Note 2 - Operating Property Activities (Details) - Acquisition of Operating Properties (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	$ 450,574	[1]
Purchase Price Debt Assumed	584,111
Purchase Price Other	147,787
Purchase Price Total	1,182,472
Purchase Price GLA	5,361	[2],[3]
North Valley Leasehold [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	3,000	[1]
Purchase Price Total	3,000
Purchase Price GLA		[3]
LaSalle Properties [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	62,239	[1],[4]
Purchase Price Debt Assumed	23,269	[4]
Purchase Price Other	7,642	[4]
Purchase Price Total	93,150	[4]
Purchase Price GLA	316	[3],[4]
Harrisburg Land Parcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	2,550	[1]
Purchase Price Total	2,550
Purchase Price GLA		[3]
Crossroads Plaza [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	18,691	[1]
Purchase Price Debt Assumed	72,309
Purchase Price Total	91,000
Purchase Price GLA	489	[3]
Quail Corners [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	9,398	[1],[5]
Purchase Price Debt Assumed	17,409	[5]
Purchase Price Other	4,943	[5]
Purchase Price Total	31,750	[5]
Purchase Price GLA	110	[3],[5]
KIF [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	128,699	[1],[2]
Purchase Price Debt Assumed	157,010	[2]
Purchase Price Other	122,291	[2]
Purchase Price Total	408,000	[2]
Purchase Price GLA	1,589	[2],[3]
Fountain at Arbor Lakes [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	900	[1]
Purchase Price Total	900
Purchase Price GLA		[3]
Boston Portfolio [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	149,486	[1]
Purchase Price Debt Assumed	120,514
Purchase Price Total	270,000
Purchase Price GLA	1,426	[3]
Vinnin Square [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	2,550	[1]
Purchase Price Total	2,550
Purchase Price GLA	6	[3]
SEB [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	69,261	[1],[6]
Purchase Price Debt Assumed	193,600	[6]
Purchase Price Other	12,911	[6]
Purchase Price Total	275,772	[6]
Purchase Price GLA	1,415	[3],[6]
Highlands Ranch Parcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price Cash	3,800	[1]
Purchase Price Total	$ 3,800
Purchase Price GLA	10	[3]

[1] Includes 1031 sales proceeds

[2] The Company acquired from its partners the remaining ownership interest in a joint venture which holds 12 encumbered properties for which the Company had a 39.1% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as a result, recognized a gain of $65.6 million from the fair value adjustment associated with the Company's original ownership due to a change in control, which is reflected in the purchase price above in Other. Subsequently, the Company repaid $128.4 million in debt encumbering ten of the properties. Additionally, during June 2014, the Company sold one of the properties to a third party.

[3] Gross leasable area ("GLA")

[4] The Company acquired three properties from a joint venture in which the Company has an 11% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as such recognized a gain of $3.7 million from the fair value adjustment associated with the Company's original ownership due to a change in control, which is reflected in the purchase price above in Other.

[5] The Company acquired a 65.4% controlling ownership interest in this property and the seller retained a 34.6% noncontrolling interest in the property. The partner has the ability to put its partnership interest to the Company. As such, the Company has recorded the partners' share of the property's fair value of $4.9 million as Redeemable noncontrolling interests on the Company's Condensed Consolidated Balance Sheets.

[6] The Company acquired from its partner the remaining ownership interest in 10 properties that were held in a joint venture in which the Company has a 15% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as a result, recognized a gain of $14.4 million from the fair value adjustment associated with the Company's original ownership due to a change in control, which is reflected in the purchase price above in Other.