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Real Estate Investments Business Acquisitions (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 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
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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