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Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Common Stock
Capital in Excess of Par Value
Retained Earnings
Treasury Stock
Accumulated Other Comprehensive Income (Loss)
Balance at beginning of year (in shares) at Dec. 31, 2019   9,043,771        
Balance at beginning of year at Dec. 31, 2019 $ 108,001 $ 9,190 $ 18,077 $ 86,496 $ (5,761) $ (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 15,113     15,113    
Adjustment for foreign currency translation 700         700
Stock-based compensation 1,847   1,847      
Shares issued (in shares)   97,454        
Shares issued $ 15 $ 98 (83)      
Shares repurchased held in treasury (in shares) (47,504) (80,186)        
Shares repurchased held in treasury $ (3,254)       (3,254)  
Balance at end of year (in shares) at Dec. 31, 2020 9,287,625 9,061,039        
Balance at end of year at Dec. 31, 2020 $ 122,422 $ 9,288 19,841 101,609 (9,015) 699
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 9,406     9,406    
Adjustment for foreign currency translation (155)         (155)
Stock-based compensation 2,352   2,352      
Shares issued (in shares)   75,468        
Shares issued $ 0 $ 75 (75)      
Shares repurchased held in treasury (in shares) 0 (20,923)        
Shares repurchased held in treasury $ (1,018)       (1,018)  
Balance at end of year (in shares) at Dec. 31, 2021 9,363,093 9,115,584        
Balance at end of year at Dec. 31, 2021 $ 133,007 $ 9,363 $ 22,118 $ 111,015 $ (10,033) $ 544