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Net Income Per Share (Tables)
3 Months Ended
Mar. 31, 2019
Earnings Per Share [Abstract]  
Computation of Basic and Diluted Net Income Per Share

The following table sets forth the computation of basic and diluted net income per share:

     Three Months Ended March 31,  
     2019      2018  

Numerator:

     

Net income

   $ 12,455      $ 105,121  
  

 

 

    

 

 

 

Denominator:

     

Shares used in net income per common share – basic

     54,147,000        54,423,000  

Effect of dilutive securities:

     

Restricted stock units, stock appreciation rights and shares issued under employee stock purchase plan

     701,000        863,000  
  

 

 

    

 

 

 

Shares used in net income per common share – diluted

     54,848,000        55,286,000  
  

 

 

    

 

 

 

Net income per common share:

     

Basic

   $ 0.23      $ 1.93  

Diluted

   $ 0.23      $ 1.90