Note 3 - Property Acquisitions, Developments and Other Investments (Details) - Acquisition of Operating Properties (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash	$ 367,752		$ 455,280
Purchase Price - Debt Assumed	279,123		179,198
Purchase Price - Total	724,468		634,478
GLA	4,057	[1]	3,086	[1]
Woodbridge S.C. [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			9,000
Purchase Price - Total			9,000
GLA			97	[1]
Bell Camino Center [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			4,185
Purchase Price - Debt Assumed			4,210
Purchase Price - Total			8,395
GLA			63	[1]
Various 31 Parcels [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			30,753	[2]
Purchase Price - Total			30,753	[2]
GLA			83	[1],[2]
Duncan, SC 1 Parcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			1,048	[3]
Purchase Price - Total			1,048	[3]
GLA			3	[1],[3]
Olympia West Outparcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			1,200
Purchase Price - Total			1,200
GLA			6	[1]
Frontier Village [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			12,231	[4]
Purchase Price - Debt Assumed			30,900	[4]
Purchase Price - Total			43,131	[4]
GLA			195	[1],[4]
Silverdale S.C. [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			8,335	[4]
Purchase Price - Debt Assumed			24,000	[4]
Purchase Price - Total			32,335	[4]
GLA			170	[1],[4]
Various 30 Parcels [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			39,493	[2]
Purchase Price - Total			39,493	[2]
GLA			107	[1],[2]
Peru, IL 1 Parcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			995	[3]
Purchase Price - Total			995	[3]
GLA			4	[1],[3]
Towson Place [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			69,375	[5]
Purchase Price - Debt Assumed			57,625	[5]
Purchase Price - Total			127,000	[5]
GLA			680	[1],[5]
Prien Lake Outparcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			1,800
Purchase Price - Total			1,800
GLA			8	[1]
Devon Village [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			28,550
Purchase Price - Total			28,550
GLA			79	[1]
Various, NC 4 Properties [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			63,750
Purchase Price - Total			63,750
GLA			368	[1]
Lake Jackson [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			5,500	[6]
Purchase Price - Total			5,500	[6]
GLA			35	[1],[6]
Woodlawn S.C. [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			7,050
Purchase Price - Total			7,050
GLA			137	[1]
Columbia Crossing - 2 Outparcels [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			11,060
Purchase Price - Total			11,060
GLA			69	[1]
Pompano Beach [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			12,180	[7]
Purchase Price - Total			12,180	[7]
GLA			81	[1],[7]
Various 6 Parcels [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			8,111	[2]
Purchase Price - Total			8,111	[2]
GLA			19	[1],[2]
Wilton S.C. [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			18,800
Purchase Price - Debt Assumed			20,900
Purchase Price - Total			39,700
GLA			96	[1]
Hawthorne Hills S. C. [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			15,974
Purchase Price - Debt Assumed			21,563
Purchase Price - Total			37,537
GLA			193	[1]
Greeley Shopping Center [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			23,250	[8]
Purchase Price - Total			23,250	[8]
GLA			139	[1],[8]
Savi Ranch Center Phase II [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			34,500
Purchase Price - Total			34,500
GLA			161	[1]
Wild Lake Plaza Outparcel [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			300
Purchase Price - Total			300
GLA			75	[1]
City Heights Retail Village [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			15,600
Purchase Price - Debt Assumed			20,000
Purchase Price - Total			35,600
GLA			109	[1]
Snowden Square [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			6,182	[9]
Purchase Price - Total			6,182	[9]
GLA			50	[1],[9]
“Key Food” Portfolio (5 Properties) [Member]
Significant Acquisitions and Disposals [Line Items]
Purchase Price - Cash			26,058
Purchase Price - Total			$ 26,058
GLA			59	[1]

[1] Gross leasable area ("GLA")

[2] Acquired an aggregate of 67 parcels net leased to restaurants through a consolidated joint venture, in which the Company has a 99.1% controlling interest. During July 2012, the Company purchased the remaining 0.9% interest for $0.7 million.

[3] Acquired an aggregate of two parcels net leased to restaurants through a consolidated joint venture, in which the Company has a 92.0% controlling interest. During July 2012, the Company sold 4% of its interest for $0.1 million. The Company continues to have a controlling interest in the joint venture and therefore continues to consolidate this investment.

[4] These properties were acquired from a joint venture in which the Company has a 15% noncontrolling interest. The Company evaluated these transactions pursuant to the FASB's Consolidation guidance and as such recognized an aggregate gain of $2.0 million from the fair value adjustment associated with its original ownership due to a change in control.

[5] 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.

[6] The Company acquired this property from a preferred equity investment in which the Company held a noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance. This transaction resulted in a change in control with no gain or loss recognized.

[7] This property was acquired from a joint venture in which the Company had a 50% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance. This transaction resulted in a change in control with no gain or loss recognized.

[8] This property was acquired 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 $0.4 million from the fair value adjustment associated with its original ownership due to a change in control.

[9] This property was acquired from a joint venture in which the Company has a 50% noncontrolling interest. The Company evaluated this transaction pursuant to the FASB's Consolidation guidance and as such recognized a gain of $1.0 million from the fair value adjustment associated with its original ownership due to a change in control.