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Common and Common Equivalent Shares
 12 Months Ended
Dec. 31, 2014
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, 2014, 2013 and 2012 is as follows (in thousands):

 

     Years Ended December 31,  
     2014      2013      2012  

Weighted average number of common shares outstanding

      98,588         99,112         97,386   

Weighted average number of dilutive common share equivalents

      1,299         1,857         1,996   
  

 

 

     

 

 

     

 

 

  

Weighted average number of common and common equivalent shares outstanding

      99,887         100,969         99,382   
  

 

 

     

 

 

     

 

 

  

Antidilutive securities not included in the diluted net income per common share calculation

      1         35         58