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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Thousands
Total
Director
Employee
Common Stock
Common Stock
Director
Common Stock
Employee
Paid-in capital
Paid-in capital
Director
Paid-in capital
Employee
Retained earnings
Accumulated other comprehensive loss
Beginning Balance (in shares) at Dec. 31, 2012       12,754,000              
Beginning Balance at Dec. 31, 2012 $ 172,230     $ 128     $ 142,489     $ 33,849 $ (4,236)
Comprehensive income:                      
Net income 9,281                 9,281  
Translation adjustment (140)                   (140)
Derivative fair value adjustment (Note F) 241                   241
Effect of retirement benefit obligations 415                   415
Comprehensive income (loss) 9,797                    
Shares issued to employees/directors (Note G) (in shares)         21,000            
Shares issued to employees/directors (Note G)   $ 277           $ 277      
Stock compensation expense (Note G) 2,604           2,604        
Reduction of tax benefit from stock options, net $ (310)           (310)        
Exercise of stock options (in shares) 247,827     248,000              
Exercise of stock options $ 1,215     $ 2     1,213        
Treasury Stock Repurchase (in shares) (245,575)     (246,000)              
Treasury Stock Repurchase $ (3,229)     $ (2)           (3,227)  
Dividends (Note G) (1,679)                 (1,679)  
Ending Balance (in shares) at Dec. 31, 2013       12,777,000              
Ending Balance at Dec. 31, 2013 180,905     $ 128     146,273     38,224 (3,720)
Comprehensive income:                      
Net income 1,544                 1,544  
Translation adjustment (4,736)                   (4,736)
Derivative fair value adjustment (Note F) 13                   13
Effect of retirement benefit obligations (1,479)                   (1,479)
Comprehensive income (loss) (4,658)                    
Shares issued to employees/directors (Note G) (in shares)         23,000 5,000          
Shares issued to employees/directors (Note G)   344 $ 2         344 $ 2    
Stock compensation expense (Note G) 2,489           2,489        
Issuance of common stock for acquisition of business (in shares)       581,000              
Issuance of common stock for acquisition of business $ 8,382     $ 6     8,376        
Exercise of stock options (in shares) 365,223     326,000              
Tax provision on exercise of stock options $ 343           343        
Exercise of stock options $ 2,491     $ 3     2,488        
Treasury Stock Repurchase (in shares) 0                    
Dividends (Note G) $ (2,065)                 (2,065)  
Ending Balance (in shares) at Dec. 31, 2014       13,712,000              
Ending Balance at Dec. 31, 2014 188,233     $ 137     160,315     37,703 (9,922)
Comprehensive income:                      
Net income 12,278                 12,278  
Translation adjustment (5,281)                   (5,281)
Derivative fair value adjustment (Note F) (2)                   (2)
Effect of retirement benefit obligations 1,020                   1,020
Comprehensive income (loss) 8,015                    
Shares issued to employees/directors (Note G) (in shares)         28,000 189,000          
Shares issued to employees/directors (Note G)   $ 416 $ 1,657     $ 2   $ 416 $ 1,655    
Stock compensation expense (Note G) 2,689           2,689        
Reduction of tax benefit from stock options, net $ (138)           (138)        
Exercise of stock options (in shares) 110,375     101,000              
Exercise of stock options $ 844     $ 1     843        
Treasury Stock Repurchase (in shares) 0                    
Dividends (Note G) $ (2,248)                 (2,248)  
Ending Balance (in shares) at Dec. 31, 2015       14,030,000              
Ending Balance at Dec. 31, 2015 $ 199,468     $ 140     $ 165,780     $ 47,733 $ (14,185)