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Fair Value of Financial Instruments - Level 3 Assets (Details) - Recurring basis - Level 3 - Residential whole loans, at fair value - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Balance at beginning of period | $ 6,013,378 | $ 4,956,772 | $ 5,676,430 | $ 4,222,584
Purchases and originations | 734,748 | 674,202 | 1,071,563 | 1,788,245
Draws | 132,914 | 82,482 | 251,991 | 143,822
Changes in fair value recorded in Net gain/(loss) on residential whole loans measured at fair value through earnings | (129,797) | (158,507) | (2,193) | (381,919)
Repayments | (293,792) | (280,662) | (527,226) | (482,747)
Loan sales | (900) | (8,949) | (1,477) | (10,496)
Transfer to REO | (14,586) | (13,290) | (27,123) | (27,441)
Balance at end of period | $ 6,441,965 | 5,252,048 | $ 6,441,965 | 5,252,048
Unsettled residential whole loans |  | $ 28,900 |  | $ 28,900

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Collection Of Principal + References No definition available. + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
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