XML 91 R77.htm IDEA: XBRL DOCUMENT
v3.21.1

Fair Value of Financial Instruments - Quantitative Information about Significant Unobservable Inputs Used in Valuation of Level 3 Assets and Liabilities Measured at Fair Value (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2021 USD ($) $ / loan | Dec. 31, 2020 USD ($) | Mar. 31, 2020
Assets |  |  |
ABS issued, net, Fair value | $ | $ 6,475,472 | $ 6,900,362 |
ABS Issued |  |  |
Liabilities |  |  |
ABS issued | $ | $ 1,325,920 |  |
ABS Issued | Prepayment rate (annual CPR) | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.08 |  |
ABS Issued | Prepayment rate (annual CPR) | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.54 |  |
ABS Issued | Prepayment rate (annual CPR) | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.31 |  |
ABS Issued | Discount rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.01 |  |
ABS Issued | Discount rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.19 |  |
ABS Issued | Discount rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
ABS Issued | Default rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0 |  |
ABS Issued | Default rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.31 |  |
ABS Issued | Default rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.02 |  |
ABS Issued | Loss severity | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.30 |  |
ABS Issued | Loss severity | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.50 |  |
ABS Issued | Loss severity | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.32 |  |
Freddie Mac SLST |  |  |
Liabilities |  |  |
ABS issued | $ | $ 1,725,235 |  |
Freddie Mac SLST | Prepayment rate (annual CPR) | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.06 |  |
Freddie Mac SLST | Prepayment rate (annual CPR) | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.08 |  |
Freddie Mac SLST | Prepayment rate (annual CPR) | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.06 |  |
Freddie Mac SLST | Discount rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.01 |  |
Freddie Mac SLST | Discount rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.07 |  |
Freddie Mac SLST | Discount rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
Freddie Mac SLST | Default rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.06 |  |
Freddie Mac SLST | Default rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.12 |  |
Freddie Mac SLST | Default rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.08 |  |
Freddie Mac SLST | Loss severity | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.35 |  |
Freddie Mac SLST | Loss severity | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.35 |  |
Freddie Mac SLST | Loss severity | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.35 |  |
Freddie Mac K-Series |  |  |
Liabilities |  |  |
ABS issued | $ | $ 460,565 |  |
Freddie Mac K-Series | Discount rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.01 |  |
Freddie Mac K-Series | Discount rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.10 |  |
Freddie Mac K-Series | Discount rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.02 |  |
CAFL |  |  |
Liabilities |  |  |
ABS issued | $ | $ 2,963,752 |  |
CAFL | Prepayment rate (annual CPR) | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
CAFL | Prepayment rate (annual CPR) | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
CAFL | Prepayment rate (annual CPR) | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
CAFL | Discount rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.01 |  |
CAFL | Discount rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.20 |  |
CAFL | Discount rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
CAFL | Default rate | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.03 |  |
CAFL | Default rate | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.17 |  |
CAFL | Default rate | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.11 |  |
CAFL | Loss severity | Minimum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.30 |  |
CAFL | Loss severity | Maximum |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.30 |  |
CAFL | Loss severity | Weighted Average |  |  |
Liabilities |  |  |
ABS issued, measurement input | 0.30 |  |
Jumbo fixed-rate loans |  |  |
Assets |  |  |
ABS issued, net, Fair value | $ | $ 422,819 |  |
Jumbo fixed-rate loans | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 0.20 |  |
Jumbo fixed-rate loans | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 0.20 |  |
Jumbo fixed-rate loans | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 0.20 |  |
Jumbo fixed-rate loans | Whole Loan Spread to TBA Price | Minimum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 3.75 |  |
Jumbo fixed-rate loans | Whole Loan Spread to TBA Price | Maximum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 3.75 |  |
Jumbo fixed-rate loans | Whole Loan Spread to TBA Price | Weighted Average |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 3.75 |  |
Jumbo fixed-rate loans | Whole loan spread to swap rate | Minimum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 0.0250 |  |
