Mortgage Servicing Rights - Summary of the Weighted Average Discount Rate, Prepayment Speed and Cost to Service Assumptions Used to Determine the Fair Value of MSRs (Details) - USD ($) |
3 Months Ended | 12 Months Ended |
|---|---|---|
Mar. 31, 2021 |
Dec. 31, 2020 |
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| Minimum | ||
| Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items] | ||
| Discount rate | 9.20% | 9.20% |
| Prepayment rate | 9.00% | 10.00% |
| Cost to service (per loan) | $ 71.8 | $ 71.0 |
| Maximum | ||
| Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items] | ||
| Discount rate | 15.50% | 15.50% |
| Prepayment rate | 28.10% | 38.80% |
| Cost to service (per loan) | $ 261.3 | $ 409.4 |
| Weighted Average | ||
| Assumption for Fair Value as of Balance Sheet Date of Assets or Liabilities that relate to Transferor's Continuing Involvement [Line Items] | ||
| Discount rate | 10.00% | 10.00% |
| Prepayment rate | 13.10% | 18.20% |
| Cost to service (per loan) | $ 91.6 | $ 92.5 |
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- Definition Assumption For Fair Value Of Assets Or Liabilities That Relate To Transferor's Continuing Involvement, Expected Cost To Service No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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- Definition Discount rate which is used to value residual cash flows generated by financial assets of a securitization, asset-backed financing arrangement, or similar transfer regardless of when the transfer occurred. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Estimated rate of prepayment of principal on financial assets regardless of when the transfer occurred. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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