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Common and Common Equivalent Shares
 12 Months Ended
Dec. 31, 2013
Earnings Per Share [Abstract]  
Common and Common Equivalent Shares

12.    Common and Common Equivalent Shares:

The calculation of shares used in the basic and diluted net income per share calculation for the years ended December 31, 2013, 2012 and 2011 is as follows (in thousands):

 

     Years Ended December 31,  
     2013      2012      2011  

Weighted average number of common shares outstanding

      99,112         97,386         95,412   

Weighted average number of dilutive common share equivalents

      1,857         1,996         2,180   
  

 

 

     

 

 

     

 

 

  

Weighted average number of common and common equivalent shares outstanding

      100,969         99,382         97,592   
  

 

 

     

 

 

     

 

 

  

Antidilutive securities not included in the diluted earnings per share calculation

      35         58         90