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Consolidated Statement Of Stockholders' Equity (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-in Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Non- Controlling Interest
Treasury Stock
Beginning Balance at Dec. 31, 2012 $ 225,436 $ 3,077 $ 54,323 $ 174,243 $ (1,762) $ 359 $ (4,804)
Beginning Balance (in shares) at Dec. 31, 2012 30,766,730 30,766,730         2,310,634
Stocks issued under ESPP (in shares)   12,263          
Stocks issued under ESPP 378 2 376        
Cash dividends on common stock ($0.05 per share) (1,976)     (1,976)      
Foreign currency translation adjustment, net 407       407    
Stock based compensation 688   688        
Change in fair value of interest rate swaps 178       178    
Stock options exercised and grants of restricted stock units (in shares)   144,550          
Stock options exercised and grants of restricted stock units 49 15 34        
Excess tax benefits from share based payment arrangements 57   57        
Net income (loss) 16,819     16,915   (96)  
Ending Balance at Mar. 31, 2013 242,036 3,094 55,478 189,182 (1,177) 263 (4,804)
Ending Balance (in shares) at Mar. 31, 2013   30,923,543         2,310,634
Cash dividends on common stock ($0.05 per share) (1,413)     (1,413)      
Foreign currency translation adjustment, net (476)       (476)    
Stock based compensation 1,058   1,058        
Change in fair value of interest rate swaps 174       174    
Stock options exercised and grants of restricted stock units (in shares)   48,505          
Stock options exercised and grants of restricted stock units 101 5 96        
Net income (loss) 8,266     8,386   (120)  
Ending Balance at Jun. 30, 2013 $ 249,746 $ 3,099 $ 56,632 $ 196,155 $ (1,479) $ 143 $ (4,804)
Ending Balance (in shares) at Jun. 30, 2013 30,972,048 30,972,048         2,310,634