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Stockholders' Equity Matters (Tables)
 3 Months Ended
Mar. 31, 2014
Stockholders' Equity Matters  
Schedule of dividend declared and payments

 

 

  Declaration
Date		   Dividend
Per Share		   Record
Date		   Total
Amount		   Payment
Date		    
  March 14, 2013   $ 0.2700   March 25, 2013   $ 51,460   April 15, 2013    
  June 6, 2013     0.2700   June 25, 2013     51,597   July 15, 2013    
  September 11, 2013     0.2700   September 25, 2013     51,625   October 15, 2013    
  December 16, 2013     0.2700   December 27, 2013     51,683   January 15, 2014    
  March 14, 2014     0.2700   March 25, 2014     51,812   April 15, 2014