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Fair Value Measurements - Narrative (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands | 3 Months Ended |
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Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Non-Securitization Investments – Other | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value of non-securitization investments, other | $ 22,780 |  | $ 6,054
Fair Value | Non-Securitization Investments – Other |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value of non-securitization investments, other | 22,780 |  | 6,054
Fair Value | Other Security Investments, Additional Equity Investment One | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value of non-securitization investments, other | 19,739 |  |
Realized investment gain (loss) | (2,168) | $ 3,967 |
Proceeds from sale of investment |  | $ 2,000 |
Fair Value | Other Security Investments, Additional Equity Investment Two | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair value of non-securitization investments, other | $ 2,000 |  | $ 2,000

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