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v3.23.1

Use of Special Purpose Entities and Variable Interest Entities - Loan Securitization Transaction (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Variable Interest Entity [Line Items] |  |
Weighted Average Cost of Funding | 3.95% | 3.70%
Asset-backed Securities, Securitized Loans and Receivables |  |
Variable Interest Entity [Line Items] |  |
Aggregate unpaid principal balance of residential whole loans sold | $ 6,747,911 | $ 6,079,749
Outstanding amount of Senior Bonds, at carrying value | 889,928 | 922,220
Outstanding amount of Senior Bonds, at fair value | 2,940,381 | 2,435,370
Outstanding amount of Senior Bonds, total | $ 3,830,309 | $ 3,357,590
Weighted Average Cost of Funding | 2.96% | 3.38%
Weighted average contractual maturity of Senior Bonds | 37 years | 38 years
Cash received | $ 5,807,409 | $ 5,286,305
Debt issuance cost | 2,300 | 2,900
Senior Notes |  |
Variable Interest Entity [Line Items] |  |
Cash received | 523,200 |
Senior Notes | Asset-backed Securities, Securitized Loans and Receivables |  |
Variable Interest Entity [Line Items] |  |
Debt instrument, face amount | 5,856,311 | 5,333,090
Proceeds from Senior bond sold with Step up feature | $ 2,400,000 | 1,900
Senior Notes | Asset-backed Securities, Securitized Loans and Receivables | Minimum |  |
Variable Interest Entity [Line Items] |  |
Debt instrument, basis spread on variable rate | 1.00% |
Debt instrument, coupon step-up period | 24 months |
Senior Notes | Asset-backed Securities, Securitized Loans and Receivables | Maximum |  |
Variable Interest Entity [Line Items] |  |
Debt instrument, basis spread on variable rate | 3.00% |
Debt instrument, coupon step-up period | 48 months |
Senior Notes | Asset-backed Securities, Securitized Loans and Receivables | Median |  |
Variable Interest Entity [Line Items] |  |
Debt instrument, basis spread on variable rate | 2.00% |
Senior Support Certificates | Asset-backed Securities, Securitized Loans and Receivables |  |
Variable Interest Entity [Line Items] |  |
Debt instrument, face amount | $ 857,176 | $ 715,640

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