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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
Noncontrolling Interest
Beginning balance (in shares) at Dec. 31, 2012   21,491 6,516        
Beginning balance at Dec. 31, 2012 $ 250,650 $ 215 $ (101,793) $ 180,607 $ 1,052 $ 170,569 $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income (loss) 22,963         22,963 0
Currency translation adjustment 1,930       1,930    
Shares issued for employee benefit plan and compensation (in shares)   174          
Shares issued for employee benefit plan and compensation $ 747 $ 1   746      
Purchase of treasury shares (in shares) (153)   (153)        
Purchase of treasury shares $ (3,607)   $ (3,607)        
Stock options exercised (in shares) 679 679          
Stock options exercised $ 12,371 $ 7   12,364      
Shares Issued to Directors (in shares)     30        
Shares issued to Directors 0   $ 420 (420)      
Stock-based compensation expense 5,342     5,342      
Tax benefit from exercise of non-qualified stock options and vested restricted stock 874     874      
Ending balance (in shares) at Dec. 31, 2013   22,344 6,639        
Ending balance at Dec. 31, 2013 291,270 $ 223 $ (104,980) 199,513 2,982 193,532 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income (loss) 32,534         32,534 0
Currency translation adjustment (7,428)       (7,428)    
Shares issued for employee benefit plan and compensation (in shares)   160          
Shares issued for employee benefit plan and compensation $ 847 $ 2   845      
Purchase of treasury shares (in shares) (384)   (384)        
Purchase of treasury shares $ (16,168)   $ (16,168)        
Stock options exercised (in shares) 391 391          
Stock options exercised $ 8,122 $ 4   8,118      
Shares Issued to Directors (in shares)   15 15        
Shares issued to Directors 0 $ 0 $ 210 (210)      
Stock-based compensation expense 6,444     6,444      
Ending balance (in shares) at Dec. 31, 2014   22,910 7,008        
Ending balance at Dec. 31, 2014 315,621 $ 229 $ (120,938) 214,710 (4,446) 226,066 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Net Income (loss) 29,173         29,174 (1)
Currency translation adjustment (11,353)       (11,353)    
Shares issued for employee benefit plan and compensation (in shares)   165          
Shares issued for employee benefit plan and compensation $ 868 $ 2   866      
Purchase of treasury shares (in shares) (1,817)   (1,817)        
Purchase of treasury shares $ (89,395)   $ (89,395)        
Stock options exercised (in shares) 71 71          
Stock options exercised $ 1,712 $ 1   1,711      
Shares Issued to Directors (in shares)   30          
Shares issued to Directors 0 $ 0   0      
Stock-based compensation expense 7,913     7,913      
Tax benefit from exercise of non-qualified stock options and vested restricted stock 3,069     3,069      
Business Combination 378           378
Distribution to noncontrolling interest (78)           (78)
Ending balance (in shares) at Dec. 31, 2015   23,176 8,825        
Ending balance at Dec. 31, 2015 $ 257,908 $ 232 $ (210,333) $ 228,269 $ (15,799) $ 255,240 $ 299