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Selected Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2012
Selected Quarterly Financial Data (Unaudited)  
Selected Quarterly Financial Data (Unaudited)

 

 
   2012  
 
   First
Quarter		   Second
Quarter		   Third
Quarter		   Fourth
Quarter		  

Revenues

   $ 301,420   $ 343,183   $ 330,068   $ 322,311  

Net income

     42,948     37,686     44,658     26,631  

Net income available for common shareholders

     28,816     26,964     29,480     18,534  

Net income available for common shareholders per share

     0.23     0.22     0.24     0.15  

Distributions per common share(1)

     0.45     0.45     0.45     0.47  

 

 
   2011  
 
   First
Quarter		   Second
Quarter		   Third
Quarter		   Fourth
Quarter		  

Revenues

   $ 281,984   $ 313,809   $ 318,689   $ 295,851  

Net income

     53,048     51,643     47,531     38,218  

Net income available for common shareholders(1)

     45,578     44,173     40,061     30,748  

Net income available for common shareholders per share

     0.37     0.36     0.32     0.25  

Distributions per common share(2)

     0.45     0.45     0.45     0.45  
(1)
The sum of per common share amounts for the four quarters differs from annual per share amounts due to the required method of computing weighted average number of shares in interim periods and rounding.

(2)
Amounts represent distributions paid in the periods shown.