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Investments in and Advances to Unconsolidated Affiliates - Fund Investments - Additional Information (Details) - USD ($) $ in Thousands |  |  |  | 9 Months Ended |
--- | --- | --- | --- | --- | ---
Sep. 25, 2024 | Jun. 28, 2024 | May 16, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 19, 2024
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Proceeds from the disposition of properties and other investments, net |  |  |  | $ 58,670 | $ 0 |
Venture Capital Gain (Loss), Net | $ 12,900 | $ 8,500 |  |  |  |
Shops at Grand - Queens, NY |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Sale Price |  |  | $ 48,300 |  |  |
Percentage of voting interests acquired |  |  | 5.00% |  |  |
Investment Owned, Fair Value |  |  | $ 2,400 |  |  |
Fund IV |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Venture Capital Gain (Loss), Net |  | 4,100 |  |  |  |
Share of the gain based on ownership |  | 1,000 |  |  |  |
Fund V |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage | 90.00% |  |  |  |  |
Venture Capital Gain (Loss), Net | $ 11,600 |  |  |  |  |
Share of the gain based on ownership | $ 2,300 |  |  |  |  |
Gotham Plaza |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Purchase Price |  |  |  |  |  | $ 17,100
Mortgage loan |  |  |  |  |  | $ 28,000
Interest rate |  |  |  |  |  | 5.90%
Paramus Plaza |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Proceeds from the disposition of properties and other investments, net |  | 36,800 |  |  |  |
Repayment related to mortgage |  | $ 27,900 |  |  |  |
Frederick Crossing |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage | 90.00% |  |  |  |  |
Proceeds from the disposition of properties and other investments, net | $ 47,200 |  |  |  |  |
Repayment related to mortgage | $ 23,200 |  |  |  |  |
Shops at Grand - Queens, NY |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Equity method investment, ownership percentage |  |  | 95.00% |  |  |

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