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Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)
In Thousands, except Share data
Total
Common stock
Additional paid-in capital
Retained earnings
Accumulated Other Comprehensive Income
Treasury stock
Balance, value at Dec. 31, 2011 $ 187,072 [1] $ 2,985 $ 45,966 $ 143,524 $ (2,250) $ (3,153)
Balance, shares at Dec. 31, 2011   29,845,047       2,260,996
Stocks issued under ESPP, shares   19,766        
Stocks issued under ESPP, value 268 2 266      
Cash Dividends on common stock (per share) (1,380)     (1,380)    
Foreign currency Translation adjustment, net 542       542  
Stock based compensation 422   422      
Change in fair value of interest swaps 22       22  
Stock options exercised, and termination of restricted stock units, shares   218,253        
Stock options exercised, and termination of restricted stock units, units 149 22 127      
Excess tax benefits from share based payment arrangements 43   43      
Net Income 8,734     8,734    
Balance, value at Mar. 31, 2012 195,872 3,009 46,824 150,878 (1,686) (3,153)
Balance, shares at Mar. 31, 2012   30,083,066       2,260,996
Foreign currency Translation adjustment, net (420)       (420)  
Stock based compensation 609   609      
Change in fair value of interest swaps 24       24  
Stock options exercised, and termination of restricted stock units, shares   75,549        
Stock options exercised, and termination of restricted stock units, units 868 7 861      
Excess tax benefits from share based payment arrangements 117   117      
Net Income 8,744     8,744    
Balance, value at Jun. 30, 2012 205,814 3,016 48,411 159,622 (2,082) (3,153)
Balance, shares at Jun. 30, 2012   30,158,615       2,260,996
Stocks issued under ESPP, shares   20,350        
Stocks issued under ESPP, value 283 2 281      
Cash Dividends on common stock (per share) (1,947)     (1,947)    
Foreign currency Translation adjustment, net 306       306  
Stock based compensation 825   825      
Change in fair value of interest swaps 41       41  
Stock options exercised, and termination of restricted stock units, shares   137,829        
Stock options exercised, and termination of restricted stock units, units 1,692 14 1,678      
Excess tax benefits from share based payment arrangements 333   333      
Net Income 8,076     8,076    
Balance, value at Sep. 30, 2012 $ 215,423 $ 3,032 $ 51,528 $ 165,751 $ (1,735) $ (3,153)
Balance, shares at Sep. 30, 2012   30,316,794       2,260,996
[1] The balance sheet at December 31, 2011 has been derived from the audited financial statements at that date.