Note 14 - Supplemental Schedule of Non-Cash Investing / Financing Activities (Detail) - Non-Cash Investing And Financing Activities (USD $) In Thousands	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Acquisition of real estate interests by assumption of mortgage debt	$ 24,718	$ 13,170
Issuance of common stock	4,940	5,070
Surrender of common stock	(244)	(644)
Consolidation of Joint Ventures:
Increase in real estate and other assets		97,643
Increase in mortgage payables		83,212
Declaration of dividends paid in succeeding period	88,093	76,775
Non Cash [Member]
Surrender of common stock	$ (244)	$ (643)