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CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Common Stock Issued
Common Stock in Treasury
Paid-in Capital
Accumulated Other Comprehensive Income (Loss)
Retained Earnings
Balance (in shares) at Dec. 31, 2018   23,933 (10,116)      
Balance at Dec. 31, 2018 $ 262,960 $ 239 $ (275,889) $ 276,103 $ (20,281) $ 282,788
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 3,630         3,630
Currency translation adjustment (2,500)       (2,500)  
Change in foreign currency translation due to sale of Argentina subsidiary 0          
Shares issued for employee benefit plan and compensation (in shares)   133        
Shares issued for employee benefit plan and compensation $ 947 $ 2   945    
Purchase of treasury shares (in shares) (58)   (58)      
Purchase of treasury shares $ (1,928)   $ (1,928)      
Stock options exercised (in shares) 22 22        
Stock options exercised $ 448 $ 0   448    
Shares Issued to directors (in shares)   30        
Shares issued to directors 0 $ 0   0    
Employee and director stock-based compensation 8,845     8,845    
Performance-based common stock warrants 1,997     1,997    
Balance (in shares) at Dec. 31, 2019   24,118 (10,174)      
Balance at Dec. 31, 2019 274,399 $ 241 $ (277,817) 288,338 (22,781) 286,418
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 38,572         38,572
Currency translation adjustment 4,259       4,259  
Change in foreign currency translation due to sale of Argentina subsidiary 0          
Shares issued for employee benefit plan and compensation (in shares)   169        
Shares issued for employee benefit plan and compensation $ 1,136 $ 1   1,135    
Purchase of treasury shares (in shares) (444)   (444)      
Purchase of treasury shares $ (17,678)   $ (17,678)      
Stock options exercised (in shares) 80 80        
Stock options exercised $ 2,805 $ 1   2,804    
Shares Issued to directors (in shares)   25        
Shares issued to directors 0 $ 1   (1)    
Employee and director stock-based compensation 9,122     9,122    
Performance-based common stock warrants 686     686    
Balance (in shares) at Dec. 31, 2020   24,392 (10,618)      
Balance at Dec. 31, 2020 313,301 $ 244 $ (295,495) 302,084 (18,522) 324,990
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income 5,301         5,301
Currency translation adjustment (427)       (427)  
Change in foreign currency translation due to sale of Argentina subsidiary 5,425       5,425  
Shares issued for employee benefit plan and compensation (in shares)   203        
Shares issued for employee benefit plan and compensation $ 1,092 $ 2   1,090    
Purchase of treasury shares (in shares) (1,243)   (1,243)      
Purchase of treasury shares $ (59,664)   $ (59,664)      
Stock options exercised (in shares) 54 54        
Stock options exercised $ 1,638 $ 1   1,637    
Shares Issued to directors (in shares)   30        
Shares issued to directors 0 $ 0   0    
Employee and director stock-based compensation 9,969     9,969    
Performance-based common stock warrants (686)     (686)    
Balance (in shares) at Dec. 31, 2021   24,679 (11,861)      
Balance at Dec. 31, 2021 $ 275,949 $ 247 $ (355,159) $ 314,094 $ (13,524) $ 330,291