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Real Estate Securities - Schedule of Fair Value of AFS Securities by Type (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | $ 204,602 | $ 211,474
Senior |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 39,318 | 39,365
Mezzanine |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 30,197 | 31,867
Subordinate |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 135,087 | 140,242
Other third-party securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 110,050 | 108,504
Other third-party securities | Senior |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 39,318 | 39,365
Other third-party securities | Mezzanine |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 30,197 | 28,948
Other third-party securities | Subordinate |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 40,535 | 40,191
Multifamily securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 0 | 11,749
Multifamily securities | Senior |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 0 | 0
Multifamily securities | Mezzanine |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 0 | 2,919
Multifamily securities | Subordinate |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 0 | 8,830
Jumbo Loan Securities |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 94,552 | 91,221
Jumbo Loan Securities | Senior |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 0 | 0
Jumbo Loan Securities | Mezzanine |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | 0 | 0
Jumbo Loan Securities | Subordinate |  |
Debt and Equity Securities, FV-NI [Line Items] |  |
AFS | $ 94,552 | $ 91,221

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