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Home Equity Investments (HEI) - Schedule of Home Equity Investments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Home equity investments | $ 431,272 | $ 403,462
Redwood |  |
Schedule of Equity Method Investments [Line Items] |  |
Home equity investments | 302,122 | 270,835
HEI held at consolidated HEI securitization entity |  |
Schedule of Equity Method Investments [Line Items] |  |
Home equity investments | $ 129,150 | $ 132,627

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