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Residential Loans and Residential Loans Held for Sale, at Fair Value - Schedule of Residential Mortgage Loans, Fair Value Compared to Unpaid Principal (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Fair Value | $ 4,256,683 | $ 3,841,738
Residential loans |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Fair Value | 308,422 | 632,266
Residential loans | Greater than 90 days past due |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Fair Value | 99,764 | 159,558
Unpaid Principal Balance | 116,087 | 183,067
Residential loans | Less than 90 days past due |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Fair Value | 938 | 8,098
Unpaid Principal Balance | $ 993 | $ 8,749

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