Note 4 - Property Acquisitions, Developments and Other Investments (Detail)	1 Months Ended	12 Months Ended																	12 Months Ended							12 Months Ended		12 Months Ended			12 Months Ended
	Jul. 31, 2012 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Dec. 31, 2012 Kimsouth [Member] USD ($)	Dec. 31, 2011 Kimsouth [Member] USD ($)	Dec. 31, 2012 FNC Realty Corporation [Member] USD ($)	Dec. 31, 2011 FNC Realty Corporation [Member] USD ($)	Dec. 31, 2012 Operating Properties [Member]	Dec. 31, 2012 Leased Parcels [Member]	Dec. 31, 2012 Outparcel [Member]	Dec. 31, 2012 Land Parcels [Member] Consolidated Joint Venture, in which the Company Has a 99.1% Controlling Interest [Member]	Dec. 31, 2012 Land Parcels [Member] Consolidated Joint Venture, in which the Company has a 92.0% Controlling Interest [Member]	Dec. 31, 2012 Corporate Joint Venture [Member]	Dec. 31, 2012 Consolidated Joint Venture, in which the Company Has a 99.1% Controlling Interest [Member]	Dec. 31, 2012 Consolidated Joint Venture, in which the Company has a 92.0% Controlling Interest [Member]	Dec. 31, 2012 Joint Venture in which the Company had a 30% Noncontrolling Interest [Member]	Dec. 31, 2012 Joint Venture in which the Company had a 50% Noncontrolling Interest [Member]	Dec. 31, 2012 Joint Venture in which the Company has an 11% Noncontrolling Interest [Member] USD ($)	Dec. 31, 2012 Joint Venture in which the Company has a 50% Noncontrolling Interest [Member] USD ($)	Dec. 31, 2012 United States [Member] Ground Up Developments [Member]	Dec. 31, 2012 Peru [Member] Ground Up Developments [Member]	Dec. 31, 2012 Peru [Member] USD ($)	Dec. 31, 2012 Peru [Member] PEN	Dec. 31, 2012 Ground Up Developments [Member]	Dec. 31, 2012 Frontier Village and Silverdale S.C. [Member] USD ($)	Jul. 31, 2012 Consolidated Joint Venture, in which the Company Has a 99.1% Controlling Interest [Member] USD ($)	Dec. 31, 2012 Towson Place [Member] USD ($)		Dec. 31, 2011 Operating Properties [Member]	Dec. 31, 2011 University Town Center [Member] USD ($)		Dec. 31, 2012 Separate Consolidated Joint Ventures [Member] USD ($)	Dec. 31, 2011 Separate Consolidated Joint Ventures [Member] USD ($)	Dec. 31, 2012 FNC Realty Corporation [Member] USD ($)
Number of Real Estate Properties		28							24	69	5	67	2								2	1			3					19
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners					13.40%									15.00%			30.00%	50.00%	11.00%	50.00%											13.40%
Business Combination, Step Acquisition, Equity Interest in Acquiree, Remeasurement Gain (in Dollars)		$ 15,555,000	$ 569,000																$ 400,000	$ 1,000,000						$ 2,000,000		$ 12,100,000			$ 600,000
Noncontrolling Interest, Ownership Percentage by Parent								69.08%							99.10%	92.00%							95.00%	95.00%											82.70%
Business Acquisition, Percentage of Voting Interests Acquired		50.00%						12.48%																			0.90%								13.62%
Business Acquisition, Cost of Acquired Entity, Purchase Price (in Nuevos Soles and Dollars)		634,478,000	374,564,000																				2,500,000	6,800,000			700,000	127,000,000	[1]		17,750,000	[2]			15,300,000
Business Disposition, Percentage of Voting Interests Sold	4.00%
Proceeds from Divestiture of Businesses (in Dollars)	100,000
Promote Income (in Dollars)																												1,100,000
Noncash or Part Noncash Acquisition, Debt Assumed (in Dollars)		23,400,000																										57,600,000
Payments to Acquire Additional Interest in Subsidiaries (in Dollars)		12,000,000	200,000																															9,700,000
Number of Businesses Acquired																																		2
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests (in Dollars)		13,998,000	6,370,000	6,500,000				12,400,000																									10,400,000	13,000,000
Adjustments to Additional Paid in Capital, Reallocation of Noncontrolling Interest (in Dollars)		300,000	3,600,000				100,000	1,000,000
Distributed Earnings (in Dollars)					50,300,000	100,000,000
Proceeds from Distributions Received from Real Estate Partnerships (in Dollars)		$ 187,856,000	$ 63,529,000	$ 85,205,000	$ 6,900,000	$ 13,900,000

[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 promote income is included in Equity in income of joint ventures, net on the Company's Consolidated Statements of Income. Additionally, the debt assumed in connection with this transaction of $57.6 million was repaid in May 2012.

[2] This property was acquired from a joint venture in which the Company has a 13.4% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as such recorded a gain of $0.6 million from the fair value adjustment associated with its original 13.4% ownership due to a change in control.