Real Estate Investments Business Acquisitions (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Business Acquisition [Line Items]
Purchase Price		$ 287,527
Off-Market Favorable Lease [Member]
Business Acquisition [Line Items]
Intangible Assets		21,649
Off-Market Lease, Unfavorable [Member]
Business Acquisition [Line Items]
Intangible Assets		$ 7,153
Country Walk Plaza [Member]
Business Acquisition [Line Items]
Date Purchased	Jan. 01, 2020
Property Name	Country Walk Plaza (1)
City/State	Miami, FL
Ownership	100.00%
Purchase Price	$ 39,625
Debt Assumed, Net of Premiums	16,359
Country Walk Plaza [Member] \| Off-Market Favorable Lease [Member]
Business Acquisition [Line Items]
Intangible Assets	3,294
Country Walk Plaza [Member] \| Off-Market Lease, Unfavorable [Member]
Business Acquisition [Line Items]
Intangible Assets	$ 2,452
Pablo Plaza [Member]
Business Acquisition [Line Items]
Date Purchased		Jan. 08, 2019
Property Name		Pablo Plaza (1)
City/State		Jacksonville, FL
Ownership		100.00%
Purchase Price		$ 600
Melrose Market [Member]
Business Acquisition [Line Items]
Date Purchased		Feb. 08, 2019
Property Name		Melrose Market
City/State		Seattle, WA
Ownership		100.00%
Purchase Price		$ 15,515
Melrose Market [Member] \| Off-Market Favorable Lease [Member]
Business Acquisition [Line Items]
Intangible Assets		941
Melrose Market [Member] \| Off-Market Lease, Unfavorable [Member]
Business Acquisition [Line Items]
Intangible Assets		$ 358
The Field At Commonwealth PhII [Member]
Business Acquisition [Line Items]
Date Purchased		Jun. 18, 2019
Property Name		The Field at Commonwealth Ph II (2)
City/State		Chantilly, VA
Ownership		100.00%
Purchase Price		$ 4,083
Culver Public Market [Member]
Business Acquisition [Line Items]
Date Purchased		Jun. 21, 2019
Property Name		Culver Public Market
City/State		Culver City, CA
Ownership		100.00%
Purchase Price		$ 1,279
6401 Roosevelt [Member]
Business Acquisition [Line Items]
Date Purchased		Jun. 28, 2019
Property Name		6401 Roosevelt
City/State		Seattle, WA
Ownership		100.00%
Purchase Price		$ 3,550
The Pruneyard Shopping Center [Member]
Business Acquisition [Line Items]
Date Purchased		Jul. 01, 2019
Property Name		The Pruneyard Shopping Center
City/State		Campbell, CA
Ownership		100.00%
Purchase Price		$ 212,500
The Pruneyard Shopping Center [Member] \| Off-Market Favorable Lease [Member]
Business Acquisition [Line Items]
Intangible Assets		16,991
The Pruneyard Shopping Center [Member] \| Off-Market Lease, Unfavorable [Member]
Business Acquisition [Line Items]
Intangible Assets		$ 5,833
Circle Marina Center [Member]
Business Acquisition [Line Items]
Date Purchased		Sep. 17, 2019
Property Name		Circle Marina Center
City/State		Long Beach, CA
Ownership		100.00%
Purchase Price		$ 50,000
Circle Marina Center [Member] \| Off-Market Favorable Lease [Member]
Business Acquisition [Line Items]
Intangible Assets		3,717
Circle Marina Center [Member] \| Off-Market Lease, Unfavorable [Member]
Business Acquisition [Line Items]
Intangible Assets		$ 962

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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