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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $)
In Thousands, unless otherwise specified
Total
Common Stock
Additional Paid-In Capital
Retained Earnings
Balance at Dec. 31, 2009 $ 174,115 $ 198 $ 142,679 $ 31,238
Increase (Decrease) in Stockholders Equity        
Net income 16,122     16,122
Stock issued under compensation plans, net 671 2 669  
Tax benefit from stock-based awards 198   198  
Stock-based compensation expense 1,603   1,603  
Balance at Dec. 31, 2010 192,709 200 145,149 47,360
Increase (Decrease) in Stockholders Equity        
Net income 18,298     18,298
Stock issued under compensation plans, net 1,290 3 1,287  
Tax benefit from stock-based awards 1,266   1,266  
Stock-based compensation expense 2,130   2,130  
Stock issued - other 45   45  
Balance at Dec. 31, 2011 215,738 203 149,877 65,658
Increase (Decrease) in Stockholders Equity        
Net income 34,262     34,262
Stock issued under compensation plans, net 1,309 3 1,306  
Tax benefit from stock-based awards 419   419  
Stock-based compensation expense 2,924   2,924  
Stock issued - other 38   38  
Balance at Dec. 31, 2012 $ 254,690 $ 206 $ 154,564 $ 99,920