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NET INCOME PER SHARE (TABLES)
 9 Months Ended
Sep. 30, 2015
NET INCOME PER SHARE [Abstract]  
Schedule of Diluted Shares Calculation

The following table sets forth the computation of basic and diluted shares for the periods indicated (in thousands):

 

 

 

 

 

 

 

 

 

 

 

 

Three Months Ended September 30,

 

Nine Months Ended September 30,

 

    

2015

    

2014

    

2015

    

2014

 

 

 

 

 

 

 

 

 

Shares used in basic earnings per share calculation

 
48,345

 
49,093

 
48,346

 
49,493

Effect of dilutive securities:

 

 

 

 

 

 

 

 

Stock options

 
278

 
420

 
355

 
420

Restricted stock units

 
291

 
427

 
332

 
425

Performance-based restricted stock units

 
22

 

—

 
19

 

—

Total effects of dilutive securities

 
591

 
847

 
706

 
845

Shares used in dilutive earnings per share calculation

 
48,936

 
49,940

 
49,052

 
50,338