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Residential Loans - Quarterly Activity of Residential Loans Held-for-Sale (Details) - Residential Loans $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2022 USD ($) securitization | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) securitization | Jun. 30, 2021 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |  |  |
Principal balance of loans acquired | $ 1,145,450 | $ 3,484,633 | $ 3,260,641 | $ 6,580,681
Principal balance of loans sold | 1,238,327 | 3,324,919 | 3,065,691 | 5,600,751
Principal balance of loans transferred to HFI | 0 | 0 | 687,192 | 0
Net market valuation gains (losses) recorded | (32,527) | $ 26,278 | (63,978) | $ 49,707
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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