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Earnings Per Share (Tables)
3 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Calculation of Weighted Average Common Shares Outstanding used in Computation of Diluted Earnings Per Share
The following table summarizes the calculation of weighted average common shares outstanding used in the computation of diluted earnings per share, for the three-month periods ended March 31, 2013 and 2012 (in thousands):
 
Three Months Ended March 31,
 
2013
 
2012
Weighted average basic common shares outstanding
477,826

 
400,597

Effect of dilutive securities
 
 
 
Restricted stock

 

Convertible preferred stock

 

Weighted average diluted common and potential common shares outstanding
477,826

 
400,597