Jumbo fixed-rate loans | Whole loan spread to swap rate | Maximum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 0.0250 |  |
Jumbo fixed-rate loans | Whole loan spread to swap rate | Weighted Average |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 0.0250 |  |
Jumbo loans committed to sell |  |  |
Assets |  |  |
Loans receivable, fair value | $ | $ 573,657 |  |
Jumbo loans committed to sell | Whole loan committed sales price | Minimum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 100.68 |  |
Jumbo loans committed to sell | Whole loan committed sales price | Maximum |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 103.28 |  |
Jumbo loans committed to sell | Whole loan committed sales price | Weighted Average |  |  |
Assets |  |  |
Loans held-for-sale, measurement input | 101.50 |  |
Legacy Sequoia |  |  |
Assets |  |  |
Loans receivable, fair value | $ | $ 274,861 |  |
Sequoia Choice |  |  |
Assets |  |  |
Loans receivable, fair value | $ | 1,276,112 |  |
Liabilities |  |  |
Fair value of securities owned | $ | 226,000 |  |
Freddie Mac SLST |  |  |
Assets |  |  |
Loans receivable, fair value | $ | 2,154,351 |  |
Liabilities |  |  |
Fair value of securities owned | $ | 431,000 |  |
Single-family rental loans |  |  |
Assets |  |  |
Loans receivable, fair value | $ | $ 333,110 |  |
Single-family rental loans | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.03 |  |
Single-family rental loans | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.03 |  |
Single-family rental loans | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.03 |  |
Single-family rental loans | Senior credit spread | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0075 |  |
Single-family rental loans | Senior credit spread | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0075 |  |
Single-family rental loans | Senior credit spread | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0075 |  |
Single-family rental loans | Subordinate credit spread | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0120 |  |
Single-family rental loans | Subordinate credit spread | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.1598 |  |
Single-family rental loans | Subordinate credit spread | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0312 |  |
Single-family rental loans | Senior credit support | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.33 |  |
Single-family rental loans | Senior credit support | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.33 |  |
Single-family rental loans | Senior credit support | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.33 |  |
Single-family rental loans | IO discount rate | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.07 |  |
Single-family rental loans | IO discount rate | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.10 |  |
Single-family rental loans | IO discount rate | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.08 |  |
Single-family rental loans | Non-securitizable loan dollar price | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 86 |  |
Single-family rental loans | Non-securitizable loan dollar price | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 102 |  |
Single-family rental loans | Non-securitizable loan dollar price | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 99 |  |
CAFL |  |  |
Assets |  |  |
Loans receivable, fair value | $ | $ 3,212,526 |  |
Liabilities |  |  |
Fair value of securities owned | $ | 261,000 |  |
Bridge loans |  |  |
Assets |  |  |
Loans receivable, fair value | $ | $ 626,484 |  |
Bridge loans | Discount rate | Minimum |  |  |
Assets |  |  |
Loans held-for-investment, measurement input | 0.06 |  |
Bridge loans | Discount rate | Maximum |  |  |
Assets |  |  |
Loans held-for-investment, measurement input | 0.15 |  |
Bridge loans | Discount rate | Weighted Average |  |  |
Assets |  |  |
Loans held-for-investment, measurement input | 0.08 |  |
Freddie Mac K-Series |  |  |
Assets |  |  |
Loans receivable, fair value | $ | $ 489,545 |  |
Liabilities |  |  |
Fair value of securities owned | $ | 29,000 |  |
Trading and AFS securities |  |  |
Assets |  |  |
Trading and AFS securities | $ | $ 364,320 |  |
Trading and AFS securities | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Trading and AFS securities | 0.07 |  |
Trading and AFS securities | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Trading and AFS securities | 0.65 |  |
Trading and AFS securities | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Trading and AFS securities | 0.28 |  |
Trading and AFS securities | Discount rate | Minimum |  |  |
Assets |  |  |
Trading and AFS securities | 0.03 |  |
Trading and AFS securities | Discount rate | Maximum |  |  |
Assets |  |  |
Trading and AFS securities | 0.27 |  |
Trading and AFS securities | Discount rate | Weighted Average |  |  |
Assets |  |  |
Trading and AFS securities | 0.08 |  |
Trading and AFS securities | Default rate | Minimum |  |  |
Assets |  |  |
Trading and AFS securities | 0 |  |
Trading and AFS securities | Default rate | Maximum |  |  |
Assets |  |  |
Trading and AFS securities | 0.25 |  |
Trading and AFS securities | Default rate | Weighted Average |  |  |
Assets |  |  |
