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Earnings Per Share
3 Months Ended
Mar. 31, 2014
Earnings Per Share [Abstract]  
Earnings Per Share
Earnings Per Share
The following is a reconciliation of the average shares outstanding used to compute basic and diluted earnings per share. 
 
Three Months Ended
March 31,
 
2014
 
2013
Basic weighted average common shares outstanding
134,187,169

 
132,306,735

Effect of dilutive securities
2,860,541

 
2,686,322

Diluted weighted average common shares outstanding
137,047,710

 
134,993,057


For the three months ended March 31, 2014 and March 31, 2013, 1.2 million and 2.7 million, respectively, of common shares issuable upon the exercise of stock options were anti-dilutive and were excluded from the calculation of diluted earnings per share.
No dividends were paid during each of the three months ended March 31, 2014 and March 31, 2013.