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Earnings Per Share
 3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share

Basic earnings per share is calculated as net income attributable to HollyFrontier stockholders divided by the average number of shares of common stock outstanding. Diluted earnings per share assumes, when dilutive, the issuance of the net incremental shares from restricted shares and performance share units. The following is a reconciliation of the components of the basic and diluted per share computations for net income attributable to HollyFrontier stockholders:
 
 
Three Months Ended March 31,
 
 
2014
 
2013
 
 
(In thousands, except per share data)
Net income attributable to HollyFrontier stockholders
 
$
152,061

 
$
333,669

Participating securities' share in earnings
 
466

 
1,294

Net income attributable to common shares
 
$
151,595

 
$
332,375

Average number of shares of common stock outstanding
 
198,297

 
202,726

Effect of dilutive variable restricted shares and performance share units (1)
 
627

 
702

Average number of shares of common stock outstanding assuming dilution
 
198,924

 
203,428

Basic earnings per share
 
$
0.76

 
$
1.64

Diluted earnings per share
 
$
0.76

 
$
1.63

(1) Excludes anti-dilutive restricted and performance share units of:
 
14

 
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