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Common and Common Equivalent Shares
 12 Months Ended
Dec. 31, 2015
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, 2015, 2014 and 2013 is as follows (in thousands):

 

     Years Ended December 31,  
     2015      2014      2013  

Weighted average number of common shares outstanding

      93,077         98,588         99,112   

Weighted average number of dilutive common share equivalents

      883         1,299         1,857   
  

 

 

     

 

 

     

 

 

  

Weighted average number of common and common equivalent shares outstanding

      93,960         99,887         100,969   
  

 

 

     

 

 

     

 

 

  

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

      —           1         35