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EARNINGS PER SHARE
 3 Months Ended
Mar. 31, 2014
EARNINGS PER SHARE [Abstract]  
EARNINGS PER SHARE

9.EARNINGS PER SHARE

The following table sets forth the computation of basic and diluted earnings per share of common stock as follows:

 
 
Three Months Ended
March 31, 
 
 
2014 
 
2013 
Numerator for common earnings per share:
 
  
 
Net income
 
$
17,364
  
$
12,680
 
Numerator for basic and diluted earnings per share
 
$
17,364
  
$
12,680
 
 
        
Denominator for basic earnings per share:
        
Weighted average common shares outstanding
  
46,797
   
44,812
 
Effect of dilutive securities:
        
Stock options
  
2,410
   
2,834
 
Denominator for diluted earnings per share
  
49,207
   
47,646
 
 
        
Net income per share:
        
Basic
 
$
0.37
  
$
0.28
 
Diluted
 
$
0.35
  
$
0.27
 


For the three months ended March 31, 2014 and 2013, options to purchase approximately 1,271 and 1,373 shares of common stock, respectively, were not included in the calculation of the diluted earnings per share in corresponding periods because the effect would have been anti-dilutive.