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Securitized Debt at Amortized Cost and Securitized Debt at Fair Value - Summary of Securitized Debt at Amortized Cost and Securitized Debt at Fair Value (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
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Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Total securitized debt, at amortized cost |  | $ 1,783,150 | $ 2,019,056
Securitized debt at fair value |  | 3,748,889 | 2,207,408
Unpaid Principal Balance |  |  |
Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Total securitized debt, at amortized cost |  | 1,813,334 | 2,049,790
Securitized debt at fair value |  | 3,739,705 | 2,219,218
Deferred Issuance Costs and Discounts |  |  |
Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Total securitized debt, at amortized cost |  | (30,184) | (30,734)
Adjustment at Issuance to Recognize Fair Value |  |  |
Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Securitized debt at fair value | [1] | (26,608) | (18,231)
Fair Value at Issuance |  |  |
Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Securitized debt at fair value |  | 3,713,097 | 2,200,987
Valuation Adjustment Subsequent to Issuance |  |  |
Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Securitized debt at fair value | [2] | 37,675 | $ 6,421
Fair Value Adjustment Related To Refinance Of Securitization Trust |  |  |
Securitization or Asset-Backed Financing Arrangement, Financial Asset for which Transfer is Accounted as Sale [Line Items] |  |  |
Securitized debt at fair value |  | $ (1,883) |
[1] | Balance sheet adjustment to recognize fair value at issuance. This valuation adjustment is not recognized in net income.
[2] | Valuation adjustment recognized in net income. No valuation change is due to instrument specific credit risk as the Company’s (issuer) credit risk has not changed

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-3 + Details
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- Definition Securitizations at amortized cost. + References No definition available. + Details
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- Definition Securitized debt, at fair value. + References No definition available. + Details
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