Trading and AFS securities | 0.04 |  |
Trading and AFS securities | Loss severity | Minimum |  |  |
Assets |  |  |
Trading and AFS securities | 0 |  |
Trading and AFS securities | Loss severity | Maximum |  |  |
Assets |  |  |
Trading and AFS securities | 0.50 |  |
Trading and AFS securities | Loss severity | Weighted Average |  |  |
Assets |  |  |
Trading and AFS securities | 0.20 |  |
Trading and AFS securities | Measurement Input, CRT Dollar Price | Minimum |  |  |
Assets |  |  |
Trading and AFS securities | 90 |  |
Trading and AFS securities | Measurement Input, CRT Dollar Price | Maximum |  |  |
Assets |  |  |
Trading and AFS securities | 112 |  |
Trading and AFS securities | Measurement Input, CRT Dollar Price | Weighted Average |  |  |
Assets |  |  |
Trading and AFS securities | 98 |  |
Servicer advance investments |  |  |
Assets |  |  |
Servicing asset | $ | $ 206,525 |  |
Servicer advance investments | Minimum |  |  |
Assets |  |  |
Expected remaining life | 4 years |  |
Servicer advance investments | Maximum |  |  |
Assets |  |  |
Expected remaining life | 4 years |  |
Servicer advance investments | Weighted Average |  |  |
Assets |  |  |
Expected remaining life | 4 years |  |
Servicer advance investments | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.20 |  |
Servicer advance investments | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.30 |  |
Servicer advance investments | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.20 |  |
Servicer advance investments | Discount rate | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.03 |  |
Servicer advance investments | Discount rate | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.03 |  |
Servicer advance investments | Discount rate | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.03 |  |
Residential loan purchase commitments, net |  |  |
Liabilities |  |  |
Loan purchase commitments, net | $ | $ 33,942 |  |
Residential loan purchase commitments, net | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.20 |  |
Residential loan purchase commitments, net | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.20 |  |
Residential loan purchase commitments, net | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.20 |  |
Residential loan purchase commitments, net | Whole Loan Spread to TBA Price | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 3.75 |  |
Residential loan purchase commitments, net | Whole Loan Spread to TBA Price | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 3.75 |  |
Residential loan purchase commitments, net | Whole Loan Spread to TBA Price | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 3.75 |  |
Residential loan purchase commitments, net | Whole loan spread to swap rate | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0250 |  |
Residential loan purchase commitments, net | Whole loan spread to swap rate | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0250 |  |
Residential loan purchase commitments, net | Whole loan spread to swap rate | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 0.0250 |  |
Residential loan purchase commitments, net | Mortgage servicing income | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0 |  |
Residential loan purchase commitments, net | Mortgage servicing income | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.0014 |  |
Residential loan purchase commitments, net | Mortgage servicing income | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.0008 |  |
Residential loan purchase commitments, net | Committed sales price | Minimum |  |  |
Liabilities |  |  |
Loan purchase commitments, measurement input | 98.53 |  |
Residential loan purchase commitments, net | Committed sales price | Maximum |  |  |
Liabilities |  |  |
Loan purchase commitments, measurement input | 102.15 |  |
Residential loan purchase commitments, net | Committed sales price | Weighted Average |  |  |
Liabilities |  |  |
Loan purchase commitments, measurement input | 100.13 |  |
Residential loan purchase commitments, net | Pull-through rate | Minimum |  |  |
Liabilities |  |  |
Loan purchase commitments, measurement input | 0.22 |  |
Residential loan purchase commitments, net | Pull-through rate | Maximum |  |  |
Liabilities |  |  |
Loan purchase commitments, measurement input | 1 |  |
Residential loan purchase commitments, net | Pull-through rate | Weighted Average |  |  |
Liabilities |  |  |
Loan purchase commitments, measurement input | 0.76 |  |
Residential loan purchase commitments, net | MSR Multiple | Minimum |  |  |
Assets |  |  |
Loans receivable, measurement input | 0 |  |
Residential loan purchase commitments, net | MSR Multiple | Maximum |  |  |
Assets |  |  |
Loans receivable, measurement input | 3.8 |  |
Residential loan purchase commitments, net | MSR Multiple | Weighted Average |  |  |
Assets |  |  |
Loans receivable, measurement input | 2.8 |  |
MSRs |  |  |
Assets |  |  |
Servicing asset | $ | $ 7,945 |  |
MSRs | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.09 |  |
MSRs | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 1 |  |
MSRs | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.39 |  |
MSRs | Discount rate | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.12 |  |
