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EARNINGS PER SHARE
 9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE     
The following are computations of basic and diluted earnings per share (in thousands except for per share amounts):
 
 
Three Months Ended
 
Nine Months Ended
 
 
September 30,
 
September 30,
 
 
2013
 
2012
 
2013
 
2012
Numerator for basic and diluted earnings per share:
 
 

 
 

 
 

 
 

Net income
 
$
35,361

 
$
12,359

 
$
68,765

 
$
67,800

 
 
 
 
 
 
 
 
 
Denominator:
 
 

 
 

 
 

 
 

Basic shares outstanding
 
60,610

 
53,374

 
60,542

 
53,303

Dilutive effect of equity-based compensation awards
 
150

 
191

 
150

 
216

Dilutive shares outstanding
 
60,760

 
53,565

 
60,692

 
53,519

 
 
 
 
 
 
 
 
 
Basic earnings per share:
 
$
0.58

 
$
0.23

 
$
1.14

 
$
1.27

 
 
 

 
 

 
 

 
 

Diluted earnings per share:
 
$
0.58

 
$
0.23

 
$
1.13

 
$
1.27


For the three and nine months ended September 30, 2013, the dilutive effect of all then outstanding options, restricted stock and performance awards is included in the EPS calculations above except for 173,000 outstanding performance stock awards for which the performance criteria were not attained at that time. For the three and nine months ended September 30, 2012, the EPS calculations above include the dilutive effects of all then outstanding options, restricted stock, and performance awards except for 66,000 outstanding performance stock awards for which the performance criteria were not attained at that time.