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Home Equity Investments (HEI) - Activity of HEI (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Fair value of HEI purchased and originated |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | $ 0 | $ 0 | $ 0 | $ 0
Fair value of HEI purchased and originated | Redwood |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | 299 | 8,954 | 606 | 25,513
Net market valuation gains (losses) recorded |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | 17,029 | 3,138 | 32,453 | 4,206
Net market valuation gains (losses) recorded | Redwood |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | $ 11,663 | $ 8,468 | $ 17,806 | $ 12,308

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