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Investments in and Advances to Unconsolidated Affiliates - Schedule of Investments (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Aug. 08, 2019
--- | --- | --- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |  |  |
Due from (to) Related Parties | $ 666 | $ 363 |  |
Other | 3,811 | 1,881 |  |
Investments in and advances to unconsolidated affiliates | 322,326 | 272,829 |  |
Distributions in excess of income from, and investments in, unconsolidated affiliates | $ 9,939 | 15,616 |  |
KLA/ABS |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Cost method investment, ownership percentage | 36.70% |  |  |
Cost Method Investment | $ 124,316 | 72,391 |  |
Self Storage Management |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 95.00% |  |  |
Equity method investments | $ 207 | 207 |  |
640 Broadway |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 63.13% |  |  |
Equity method investments | $ 17,825 | 17,457 |  |
Fund III |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments | $ 18,032 | 17,664 |  |
Fund IV Other Portfolio |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 98.57% |  |  |
Equity method investments | $ 12,675 | 11,719 |  |
650 Bald Hill Road |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 90.00% |  |  |
Equity method investments | $ 11,677 | 12,550 |  |
Paramus Plaza |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 50.00% |  |  |
Equity method investments | $ 1,975 | 5,565 |  |
Fund IV |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments | $ 26,327 | 29,834 |  |
Fund V Family Center at Riverdale |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 89.42% |  |  |
Equity method investments | $ 12,449 | 11,824 |  |
Tri City Plaza |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 90.00% |  |  |
Equity method investments | $ 6,827 | 7,024 |  |
Frederick County Acquisitions |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 90.00% |  |  |
Equity method investments | $ 10,748 | 10,837 |  |
Fund V |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments | 30,024 | 29,685 |  |
Core Portfolio |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investments | 119,150 | 121,011 | $ 200 | $ 1,800
Other | $ 3,700 |  |  |
Core Portfolio | 840 N. Michigan |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 88.43% |  |  |
Equity method investments | $ 51,513 | 55,863 |  |
Core Portfolio | Renaissance Portfolio |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 20.00% |  |  |
Equity method investments | $ 28,466 | 29,270 |  |
Core Portfolio | Gotham Plaza |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 49.00% |  |  |
Equity method investments | $ 29,187 | 28,683 |  |
Core Portfolio | Georgetown Portfolio |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 50.00% |  |  |
Equity method investments | $ 4,089 | 4,624 |  |
Core Portfolio | 1238 Wisconsin Avenue |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 80.00% |  |  |
Equity method investments | $ 5,895 | 2,571 |  |
Core Portfolio | Crossroads |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Equity method investment, ownership percentage | 49.00% |  |  |
Distributions in excess of income from, and investments in, unconsolidated affiliates | $ 9,939 | $ 15,616 |  |

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