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Financial Instruments and Fair Value Measurements - Schedule of Items Measured at Fair Value on Nonrecurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Real Estate [Line Items] |  |  |
Impairment charges |  | $ 6,450 | $ 0
Fair Value, Measurements, Nonrecurring |  |  |
Real Estate [Line Items] |  |  |
Impairment charges | [1],[2] | 6,450 |
Fair Value, Measurements, Nonrecurring | Acadia Realty Trust |  |  |
Real Estate [Line Items] |  |  |
Impairment charges | [1],[2] | 1,583 |
Fund III | 640 Broadway Manhattan, NY | Fair Value, Measurements, Nonrecurring | Level 3 Inputs Projections |  |  |
Real Estate [Line Items] |  |  |
Impairment charges | [2] | $ 6,450 |
Triggering Event |  | Reduced holding period |
Fund III | 640 Broadway Manhattan, NY | Fair Value, Measurements, Nonrecurring | Level 3 Inputs Projections | Acadia Realty Trust |  |  |
Real Estate [Line Items] |  |  |
Impairment charges | [2] | $ 1,583 |
[1] | Does not include the impairment charge of $0.1 million related to the Company’s investment in Fifth Wall (Note 4) which is recorded in Realized and unrealized holding gains (losses) on investments and other, in the Company’s condensed consolidated Statement of Operations.
[2] | The Company estimated the fair value of 640 Broadway based on a discounted cash flow analysis using a discount rate of 7.65% and a capitalization rate of 5.00%. As significant inputs to the models are unobservable, the Company determined that the value determined for this property falls within Level 3 of the fair value reporting hierarchy. The fair value of 640 Broadway was $48.1 million at the measurement date.

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