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Fair Value Measurements - Narrative (Details) $ in Thousands | Mar. 31, 2023 USD ($) custodian | Dec. 31, 2022 USD ($)
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Number of third party custodians held by platform operator of safeguarding assets | custodian | 2 |
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 | $ 22,861 | $ 22,825
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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