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EARNINGS PER SHARE
 3 Months Ended
Mar. 31, 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 March 31,
 
2013
 
2012
Numerator:
 

 
 

Net income
$
66,806

 
$
64,243

Denominator:
 

 
 

Basic weighted average shares outstanding
82,719

 
83,452

Effect of dilutive securities - Stock options and awards
1,067

 
1,156

Diluted weighted average shares outstanding
83,786

 
84,608

Basic earnings per share
$
0.81

 
$
0.77

Diluted earnings per share
$
0.80

 
$
0.76


For the three months ended March 31, 2013 and 2012, common shares subject to equity-based awards of 392,390 and 455,081, respectively, were excluded from the computation of diluted earnings per share because the effect of their exercise would be anti-dilutive.