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Debt and Preferred Equity Investments - Schedule of Activity in Debt and Preferred Equity Investments (Details) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 USD ($) investment | Dec. 31, 2024 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Balance at beginning of period | $ 303,726 | $ 346,745
Redemptions/sales/syndications/equity ownership/amortization | (3,215) | (64,629)
Net change in loan loss reserves | (300) | 0
Balance at end of period | 315,684 | 303,726
Debt and preferred equity investments | $ 315,684 | 303,726
Number of investments, nonperforming | investment | 1 |
Preferred Equity |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Debt and preferred equity investments | $ 138,954 |
Preferred Equity | 625 Madison Avenue |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Debt and preferred equity investments | 209,700 |
Total floating rate |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Debt and preferred equity investments | 130,398 | 117,160
Alternative Strategy Portfolio | Total floating rate |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Debt and preferred equity investments | 53,500 |
Debt Investment |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Originations/Accretion | 13,240 | 12,890
Preferred Equity Investments |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward] |  |
Originations/Accretion | $ 2,233 | $ 8,720

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