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Fair Value of Financial Instruments - Fair Value Methodology (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Purchased loans | $ 987,493 | $ 1,071,774
Purchases excluded from level 2 fair value | 301 | 496
Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Purchased loans | 3,969,944 |
Discounted cash flow | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Purchased loans | 653,523 | 720,766
Discounted cash flow | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Purchased loans | 3,956,992 |
Liquidation model | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Purchased loans | 333,970 | 351,008
Simple average amount | 434 | $ 421
Liquidation model | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Purchased loans | $ 12,952 |
Residential whole loans, at fair value | Level 3 | Liquidation model | Minimum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, annual change in home prices | 4.80% | 4.50%
Liquidation timeline (in years) | 1 month 6 days | 1 month 6 days
Fair value inputs, value of underlying property | $ 28 | $ 10
Residential whole loans, at fair value | Level 3 | Liquidation model | Minimum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, annual change in home prices | 0.00% |
Liquidation timeline (in years) | 9 months 18 days |
Fair value inputs, value of underlying property | $ 60 |
Residential whole loans, at fair value | Level 3 | Liquidation model | Maximum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, annual change in home prices | 20.60% | 21.90%
Liquidation timeline (in years) | 4 years 6 months | 4 years 6 months
Fair value inputs, value of underlying property | $ 4,000 | $ 3,995
Residential whole loans, at fair value | Level 3 | Liquidation model | Maximum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, annual change in home prices | 15.50% |
Liquidation timeline (in years) | 4 years 2 months 12 days |
Fair value inputs, value of underlying property | $ 3,470 |
Discount rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.024 | 0.015
Discount rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.031 |
Discount rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.097 | 0.098
Discount rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.316 |
Discount rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.050 | 0.036
Discount rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.054 |
Discount rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Minimum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.067 | 0.067
Discount rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Minimum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.070 |
Discount rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Maximum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.500 | 0.500
Discount rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Maximum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.070 |
Discount rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.079 | 0.080
Discount rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.070 |
Prepayment rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.000 | 0.000
Prepayment rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.000 |
Prepayment rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.403 | 0.440
Prepayment rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.410 |
Prepayment rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.118 | 0.144
Prepayment rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.133 |
Prepayment rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, annual change in home prices | 9.60% | 9.70%
Prepayment rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, annual change in home prices | 10.70% |
Default rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.000 | 0.000
Default rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.000 |
Default rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.524 | 0.508
Default rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.148 |
Default rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.037 | 0.039
Default rate | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.005 |
Default rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Liquidation timeline (in years) | 1 year 9 months 18 days | 1 year 8 months 12 days
Default rate | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Liquidation timeline (in years) | 1 year 10 months 24 days |
Loss severity | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.000 | 0.000
Loss severity | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Minimum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.000 |
Loss severity | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 1.000 | 1.000
Loss severity | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Maximum | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.420 |
Loss severity | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.118 | 0.117
Loss severity | Residential whole loans, at fair value | Level 3 | Discounted cash flow | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Measurement input | 0.081 |
Loss severity | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Nonperforming |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, value of underlying property | $ 763 | $ 770
Loss severity | Residential whole loans, at fair value | Level 3 | Liquidation model | Weighted Average | Performing |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Fair value inputs, value of underlying property | $ 1,590 |

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- Definition Certain Loans Acquired In Transfer Not Accounted For As Debt Securities Acquired During Period At Acquisition At Fair Value, Level 3, Excluding Loan Purchase Price + References No definition available. + Details
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