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Residential Loans - Schedule of Activity of Residential Loans Held-for-Sale (Details) - Residential Loans $ in Thousands | 12 Months Ended
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Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) securitization
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Principal balance of loans acquired | $ 2,101,161 | $ 3,704,196
Principal balance of loans sold | 270,482 | 3,858,647
Principal balance of loans transferred from HFS to HFI | 1,703,442 | 687,192
Gain (loss) on assets measured at fair value on a non-recurring basis | $ 20,560 | (93,843)
Legacy Sequoia |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Principal balance of loans acquired |  | $ 102,000
Number of seasoned securitizations | securitization |  | 3

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