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Common and Common Equivalent Shares
 12 Months Ended
Dec. 31, 2016
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, 2016, 2015 and 2014 is as follows (in thousands):

 

     Years Ended December 31,  
     2016      2015      2014  

Weighted average number of common shares outstanding

      92,422         93,077         98,588   

Weighted average number of dilutive common share equivalents

      687         883         1,299   
  

 

 

     

 

 

     

 

 

  

Weighted average number of common and common equivalent shares outstanding

      93,109         93,960         99,887   
  

 

 

     

 

 

     

 

 

  

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

      2         —           1