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EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2013
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE
The following table sets forth the computation of basic and diluted earnings per share:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2013
 
2012
 
2013
 
2012
Numerator:
 

 
 

 
 

 
 

Net income
$
72,606

 
$
66,319

 
$
139,412

 
$
130,562

Denominator:
 

 
 

 
 

 
 

Basic weighted average shares outstanding
82,419

 
83,328

 
82,569

 
83,390

Effect of dilutive securities - Stock options and awards
992

 
1,120

 
1,037

 
1,137

Diluted weighted average shares outstanding
83,411

 
84,448

 
83,606

 
84,527

Basic earnings per share
$
0.88

 
$
0.80

 
$
1.69

 
$
1.57

Diluted earnings per share
$
0.87

 
$
0.79

 
$
1.67

 
$
1.54


For the three months ended June 30, 2013 and 2012, common shares subject to equity-based awards of 418,407 and 45,188, respectively, were excluded from the computation of diluted earnings per share because the effect of their exercise would be anti-dilutive. For the six months ended June 30, 2013 and 2012, common shares subject to equity-based awards of 420,770 and 43,211, respectively, were excluded from the computation of diluted earnings per share because the effect of their exercise would be anti-dilutive.