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Home Equity Investments (HEI) - Schedule of Activity of Home Equity Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Fair value of HEI purchased and originated | Unsecuritized HEI |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation (losses) gains recorded | $ 4,226 | $ 299 | $ 6,060 | $ 606
Fair value of HEI purchased and originated | Securitized HEI |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation (losses) gains recorded | 0 | 0 | 0 | 0
Net market valuation (losses) gains recorded | Unsecuritized HEI |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation (losses) gains recorded | (14,306) | 11,663 | (7,170) | 17,806
Net market valuation (losses) gains recorded | Securitized HEI |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation (losses) gains recorded | $ 8,621 | $ 17,029 | $ 20,533 | $ 32,453

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