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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
Balance at beginning of year (in shares) at Dec. 31, 2020   9,061,039        
Balance at beginning 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 3,596     3,596    
Adjustment for foreign currency translation 631         631
Shares issued 422   422      
Shares issued (in shares)   5,776        
Shares issued 0 $ 5 (5)      
Shares repurchased held in treasury (in shares)   (268)        
Shares repurchased held in treasury (13)       (13)  
Balance at end of period (in shares) at Mar. 31, 2021   9,066,547        
Balance at end of period at Mar. 31, 2021 $ 127,058 $ 9,293 20,258 105,205 (9,028) 1,330
Balance at beginning of year (in shares) at Dec. 31, 2021 9,363,093 9,115,584        
Balance at beginning of year at Dec. 31, 2021 $ 133,007 $ 9,363 22,118 111,015 (10,033) 544
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 8,986     8,986    
Adjustment for foreign currency translation 461         461
Shares issued 311   311      
Shares issued (in shares)   4,583        
Shares issued 0 $ 5 (5)      
Shares repurchased held in treasury (in shares)   0        
Shares repurchased held in treasury $ (33)       (33)  
Balance at end of period (in shares) at Mar. 31, 2022 9,368,463 9,120,167        
Balance at end of period at Mar. 31, 2022 $ 142,732 $ 9,368 $ 22,424 $ 120,001 $ (10,066) $ 1,005