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Home Equity Investments (HEI) - Schedule of Home Equity Investments (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Home equity investments | $ 340,437 | $ 192,740
HEIs at Redwood | Redwood |  |
Schedule of Equity Method Investments [Line Items] |  |
Home equity investments | 200,709 | 33,187
HEIs at Redwood | HEIs held at consolidated HEI securitization entity |  |
Schedule of Equity Method Investments [Line Items] |  |
Home equity investments | $ 139,728 | $ 159,553

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