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Investments in and Advances to Unconsolidated Affiliates - Fund Investments - Additional Information (Details) - USD ($) $ in Thousands, shares in Millions |  |  |  |  |  | 12 Months Ended |  |
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Oct. 25, 2024 | Sep. 25, 2024 | Jun. 28, 2024 | May 16, 2024 | Jan. 20, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Nov. 05, 2024 | Sep. 19, 2024
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross | [1],[2] |  |  |  |  |  | $ 1,547,947 | $ 1,881,087 |  |  |
Contingent payment |  |  |  |  |  |  | 5,400 | 0 |  |  |
Equity in earnings (losses) of unconsolidated affiliates |  |  |  |  |  |  | 15,178 | (7,677) | $ (32,907) |  |
Additional contingent payments |  |  |  |  |  |  |  | 17,500 |  |  |
Proceeds from dividends received |  |  |  |  |  |  | 500 | 29,100 | 1,800 |  |
Proceeds from the disposition of properties and other investments, net |  |  |  |  |  |  | 89,078 | $ 0 | $ 224,558 |  |
Venture Capital Gain (Loss), Net |  |  | $ 12,900 | $ 8,500 |  |  |  |  |  |  |
Mohawk Commons Venture |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  |  |  |  |  | 90.00% |  |  |
LINQ Promenade |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  |  | $ 41,600 |  |  |  |
Percentage of voting interests acquired |  |  |  |  |  |  | 15.00% |  |  |  |
Real estate investments, unconsolidated real estate and other joint ventures |  |  |  |  |  |  | $ 277,500 |  |  |  |
Mortgage loan |  |  |  |  |  |  | $ 175,000 |  |  |  |
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 |  |  |  |  |  |  |
Fund IV |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  |  | $ 21,900 |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  | 23.12% |  |  |  |
Loans payable |  |  |  |  |  |  |  | 24,100 |  |  |
Venture Capital Gain (Loss), Net |  |  |  | 4,100 |  |  |  |  |  |  |
Share of the gain based on ownership |  |  |  | $ 1,000 |  |  |  |  |  |  |
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 |  |  |  |  |  |  |  |
Georgetown Portfolio |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  |  | 160,000 |  |  |
Loans payable |  |  |  |  |  |  |  | 152,000 |  |  |
Debt instrument convertible carrying amount of the equity component |  |  |  |  |  |  |  | 1,400 |  |  |
Crossroads |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  |  |  |  |  | $ 58,100 |
Mortgage loan |  |  |  |  |  |  |  |  |  | $ 75,000 |
Crossroads | SOFR |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  | 3.83% |
Gotham Plaza |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  |  |  |  |  |  | $ 17,100
Mortgage loan |  |  |  |  |  |  |  |  |  |  | $ 28,000
Gotham Plaza | Base Rate |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  | 5.90%
Walk at Highwoods Preserve |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of voting interests acquired |  | 20.00% |  |  |  |  |  |  |  |  |
Investment Owned, Fair Value |  | $ 6,400 |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  | 80.00% |  |  |  |  |  |  |  |  |
Sale price |  | $ 31,400 |  |  |  |  |  |  |  |  |
Mortgage loan |  | $ 20,500 |  |  |  |  |  |  |  |  |
840 N. Michigan Avenue |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term debt, gross |  |  |  |  |  |  | $ 2,300 | 1,400 |  |  |
Equity in earnings (losses) of unconsolidated affiliates |  |  |  |  |  |  |  | 400 |  |  |
Investment owned balance principal amount |  |  |  |  |  |  |  | 18,500 |  |  |
Investment Owned Balance Principal Paydown |  |  |  |  |  |  |  | $ 17,500 |  |  |
Description of maturity date |  |  |  |  |  |  |  | the maturity date was extended from February 2025 to December 2026. |  |  |
Proceeds from sale and maturity of other investments |  |  |  |  |  |  |  | $ 55,000 |  |  |
Percentage of unpaid outstanding principal |  |  |  |  |  |  |  | 50.00% |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  | 3.42% |  |  |
Mortgage loan |  |  |  |  |  |  |  | $ 73,500 |  |  |
840 N. Michigan Avenue | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument interest rate increase decrease |  |  |  |  |  |  |  | 6.50% |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  | 91.85% |  |  |
840 N. Michigan Avenue | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument interest rate increase decrease |  |  |  |  |  |  |  | 4.40% |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  | 88.43% |  |  |
1238 Wisconsin Avenue |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Term loan |  |  |  |  |  |  |  | $ 5,300 |  |  |
Construction loan commitment |  |  |  |  |  |  |  | 12,800 |  |  |
Long-term debt, gross |  |  |  |  |  |  |  | 12,800 |  |  |
Fund V |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  |  |  | 20,200 |  |  |
Long-term debt, gross |  |  |  |  |  |  |  | 33,500 |  |  |
Equity method investment, ownership percentage |  |  | 90.00% |  |  |  | 20.10% |  |  |  |
Venture Capital Gain (Loss), Net |  |  | $ 11,600 |  |  |  |  |  |  |  |
Share of the gain based on ownership |  |  | $ 2,300 |  |  |  |  |  |  |  |
Fund V | Bridge Loan |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term line of credit, noncurrent |  |  |  |  |  |  |  | 31,700 |  |  |
Mohawk Commons |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Purchase Price |  |  |  |  |  |  |  | 62,100 |  |  |
Mortgage loan |  |  |  |  |  |  |  | 39,700 |  |  |
Fund V Acquisition One |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Mortgage loan |  |  |  |  |  |  |  | 36,000 |  |  |
Mortgage loan funded at closing |  |  |  |  |  |  |  | $ 31,800 |  |  |
Albertsons |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Proceeds from dividends received |  |  |  |  |  | $ 28,500 |  |  |  |  |
Investment, shares |  |  |  |  |  | $ 11,400 |  |  |  |  |
Share distributed to investor |  |  |  |  |  | 4.1 |  |  |  |  |
Investment owned, shares |  |  |  |  |  | 1.6 |  |  |  |  |
Shops at Grand - Queens, NY |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Percentage of voting interests acquired |  |  |  |  | 5.00% |  |  |  |  |  |
Investment Owned, Fair Value |  |  |  |  | $ 2,400 |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  | 95.00% |  |  |  |  |  |
Sale price |  |  |  |  | $ 48,300 |  |  |  |  |  |
[1] | Includes $111.2 million and $151.4 million, respectively, of variable-rate debt that is subject to interest cap agreements as of the periods presented. The effective fixed rates ranged fro m 4.50% to 6.00%.
[2] | Includes $852.0 million and $1,249.8 million, respectively, of variable-rate debt that has been fixed with interest rate swap agreements as of the periods presented. The effective fixed rates ranged from 1.98% to 4.61%.

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