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v3.23.3

Fair Value - Additional Information (Detail) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2023 USD ($) $ / shares | Dec. 31, 2022 USD ($)
Servicing Assets At Fair Value [Line Items] |  |
Servicing rights of sold loans | $ 2,130.0 | $ 2,160.0
Weighted average net servicing fee income, Basis points | 0.283% |
Weighted average prepayment speed assumption used in the fair value | 7.87% |
Weighted average discount rate | 9.92% |
Minimum [Member] |  |
Servicing Assets At Fair Value [Line Items] |  |
Estimated base annual servicing costs | $ / shares | 75 |
Weighted average discount rate | 9.50% |
Maximum [Member] |  |
Servicing Assets At Fair Value [Line Items] |  |
Estimated base annual servicing costs | $ / shares | 85 |
Weighted average discount rate | 11.50% |
11 Corporate Bonds | Level 3 [Member] |  |
Servicing Assets At Fair Value [Line Items] |  |
Purchase price | $ 3.8 |
Six Mortgage Backed Securities | Level 3 [Member] |  |
Servicing Assets At Fair Value [Line Items] |  |
Purchase price | $ 7.4 |

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