MSRs | Discount rate | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.12 |  |
MSRs | Discount rate | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.12 |  |
MSRs | Per loan annual cost to service | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 97 |  |
MSRs | Per loan annual cost to service | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 97 |  |
MSRs | Per loan annual cost to service | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 97 |  |
Excess MSRs |  |  |
Assets |  |  |
Servicing asset | $ | $ 32,465 |  |
Excess MSRs | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.20 |  |
Excess MSRs | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.28 |  |
Excess MSRs | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.23 |  |
Excess MSRs | Discount rate | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.14 |  |
Excess MSRs | Discount rate | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.17 |  |
Excess MSRs | Discount rate | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.16 |  |
Excess MSRs | Excess mortgage servicing income | Minimum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.0008 |  |
Excess MSRs | Excess mortgage servicing income | Maximum |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.0017 |  |
Excess MSRs | Excess mortgage servicing income | Weighted Average |  |  |
Assets |  |  |
Servicing asset, measurement input | 0.0011 |  |
Shared home appreciation options |  |  |
Assets |  |  |
Shared home appreciation options | $ | $ 45,823 |  |
Shared home appreciation options | Prepayment rate (annual CPR) | Minimum |  |  |
Assets |  |  |
Shared home appreciation options |  |  | 0.14
Shared home appreciation options | Prepayment rate (annual CPR) | Maximum |  |  |
Assets |  |  |
Shared home appreciation options |  |  | 0.24
Shared home appreciation options | Prepayment rate (annual CPR) | Weighted Average |  |  |
Assets |  |  |
Shared home appreciation options |  |  | 0.17
Shared home appreciation options | Discount rate | Minimum |  |  |
Assets |  |  |
Shared home appreciation options | 0.13 |  |
Shared home appreciation options | Discount rate | Maximum |  |  |
Assets |  |  |
Shared home appreciation options | 0.13 |  |
Shared home appreciation options | Discount rate | Weighted Average |  |  |
Assets |  |  |
Shared home appreciation options | 0.13 |  |
Shared home appreciation options | Home price appreciation | Minimum |  |  |
Assets |  |  |
Shared home appreciation options |  |  | 0.03
Shared home appreciation options | Home price appreciation | Maximum |  |  |
Assets |  |  |
Shared home appreciation options |  |  | 0.04
Shared home appreciation options | Home price appreciation | Weighted Average |  |  |
Assets |  |  |
Shared home appreciation options |  |  | 0.03
REO |  |  |
Assets |  |  |
REO | $ | $ 1,316 |  |
REO | Loss severity | Minimum |  |  |
Assets |  |  |
REO, measurement input | 0.04 |  |
REO | Loss severity | Maximum |  |  |
Assets |  |  |
REO, measurement input | 0.53 |  |
REO | Loss severity | Weighted Average |  |  |
Assets |  |  |
REO, measurement input | 0.25 |  |

X
- Definition Debt Securities, Trading And Available-for-sale, Fair Value Disclosure + References No definition available. + Details
Name: | rwt_DebtSecuritiesTradingAndAvailableforsaleFairValueDisclosure
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt Securities, Trading And Available-for-sale, Measurement Input + References No definition available. + Details
Name: | rwt_DebtSecuritiesTradingAndAvailableforsaleMeasurementInput
Namespace Prefix: | rwt_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Home Appreciation Options, Fair value Disclosure + References No definition available. + Details
Name: | rwt_HomeAppreciationOptionsFairvalueDisclosure
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Home Appreciation Options, Measurement Input + References No definition available. + Details
Name: | rwt_HomeAppreciationOptionsMeasurementInput
Namespace Prefix: | rwt_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loan Purchase Commitments, Fair Value Disclosure + References No definition available. + Details
Name: | rwt_LoanPurchaseCommitmentsFairValueDisclosure
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans Held-for-Investment, Measurement Input + References No definition available. + Details
Name: | rwt_LoansHeldForInvestmentMeasurementInput
Namespace Prefix: | rwt_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Loans Receivable, Measurement Input + References No definition available. + Details
Name: | rwt_LoansReceivableMeasurementInput
Namespace Prefix: | rwt_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Servicing Asset, Expected Remaining Life + References No definition available. + Details
Name: | rwt_ServicingAssetExpectedRemainingLife
Namespace Prefix: | rwt_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_AssetsFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of input used to measure derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_DerivativeLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition The fair value as of the balance sheet date of firm holdings in private equity, mezzanine, venture capital, merchant banking, real estate and special situations investments. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
