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Fair Value - Schedule of Significant Assumptions used in Valuation (Details) | Dec. 31, 2022 year USD ($) | Dec. 31, 2021 USD ($) year
--- | --- | ---
Life in years | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 5.0 | 5.7
Life in years | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 5.0 | 5.7
Weighted average prepayment speed | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.180 | 0.160
Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.069 | 0.085
Weighted average prepayment speed | Fair Value Non-Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.079 | 0.121
Weighted average prepayment speed | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.180 | 0.160
Weighted average prepayment speed | Mortgage Servicing Rights Pledged |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.076 | 0.109
Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.014 | 0.012
Weighted average delinquency rate | Fair Value Non-Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.101 | 0.119
Weighted average delinquency rate | Mortgage Servicing Rights Pledged |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.071 | 0.088
Weighted average discount rate | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.051 | 0.026
Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.096 | 0.085
Weighted average discount rate | Fair Value Non-Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.106 | 0.112
Weighted average discount rate | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.050 | 0.025
Weighted average discount rate | Mortgage Servicing Rights Pledged |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.102 | 0.105
Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | $ | 72 | 71
Weighted average cost to service (in dollars) | Fair Value Non-Agency Mortgage Servicing Rights |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | $ | 201 | 205
Weighted average cost to service (in dollars) | Mortgage Servicing Rights Pledged |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | $ | 174 | 182
Minimum | Life in years | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 1.0 | 1.0
Minimum | Life in years | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 1.0 | 1.0
Minimum | Weighted average prepayment speed | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.132 | 0.112
Minimum | Weighted average prepayment speed | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.132 | 0.112
Maximum | Life in years | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 7.6 | 8.2
Maximum | Life in years | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 7.6 | 8.2
Maximum | Weighted average prepayment speed | Loans Held for Investment |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.450 | 0.366
Maximum | Weighted average prepayment speed | HMBS - Related Borrowings |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Measurement inputs | 0.450 | 0.366

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