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Investments in Real Estate Partnerships - Schedule of Acquisitions by Real Estate Partnerships (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |
Ownership Percentage | 0.00% | 0.00%
Purchase Price |  | $ 287,527
Off-Market Lease, Unfavorable [Member] |  |
Business Acquisition [Line Items] |  |
Intangible Assets |  | 7,153
Off-Market Favorable Lease [Member] |  |
Business Acquisition [Line Items] |  |
Intangible Assets |  | $ 21,649
Unconsolidated Properties [Member] | Eastfield at Baybrook [Member] |  |
Business Acquisition [Line Items] |  |
Date Purchased | Nov. 13, 2020 |
Property Name | Eastfield at Baybrook |
City/State | Houston, TX |
Business Acquisition, Description of Acquired Entity | Development |
Business Acquisition, Co-investment Partner | Other |
Ownership Percentage | 50.00% |
Purchase Price | $ 4,491 |

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