Note 4 - Property Acquisitions, Developments and Other Investments (Detail) - Acquisition of Operating Properties (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Cash/Net Assets and Liabilities	$ 256,652	$ 112,537
Debt Assumed	117,912	138,768
Total	374,564	251,305
GLA	2,488,000.0	1,725.0
Foothills Mall [Member]
Cash/Net Assets and Liabilities		9,063	[1]
Debt Assumed		77,162	[1]
Total		86,225	[1]
GLA		515.0	[1]
Kenneth Hahn [Member]
Cash/Net Assets and Liabilities		8,563	[2]
Debt Assumed			[2]
Total		8,563	[2]
GLA		165.0	[2]
Wexford [Member]
Cash/Net Assets and Liabilities		1,657	[3]
Debt Assumed		12,500	[3]
Total		14,157	[3]
GLA		142.0	[3]
Riverplace [Member]
Cash/Net Assets and Liabilities		35,560
Total		35,560
GLA		257.0
Cave Springs [Member]
Cash/Net Assets and Liabilities		510	[4]
Debt Assumed			[4]
Total		510	[4]
GLA			[4]
Woodruff Shopping Center [Member]
Cash/Net Assets and Liabilities		18,380
Total		18,380
GLA		116.0
Haverhill Plaza [Member]
Cash/Net Assets and Liabilities		3,307	[5]
Debt Assumed		7,099	[5]
Total		10,406	[5]
GLA		63	[5]
Midtown Commons [Member]
Cash/Net Assets and Liabilities		23,840
Total		23,840
GLA		137.0
Chevron Parcel [Member]
Cash/Net Assets and Liabilities		1,700	[4]
Debt Assumed			[4]
Total		1,700	[4]
GLA		2	[4]
Dunhill [Member]
Cash/Net Assets and Liabilities		9,957	[6]
Debt Assumed		42,007	[6]
Total		$ 51,964	[6]
GLA		328.0	[6]

[1] The Company acquired this property from a preferred equity investment in which the Company held a noncontrolling interest. There was no gain or loss recognized in connection with this change in control. The $77.2 million of assumed debt includes a decrease of approximately $3.8 million associated with a fair value debt adjustment relating to the property's purchase price allocation. During August 2010, the Company sold all of its interest in this property, see disposition discussion below.

[2] The Company acquired this property through the purchase of an additional ownership interest in a joint venture in which the Company had previously held an 11.25% noncontrolling ownership interest. As a result of this transaction the Company now holds a 75% controlling interest and consolidates this entity. There was no gain or loss recognized in connection with this change in control.

[3] The Company acquired this property from a joint venture in which the Company holds a 15% noncontrolling ownership interest. The debt assumed is a non-recourse mortgage which bears interest at a rate of 5.54% and is scheduled to mature in 2016. The mortgage also provides the lender with 50% of the excess cash flow, if any, up to $8.7 million after the Company receives its invested capital plus a stated return. There was no gain or loss recognized in connection with this change in control.

[4] The Company purchased these adjacent land parcels next to existing properties that the Company currently owns.

[5] The Company took over control of this property from a preferred equity investment in which the Company held a noncontrolling interest and therefore now consolidates this entity. There was no gain or loss recognized in connection with this change in control.

[6] The Company acquired these properties from three preferred equity investments in which the Company held noncontrolling interests. The $42.0 million of assumed debt includes a decrease of approximately $0.6 million associated with a fair value debt adjustment relating to the property's purchase price allocation. There were no gains or losses recognized in connection with these changes in control.