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Earnings Per Share
 3 Months Ended
Mar. 31, 2015
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
 
A reconciliation between basic and diluted earnings per share is as follows (in thousands, except per share data):
 
 
Quarter Ended March 31,
 
2015
 
2014
Net income for basic and diluted earnings per share
$
45,230

 
$
26,457

Weighted-average common shares outstanding
219,626

 
221,295

Dilutive effect of stock options, performance share awards and restricted stock awards
1,216

 
1,376

Diluted weighted-average shares outstanding
220,842

 
222,671

Basic earnings per share
$
0.21

 
$
0.12

Diluted earnings per share
$
0.20

 
$
0.12


 
Diluted earnings per share does not reflect options to purchase an aggregate of 6,000 shares for the quarter ended March 31, 2014 because the effect of including them would have been antidilutive. There were no antidilutive shares for the quarter ended March 31, 2015.