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Residential Whole Loans - Net Gain/(Loss) on Residential Whole Loans Measured at Fair Value (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | $ 16,430 | $ (130,703) | $ 4,917 | $ (1,529)
Residential whole loan |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | 16,430 | (130,703) | 4,917 | (1,529)
Residential whole loan | Business purpose loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | (11,474) | (35,931) | (13,587) | 580
Residential whole loan | Business purpose loans | Single-family transitional loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | (5,413) | 304 | (4,121) | 398
Residential whole loan | Business purpose loans | Multifamily transitional loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | (24,503) | 146 | (27,073) | 2,073
Residential whole loan | Business purpose loans | Single-family rental loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | 18,442 | (36,381) | 17,607 | (1,891)
Residential whole loan | Non-QM loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | 32,107 | (87,136) | 29,569 | 1,728
Residential whole loan | Legacy RPL/NPL loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | (3,621) | (6,733) | (9,921) | (4,502)
Residential whole loan | Other loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Net gain/(loss) on residential whole loans measured at fair value through earnings | $ (582) | $ (903) | $ (1,144) | $ 665

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