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CONSOLIDATED STATEMENT OF EQUITY (USD $)
In Thousands
Total
Preferred Shares [Member]
Common Shares [Member]
Paid-in Capital [Member]
Accumulated Distributions in Excess of Net Income (Loss) [Member]
Deferred Compensation Obligation [Member]
Accumulated Other Comprehensive Income (Loss) [Member]
Treasury Stock at Cost [Member]
Non-Controlling Interests [Member]
Balance at Dec. 31, 2012 $ 3,366,460 $ 405,000 $ 31,524 $ 4,629,257 $ (1,694,822) $ 15,556 $ (27,925) $ (16,452) $ 24,322
Issuance of common shares related to stock plans 242   3 125       114  
Issuance of common shares for cash offering 39,374   220 37,917       1,237  
Issuance of restricted stock 0     (3,118)   44   3,074  
Vesting of restricted stock 427     2,913   (68)   (2,418)  
Stock-based compensation 1,048     1,048          
Contributions from non-controlling interests 94               94
Distributions to non-controlling interests (277)               (277)
Dividends declared-common shares (42,784)       (42,784)        
Dividends declared-preferred shares (7,030)       (7,030)        
Comprehensive income 10,033       6,303   3,789   (59)
Balance at Mar. 31, 2013 $ 3,367,587 $ 405,000 $ 31,747 $ 4,668,142 $ (1,738,333) $ 15,532 $ (24,136) $ (14,445) $ 24,080