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) |
12 Months Ended | |
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Dec. 31, 2020 |
Dec. 31, 2019 |
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| Minimum | ||
| Assumption For Fair Value As Of Balance Sheet Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items] | ||
| Discount rate | 9.20% | 9.20% |
| Prepayment rate | 10.00% | 8.90% |
| Cost to service (per loan) | 71.0 | 70.8 |
| Maximum | ||
| Assumption For Fair Value As Of Balance Sheet Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items] | ||
| Discount rate | 15.50% | 15.50% |
| Prepayment rate | 38.80% | 30.00% |
| Cost to service (per loan) | 409.4 | 521.4 |
| Weighted Average | ||
| Assumption For Fair Value As Of Balance Sheet Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items] | ||
| Discount rate | 10.00% | 10.20% |
| Prepayment rate | 18.20% | 17.30% |
| Cost to service (per loan) | 92.5 | 97.5 |
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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 Description of other key inputs and assumptions used in measuring the fair value of financial assets or liabilities that relate to a transferor's continuing involvement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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