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Principles of Consolidation - Additional Information (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) entity partnership | Dec. 31, 2021 USD ($)
Variable Interest Entity [Line Items] |  |
Number of partnerships consolidated | partnership | 2 |
VIE, ownership interest rate (as a percent) | 80.00% |
Servicing asset, fair value | $ 265,949 | $ 310,953
Loans for sale at fair value that were acquired | $ 246,000 |
Variable Interest Entity, Primary Beneficiary |  |
Variable Interest Entity [Line Items] |  |
Number of partnerships consolidated | partnership | 2 |
Variable Interest Entity, Not Primary Beneficiary |  |
Variable Interest Entity [Line Items] |  |
Number of securitization entities to which asset transferred (in entities) | entity | 46 |
Number of entities called | entity | 3 |
Unpaid principal balance of loans purchased | $ 102,000 |
Gain related to called security | $ 300 |
Servicing Investment | Variable Interest Entity, Primary Beneficiary |  |
Variable Interest Entity [Line Items] |  |
VIE, ownership interest rate (as a percent) | 80.00% |
Servicing asset, fair value | $ 99,000 |

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