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Use of Special Purpose Entities and Variable Interest Entities - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Variable Interest Entity [Line Items] |  |
Total residential whole loans | $ 7,800,000 | $ 7,500,000
Asset-backed Securities, Securitized Loans and Receivables |  |
Variable Interest Entity [Line Items] |  |
Proceeds from issuance of debt | 5,807,409 | 5,286,305
Residential whole loans | 4,600,000 | 4,000,000
Securitized debt | 3,800,000 | 3,400,000
Asset-backed Securities, Securitized Loans and Receivables | Other Assets |  |
Variable Interest Entity [Line Items] |  |
Real estate owned at fair value | 34,200 | $ 36,500
Senior Bonds |  |
Variable Interest Entity [Line Items] |  |
Proceeds from issuance of debt | 523,200 |
Proceed from debt net of offering expenses and underwriting discount | $ 521,100 |

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- Definition Loans, Including Fair Value Loans, Credit Impaired Loans And Other Loans At Carrying Value + References No definition available. + Details
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- Definition Residential Whole Loans, At Fair Value And Carrying Value + References No definition available. + Details
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- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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- Definition The cash inflow during the period from additional borrowings in aggregate debt. Includes proceeds from short-term and long-term debt. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585 + Details
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