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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, 2017   23,760 (9,703)      
Balance at Dec. 31, 2017 $ 257,633 $ 238 $ (262,065) $ 265,195 $ (16,599) $ 270,864
Increase (Decrease) in Stockholders' Equity [Roll Forward]            
Net income (loss) (587)         (587)
Currency translation adjustment 3,646       3,646  
Shares issued for employee benefit plan and compensation (in shares)   42        
Shares issued for employee benefit plan and compensation $ 336     336    
Purchase of treasury shares (in shares) (13)   (13)      
Purchase of treasury shares $ (615)   $ (615)      
Stock options exercised (in shares)   20        
Stock options exercised 439 $ 0   439    
Shares issued to directors (in shares)   8        
Shares issued to directors 0 $ 0        
Employee and director stock-based compensation 2,204     2,204    
Performance - based common stock warrants 471     471    
Balance (in shares) at Mar. 31, 2018   23,830 (9,716)      
Balance at Mar. 31, 2018 263,527 $ 238 $ (262,680) 268,645 (12,953) 270,277
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 (loss) (1,005)         (1,005)
Currency translation adjustment 1,733       1,733  
Shares issued for employee benefit plan and compensation (in shares)   78        
Shares issued for employee benefit plan and compensation $ 347 $ 1   346    
Purchase of treasury shares (in shares) (43)   (43)      
Purchase of treasury shares $ (1,215)   $ (1,215)      
Stock options exercised (in shares) 0          
Shares issued to directors (in shares)   8        
Shares issued to directors $ 0 $ 0        
Employee and director stock-based compensation 1,918     1,918    
Performance - based common stock warrants 434     434    
Balance (in shares) at Mar. 31, 2019   24,019 (10,159)      
Balance at Mar. 31, 2019 $ 265,172 $ 240 $ (277,104) $ 278,801 $ (18,548) $ 281,783