dividends     (4,821)   (4,821)
Balance at Sep. 30, 2023 $ 3,447   146,678 $ (12) 150,113
Balance (in shares) at Sep. 30, 2023 34,467        
Balance at Dec. 31, 2023 $ 3,447   148,141   151,588
Balance (in shares) at Dec. 31, 2023 34,467        
Increase (Decrease) in Stockholders' Equity          
Stock issued for stock incentive plans, net $ 30 926     956
Stock issued for stock incentive plans, net (in shares) 301        
Stock purchased and retired $ (8) (926) 27   (907)
Stock purchased and retired (in shares) (85)        
Net income     4,597   4,597
Cash dividends     (4,852)   (4,852)
Balance at Mar. 31, 2024 $ 3,469   147,913   151,382
Balance (in shares) at Mar. 31, 2024 34,683        
Balance at Dec. 31, 2023 $ 3,447   148,141   151,588
Balance (in shares) at Dec. 31, 2023 34,467        
Increase (Decrease) in Stockholders' Equity          
Net income         13,586
Balance at Sep. 30, 2024 $ 3,471   125,320   128,791
Balance (in shares) at Sep. 30, 2024 34,713        
Balance at Mar. 31, 2024 $ 3,469   147,913   151,382
Balance (in shares) at Mar. 31, 2024 34,683        
Increase (Decrease) in Stockholders' Equity          
Stock issued for stock incentive plans, net $ 3 1,424     1,427
Stock issued for stock incentive plans, net (in shares) 35        
Stock purchased and retired   (1,424) 1,424    
Net income     5,585   5,585
Cash dividends     (29,138)   (29,138)
Balance at Jun. 30, 2024 $ 3,472   125,784   129,256
Balance (in shares) at Jun. 30, 2024 34,718        
Increase (Decrease) in Stockholders' Equity          
Stock issued for stock incentive plans, net   1,012     1,012
Stock issued for stock incentive plans, net (in shares) (2)        
Stock purchased and retired $ (1) $ (1,012) 987   (26)
Stock purchased and retired (in shares) (3)        
Net income     3,404   3,404
Cash dividends     (4,855)   (4,855)
Balance at Sep. 30, 2024 $ 3,471   $ 125,320   $ 128,791
Balance (in shares) at Sep. 30, 2024 34,713