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Investments in Equity Affiliates - Summary of Equity Method Investments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Investment in Equity Affiliates |  |
Investment in Equity Affiliates | $ 62,795 | $ 79,130
UPB of Loans to Equity Affiliates | 1,688 |
Arbor Residential Investor LLC |  |
Investment in Equity Affiliates |  |
Investment in Equity Affiliates | 33,447 | 46,951
Fifth Wall Ventures |  |
Investment in Equity Affiliates |  |
Investment in Equity Affiliates | 13,422 | 13,584
AMAC Holdings III LLC |  |
Investment in Equity Affiliates |  |
Investment in Equity Affiliates | 13,156 | 15,825
Lightstone Value Plus REIT L.P. |  |
Investment in Equity Affiliates |  |
Investment in Equity Affiliates | 1,895 | 1,895
Docsumo Pte. Ltd. |  |
Investment in Equity Affiliates |  |
Investment in Equity Affiliates | 450 | 450
JT Prime |  |
Investment in Equity Affiliates |  |
Investment in Equity Affiliates | 425 | $ 425
West Shore Café |  |
Investment in Equity Affiliates |  |
UPB of Loans to Equity Affiliates | $ 1,688 |

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