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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Gain (loss) included in earnings from changes in instrument-specific credit risk | $ 40,824 | $ (50,529) |
Fair Value | Fair Value, Nonrecurring | Non-Securitization Investments – Other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value of non-securitization investments, other | 23,085 |  | $ 22,920
Fair Value | Fair Value, Nonrecurring | Other Security Investments, Investment Four | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value of non-securitization investments, other | $ 19,739 |  | $ 19,739

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