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Residential Loans - Quarterly Activity of Residential Loans Held-for-Sale (Details) - Residential Loans $ in Thousands | 3 Months Ended
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Mar. 31, 2023 USD ($) securitization | Mar. 31, 2022 USD ($) securitization
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Principal balance of loans acquired | $ 53,046 | $ 2,115,191
Principal balance of loans sold | 173,153 | 1,827,364
Principal balance of loans transferred to HFI | 657,295 | 687,192
Net market valuation gains (losses) recorded | 7,178 | (31,451)
Legacy Sequoia |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Principal balance of loans acquired | $ 0 | $ 102,000
Number of seasoned securities | securitization | 0 | 3

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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123596393&loc=d3e14172-108612 + Details
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