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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Reconciliation of Basic and Diluted Earnings Per Share

The following is a reconciliation of the basic and diluted earnings per share computation:

 

     Year Ended December 31,  
     2015      2014      2013  
     (shares in thousands)  

Net income

   $ 80,052       $ 61,051       $ 51,537   
  

 

 

    

 

 

    

 

 

 

Shares of common stock and common stock equivalents:

        

Weighted average shares used in basic computation

     137,242         131,770         126,651   

Dilutive effect of common stock equivalents

     1,583         6,781         13,146   
  

 

 

    

 

 

    

 

 

 

Weighted average shares used in dilutive computation

     138,825         138,551         139,797   
  

 

 

    

 

 

    

 

 

 

Basic earnings per share

   $ 0.58       $ 0.46       $ 0.41   

Diluted earnings per share

   $ 0.58       $ 0.44       $ 0.37