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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 Income (Loss)
Total
Balance at Dec. 31, 2019 $ 3,387   $ 76,573 $ (2,748) $ 77,212
Balance (in shares) at Dec. 31, 2019 33,870        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock issued for stock incentive plans, net $ 18 $ 558     576
Stock issued for stock incentive plans, net (in shares) 175        
Stock purchased and retired $ (8) (558) (489)   (1,055)
Stock purchased and retired (in shares) (73)        
Net income     4,208   4,208
Pension adjustment, net of taxes       119 119
Dividends declared     (4,074)   (4,074)
Balance at Mar. 31, 2020 $ 3,397   76,218 (2,629) 76,986
Balance (in shares) at Mar. 31, 2020 33,972        
Balance at Dec. 31, 2020 $ 3,387   83,079 (1,947) 84,519
Balance (in shares) at Dec. 31, 2020 33,869        
Increase (Decrease) in Stockholders' Equity [Roll Forward]          
Stock issued for stock incentive plans, net $ 18 535     553
Stock issued for stock incentive plans, net (in shares) 189        
Stock purchased and retired $ (6) $ (535) (509)   (1,050)
Stock purchased and retired (in shares) (64)        
Net income     8,097   8,097
Pension adjustment, net of taxes       14 14
Dividends declared     (3,398)   (3,398)
Balance at Mar. 31, 2021 $ 3,399   $ 87,269 $ (1,933) $ 88,735
Balance (in shares) at Mar. 31, 2021 33,994