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Note 18 - Supplemental Schedule of Non-Cash Investing/Financing Activities (Detail) - Non-Cash Investing and Financing Activities (USD $)
In Thousands, unless otherwise specified
1 Months Ended 12 Months Ended
Oct. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Acquisition of real estate interests by assumption of mortgage debt   $ 179,198 $ 117,912 $ 670
Disposition of real estate interest by assignment of debt 617,000 17,083   81,000
Issuance of common stock   18,115 4,940 5,070
Disposition of real estate through the issuance of loan receivables   13,475 14,297 975
Investment in real estate joint venture by contribution of properties and assignment of debt       149,034
Declaration of dividends paid in succeeding period   96,518 92,159 89,037
Increase in real estate and other assets       174,327
Increase in mortgage payable       144,803
Non-cash [Member]
       
Surrender of common stock   $ (2,073) $ (596) $ (840)