Note 2 - Basis of Presentation, Consolidation, Investments in Joint Ventures, and Noncontrolling Interests (Details) - Redeemable Noncontrolling Interests (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Redeemable Noncontrolling Interest [Line Items]
Net income (loss) allocable to redeemable noncontrolling interests	$ 139		$ 25
Distributions declared to redeemable noncontrolling interests	(26)		(29)
Other comprehensive (loss) income allocable to redeemable noncontrolling interests 1	(35)	[1]	53	[1]
Redeemable Noncontrolling Interests [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable noncontrolling interests balance	43,928		37,670
Net income (loss) allocable to redeemable noncontrolling interests	112		(7)
Distributions declared to redeemable noncontrolling interests	(432)		(381)
Other comprehensive (loss) income allocable to redeemable noncontrolling interests 1	(35)	[1]	53	[1]
Exchange of redeemable noncontrolling interest for common stock	(44)		(20)
Adjustment to redeemable noncontrolling interests - Operating Partnership and other	(3,678)		8,677
Redeemable noncontrolling interests balance	$ 39,851		$ 45,992

[1] Represents the noncontrolling interests' share of the changes in the fair value of derivative instruments accounted for as cash flow hedges (see Note 6).