Name: | us-gaap_FinancialInstrumentsOwnedPrincipalInvestmentsAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LiabilitiesFairValueDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value of input used to measure loan, held for sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_LoansHeldForSaleMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI http://asc.fasb.org/subtopic&trid=2196772 + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Carrying amount of other real estate not separately disclosed, including, but not limited to, real estate investments, real estate loans that qualify as investments in real estate, and premises that are no longer used in operations may also be included in real estate owned. This does not include real estate assets taken in settlement of troubled loans through surrender or foreclosure. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(4)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
Name: | us-gaap_OtherRealEstate
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_OtherRealEstateOwnedMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
Name: | us-gaap_ServicingAsset
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure servicing asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_ServicingAssetMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value of a liability representing servicing arrangements under which the estimated future revenue from contractually specified servicing fees, late charges, and other ancillary revenues are not expected to adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=116651436&loc=d3e122625-111746 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 + Details
Name: | us-gaap_ServicingLiabilityAtFairValueAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Value of input used to measure servicing liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
Name: | us-gaap_ServicingLiabilityMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=rwt_ABSIssuedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPrepaymentRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_WeightedAverageMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDefaultRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLossSeverityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=rwt_FreddieMacSLSTSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=rwt_FreddieMacKSeriesSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByLiabilityClassAxis=rwt_CAFLSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_ResidentialLoansPricedToSecuritizationAndWholeLoanMarketUncommittedToSellMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_WholeLoanSpreadToTBAPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputWholeLoanSpreadToSwapRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_ResidentialLoansPricedToWholeLoanMarketandCommittedtoSellMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputWholeLoanCommittedSalesPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_LegacySequoiaSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_SequoiaChoiceSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_FreddieMacSLSTSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_SingleFamilyBusinessPurposeResidentialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_SeniorCreditSpreadMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputSubordinateCreditSpreadMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_SeniorCreditSupportMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputISODiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputNonSecuritizableLoanDollarPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_CAFLSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_ResidentialBridgeLoansHeldForInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_FreddieMacKSeriesSecuritizationEntitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_InvestmentSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputCRTDollarPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_ServicerAdvanceInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=us-gaap_LoanPurchaseCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputMortgageServicingIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputCommittedSalesPriceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputPullthroughRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MSRMultipleMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_MortgageServicingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputPerLoanAnnualCostToServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_ExcessMortgageServicingRightsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputExcessMortgageServicingAmountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_HomeAppreciationOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=rwt_MeasurementInputHomePriceAppreciationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByAssetClassAxis=rwt_OtherRealEstateOwnedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |