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Basis of Presentation (Tables)
9 Months Ended
Sep. 30, 2013
Earnings Per Share [Abstract]  
Weighted average shares used in the basic and diluted net income per common share
The following is a reconciliation of the weighted average shares outstanding used in the basic and diluted net income per common share calculations for the periods indicated:
 
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
In thousands
 
2013
 
2012
 
2013
 
2012
Basic weighted average common shares outstanding
 
366,088

 
387,512

 
368,101

 
387,015

Potentially dilutive securities:
 
 

 
 

 
 

 
 

Restricted stock, stock options, SARs and performance-based equity awards
 
3,054

 
3,397

 
3,215

 
3,839

Diluted weighted average common shares outstanding
 
369,142

 
390,909

 
371,316

 
390,854