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Residential Investor Loans - Schedule of Activity of Securitized Residential Investor Loans Held-for-Investment (Details) - Total Residential Investor Loans - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Residential Investor Term, Securitized |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Net market valuation gains (losses) recorded | $ 20,614 | $ 78,275 | $ 34,667 | $ 89,388
Fair value of loans transferred to HFI | 0 | 0 | 0 | 0
Residential Investor Bridge, Securitized |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Net market valuation gains (losses) recorded | 6,384 | 1,623 | (1,901) | 443
Fair value of loans transferred to HFI | $ 38,179 | $ 62,386 | $ 164,792 | $ 250,319

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