Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)
In Thousands, except Share data
Total
Common Stock
Capital in Excess of Par Value
Accumulated Distributions in Excess of Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2010 $ 1,560,375 $ 2,093 $ 1,878,118 $ (332,547) $ 12,711
Beginning balance, shares at Dec. 31, 2010   209,317,346      
Issuance of common stock, shares   3,720,351      
Issuance of common stock 29,947 37 29,910    
Distributions (64,912)     (64,912)  
Redemptions of common stock, shares   (3,067,175)      
Redemptions of common stock (24,120) (30) (24,090)    
Redeemable common stock (273)   (273)    
Comprehensive income:          
Net income 31,662     31,662  
Unrealized loss on marketable securities (1,713)       (1,713)
Reclassification of previous unrealized gain on marketable securities into net income (14,654)       (14,654)
Unrealized loss on interest rate swaps (697)       (697)
Total comprehensive income 14,598        
Ending Balance at Jun. 30, 2011 $ 1,515,615 $ 2,100 $ 1,883,665 $ (365,797) $ (4,353)
Ending Balance, shares at Jun. 30, 2011   209,970,522     Â