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Residential Whole Loans - Realized Credit Losses Net of Recoveries (Details) - Residential whole loan - 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] |  |  |  |
Realized credit losses, net of recoveries | $ (1,349) | $ 773 | $ (1,991) | $ 684
Business purpose loans | Single-family transitional loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Realized credit losses, net of recoveries | (271) | 971 | 381 | 1,099
Business purpose loans | Multifamily transitional loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Realized credit losses, net of recoveries | (80) | 0 | (107) | 0
Business purpose loans | Single-family rental loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Realized credit losses, net of recoveries | (567) | 117 | (1,454) | 459
Non-QM loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Realized credit losses, net of recoveries | 87 | 869 | 88 | 861
Legacy RPL/NPL loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Realized credit losses, net of recoveries | (518) | (1,184) | (899) | (1,735)
Other loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Realized credit losses, net of recoveries | $ 0 | $ 0 | $ 0 | $ 0

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