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Real Estate Securities - Narrative (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) Investment | Mar. 31, 2024 USD ($) | Dec. 31, 2024 USD ($) Investment | Dec. 31, 2023 USD ($)
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Net unrealized gain on available-for-sale ("AFS") securities | $ 3,422 | $ 8,656 |  |
Number of AFS securities (in investments) | Investment | 88 |  | 90 |
Number of securities in unrealized loss position | Investment | 19 |  | 20 |
Number of securities in a continuous unrealized loss position for twelve consecutive months or longer (in investments) | Investment | 11 |  | 11 |
Allowance for credit loss | $ 854 | $ 1,853 | $ 921 | $ 2,482
Sales |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Gross realized gains | 1,000 |  |  |
Residential |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
AFS securities, contractual maturities, less than five years | 49,000 |  |  |
Marketable securities, due from five to ten years | $ 5,000 |  |  |

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