Note 2 - Operating Property Activities (Detail)	3 Months Ended		6 Months Ended		12 Months Ended											6 Months Ended				6 Months Ended		6 Months Ended
	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Jun. 30, 2012 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2011 USD ($)	Jun. 30, 2012 Operating Properties [Member] Dispositions [Member] Initial [Member]	Jun. 30, 2012 Outparcels [Member] Seller Financing [Member] Dispositions [Member] Additional [Member]	Jun. 30, 2012 Outparcels [Member] Dispositions [Member] Initial [Member]	Jun. 30, 2012 Outparcels [Member] Dispositions [Member] Additional [Member]	Jun. 30, 2012 Land Parcel [Member] Dispositions [Member] Additional [Member]	Jun. 30, 2012 Acquisitions [Member] Frontier Village and Silverdale S.C. [Member]	Jun. 30, 2012 Acquisitions [Member] Various [Member]	Jun. 30, 2012 Acquisitions [Member] Duncan, SC and Peru, IL [Member]	Jun. 30, 2012 Acquisitions [Member] Towson Place [Member]	Jun. 30, 2012 Acquisitions [Member]	Jun. 30, 2012 Previously Consolidated Joint Venture [Member] USD ($)	Jun. 30, 2012 Dispositions [Member] Initial [Member] USD ($)	Jun. 30, 2012 Dispositions [Member] Additional [Member] First 6 Months [Member]	Jun. 30, 2012 Dispositions [Member] Additional [Member] Remaining Term [Member]	Jun. 30, 2012 Dispositions [Member] Additional [Member] USD ($)	Jun. 30, 2012 Deferred [Member] Additional III [Member] USD ($)	Jun. 30, 2012 Impairment of Property Carrying Value [Member] USD ($)	Jun. 30, 2012 Initial [Member] USD ($)	Jun. 30, 2012 Additional [Member] USD ($)	Jun. 30, 2012 Additional II [Member] USD ($)	Jun. 30, 2012 Additional II [Member] MXN	Jun. 30, 2012 Additional III [Member] USD ($)	Jun. 30, 2012 Frontier Village and Silverdale S.C. [Member] USD ($)	Jun. 30, 2012 Towson Place [Member] USD ($)	Apr. 30, 2012 Towson Place [Member] USD ($)		Jun. 30, 2012 FNC Realty Corporation [Member] USD ($)
Equity Method Investment, Ownership Percentage	20.00%		20.00%								15.00%			30.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain																												$ 2,000,000	$ 12,100,000
Number of Real Estate Properties	29		29		690	23	1	2	1	4		61	2		4							4
Noncontrolling Interest, Ownership Percentage by Parent												99.10%	92.00%																			72.17%
Income (Loss) from Equity Method Investments			79,246,000	30,169,000	30,200,000																								1,100,000
Noncash or Part Noncash Acquisition, Debt Assumed																													57,600,000
Business Acquisition, Cost of Acquired Entity, Purchase Price	387,450,000		387,450,000													2,200,000														127,000,000	[1]	3,400,000
Adjustments to Additional Paid in Capital, Other																1,200,000
Business Acquisition, Percentage of Voting Interests Acquired																																3.10%
Sales of Real Estate																							157,200,000	6,400,000	1,900,000	24,300,000	55,500,000
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	11,263,000	4,025,000	23,242,000	4,188,000																			23,200,000
Impairment of Real Estate			34,600,000	12,400,000													8,600,000			300,000		25,600,000
Land Sales																								1,800,000	400,000	5,700,000
Financing Receivable, Net																				1,750,000
Financing Receivable, Interest Rate																		6.50%	7.50%
Number of Months																				6
Gain (Loss) on Sale of Properties																											10,000,000
Deferred Gain on Sale of Property																					2,000,000
Real Estate Investment Property, at Cost																						54,300,000
Fair Value Of Real Estate	$ 28,694,000		$ 28,694,000		$ 5,289,000																	$ 28,700,000

[1] This property was acquired from a joint venture in which the Company had a 30% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as such recognized a gain of $12.1 million from the fair value adjustment associated with its original ownership due to a change in control. In addition, the Company recognized promote income of $1.1 million in connection with this transaction. The gain and promote income are included in Equity in income of joint ventures, net on the Company's Condensed Consolidated Statements of Income. Additionally, the debt assumed in connection with this transaction of $57.6 million was repaid in May 2012.