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EARNINGS PER SHARE
 6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
EARNINGS PER SHARE
EARNINGS PER SHARE
 
The following is a reconciliation of basic and diluted earnings per share computations (in thousands except for per share amounts):
 
 
Three Months Ended
 
Six Months Ended
 
 
June 30,
 
June 30,
 
 
2012
 
2011
 
2012
 
2011
Numerator for basic and diluted earnings per share:
 
 

 
 

 
 

 
 

Net Income
 
$
23,426

 
$
29,156

 
$
55,441

 
$
51,886

 
 
 
 
 
 
 
 
 
Denominator:
 
 

 
 

 
 

 
 

Basic shares outstanding
 
53,308

 
52,939

 
53,268

 
52,869

Dilutive effect of equity-based compensation awards
 
197

 
423

 
229

 
392

Dilutive shares outstanding
 
53,505

 
53,362

 
53,497

 
53,261

 
 
 
 
 
 
 
 
 
Basic earnings per share:
 
$
0.44

 
$
0.55

 
$
1.04

 
$
0.98

 
 
 

 
 

 
 

 
 

Diluted earnings per share:
 
$
0.44

 
$
0.55

 
$
1.04

 
$
0.97



For the three- and six-month periods ended June 30, 2012, the dilutive effect of all then outstanding options, restricted stock and performance awards is included in the above calculations except for 65 thousand outstanding performance stock awards for which the performance criteria were not attained at that time. For the three- and six-month periods ended June 30, 2011, the above calculations include the dilutive effects of all then outstanding options, restricted stock, and performance awards except for 70 thousand outstanding performance stock awards for which the performance criteria were not attained at that time.