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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 are computations of basic and diluted earnings per share (in thousands except for per share amounts):
 
 
Three Months Ended
 
 
March 31,
 
 
2013
 
2012
Numerator for basic and diluted earnings per share:
 
 

 
 

Net income
 
$
10,502

 
$
32,015

 
 
 
 
 
Denominator:
 
 

 
 

Basic shares outstanding
 
60,464

 
53,227

Dilutive effect of equity-based compensation awards
 
166

 
261

Dilutive shares outstanding
 
60,630

 
53,488

 
 
 
 
 
Basic earnings per share:
 
$
0.17

 
$
0.60

 
 
 

 
 

Diluted earnings per share:
 
$
0.17

 
$
0.60


For the three months ended March 31, 2013, the dilutive effect of all then outstanding options, restricted stock and performance awards is included in the EPS calculations above except for 61,000 outstanding performance stock awards for which the performance criteria were not attained at that time. For the three months ended March 31, 2012, the EPS calculations above include the dilutive effects of all then outstanding options, restricted stock, and performance awards except for 69,000 outstanding performance stock awards for which the performance criteria were not attained at that time.