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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
Beginning balance (in shares) at Dec. 31, 2020   24,392        
Beginning balance at Dec. 31, 2020 $ 313,301 $ 244 $ (295,495) $ 302,084 $ (18,522) $ 324,990
Beginning balance (in shares) at Dec. 31, 2020     (10,618)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 6,993         6,993
Currency translation adjustment (2,868)       (2,868)  
Shares issued for employee benefit plan and compensation (in shares)   160        
Shares issued for employee benefit plan and compensation 410 $ 2   408    
Purchase of treasury shares (in shares)     (191)      
Purchase of treasury shares (10,951)   $ (10,951)      
Stock options exercised (in shares)   22        
Stock options exercised 991     991    
Shares issued to directors (in shares)   7        
Shares issued to directors 0          
Employee and director stock-based compensation 2,600     2,600    
Performance-based common stock warrants 143     143    
Ending balance (in shares) at Mar. 31, 2021   24,581        
Ending balance at Mar. 31, 2021 310,619 $ 246 $ (306,446) 306,226 (21,390) 331,983
Ending balance (in shares) at Mar. 31, 2021     (10,809)      
Beginning balance (in shares) at Dec. 31, 2020   24,392        
Beginning balance at Dec. 31, 2020 313,301 $ 244 $ (295,495) 302,084 (18,522) 324,990
Beginning balance (in shares) at Dec. 31, 2020     (10,618)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 12,586          
Currency translation adjustment $ 1,175          
Purchase of treasury shares (in shares) (511)          
Purchase of treasury shares $ (26,684)          
Ending balance (in shares) at Jun. 30, 2021   24,604        
Ending balance at Jun. 30, 2021 307,368 $ 246 $ (322,179) 309,072 (17,347) 337,576
Ending balance (in shares) at Jun. 30, 2021     (11,129)      
Beginning balance (in shares) at Mar. 31, 2021   24,581        
Beginning balance at Mar. 31, 2021 310,619 $ 246 $ (306,446) 306,226 (21,390) 331,983
Beginning balance (in shares) at Mar. 31, 2021     (10,809)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 5,593         5,593
Currency translation adjustment 4,043       4,043  
Shares issued for employee benefit plan and compensation (in shares)   15        
Shares issued for employee benefit plan and compensation 271     271    
Purchase of treasury shares (in shares)     (320)      
Purchase of treasury shares (15,733)   $ (15,733)      
Shares issued to directors (in shares)   8        
Shares issued to directors 0          
Employee and director stock-based compensation 2,444     2,444    
Performance-based common stock warrants 131     131    
Ending balance (in shares) at Jun. 30, 2021   24,604        
Ending balance at Jun. 30, 2021 307,368 $ 246 $ (322,179) 309,072 (17,347) 337,576
Ending balance (in shares) at Jun. 30, 2021     (11,129)      
Beginning balance (in shares) at Dec. 31, 2021   24,679        
Beginning balance at Dec. 31, 2021 275,949 $ 247 $ (355,159) 314,094 (13,524) 330,291
Beginning balance (in shares) at Dec. 31, 2021     (11,861)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) (2,910)         (2,910)
Currency translation adjustment 1,849       1,849  
Shares issued for employee benefit plan and compensation (in shares)   145        
Shares issued for employee benefit plan and compensation 324 $ 1   323    
Purchase of treasury shares (in shares)     (225)      
Purchase of treasury shares (7,354)   $ (7,354)      
Shares issued to directors (in shares)   7        
Shares issued to directors 0          
Employee and director stock-based compensation 2,499     2,499    
Ending balance (in shares) at Mar. 31, 2022   24,831        
Ending balance at Mar. 31, 2022 270,357 $ 248 $ (362,513) 316,916 (11,675) 327,381
Ending balance (in shares) at Mar. 31, 2022     (12,086)      
Beginning balance (in shares) at Dec. 31, 2021   24,679        
Beginning balance at Dec. 31, 2021 275,949 $ 247 $ (355,159) 314,094 (13,524) 330,291
Beginning balance (in shares) at Dec. 31, 2021     (11,861)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 78          
Currency translation adjustment $ (5,464)          
Purchase of treasury shares (in shares) (355)          
Purchase of treasury shares $ (11,211)          
Stock options exercised (in shares) 0          
Ending balance (in shares) at Jun. 30, 2022   24,862        
Ending balance at Jun. 30, 2022 $ 265,114 $ 249 $ (366,370) 319,854 (18,988) 330,369
Ending balance (in shares) at Jun. 30, 2022     (12,216)      
Beginning balance (in shares) at Mar. 31, 2022   24,831        
Beginning balance at Mar. 31, 2022 270,357 $ 248 $ (362,513) 316,916 (11,675) 327,381
Beginning balance (in shares) at Mar. 31, 2022     (12,086)      
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) 2,988         2,988
Currency translation adjustment (7,313)       (7,313)  
Shares issued for employee benefit plan and compensation (in shares)   23        
Shares issued for employee benefit plan and compensation 302 $ 1   301    
Purchase of treasury shares (in shares)     (130)      
Purchase of treasury shares (3,857)   $ (3,857)      
Shares issued to directors (in shares)   8        
Shares issued to directors 0          
Employee and director stock-based compensation 2,637     2,637    
Ending balance (in shares) at Jun. 30, 2022   24,862        
Ending balance at Jun. 30, 2022 $ 265,114 $ 249 $ (366,370) $ 319,854 $ (18,988) $ 330,369
Ending balance (in shares) at Jun. 30, 2022     (12,216)