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Earnings Per Share
 12 Months Ended
Dec. 31, 2012
Earnings Per Share [Abstract]  
Earnings Per Share
EARNINGS PER SHARE
A reconciliation of the weighted average common shares outstanding used in the basic and diluted earnings per weighted average common share (EPS) calculation was as follows (in thousands):
 
2012
 
2011
 
2010
Weighted average common shares outstanding:
 
 
 
 
 
Basic EPS calculation
110,753

 
110,626

 
110,442

Effect of dilutive share-based awards
15

 
52

 
79

Diluted EPS calculation
110,768

 
110,678

 
110,521



For 2012, 2011 and 2010, there were no potentially dilutive securities excluded from the calculation of diluted EPS.