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Earnings Per Share
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Earnings Per Share
11. Earnings Per Share

 

Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings per share calculations for the periods indicated:

 

Year ended December 31,   2013     2012     2011  
                   
Numerator:                        
Net income   $ 111,272     $ 70,629     $ 40,015  
Denominator:                        
Weighted average number of common shares outstanding - Basic     19,327,394       19,160,849       18,919,489  
Dilutive effect of options and restricted stock units outstanding under the Company's employee compensation plans     613,324       474,392       232,909  
Weighted average number of common shares outstanding - Diluted     19,940,718       19,635,241       19,152,398  

 

The dilutive effect of outstanding options and restricted stock units is calculated using the treasury stock method. There are no anti-dilutive stock options in 2013, 2012, and 2011 because the closing price of the Company's stock on December 31, 2013, 2012, and 2011 exceeded the strike price of all outstanding options on that date.