XML 122 R112.htm IDEA: XBRL DOCUMENT
v3.22.1

Asset-Backed Securities Issued - Components of Asset-Backed Securities Issued by Consolidated Securitization Entities Sponsored, Along With Other Selected Information (Details) - Asset-backed securities issued | Mar. 31, 2022 USD ($) series | Dec. 31, 2021 USD ($) series
--- | --- | ---
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 8,872,366,000 | $ 9,253,557,000
Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | (491,704,000) | 34,092,000
Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 9,118,542,000 | 8,970,474,000
Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 245,528,000 | 248,991,000
Legacy Sequoia |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 220,301,000 | $ 227,881,000
Number of series | series | 20 | 20
Legacy Sequoia | Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ (23,899,000) | $ (32,243,000)
Legacy Sequoia | Minimum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 0.57% | 0.23%
Legacy Sequoia | Maximum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 2.05% | 1.44%
Legacy Sequoia | Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 243,879,000 | $ 259,505,000
Legacy Sequoia | Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 321,000 | 619,000
Sequoia |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 3,627,920,000 | $ 3,383,048,000
Number of series | series | 17 | 16
Sequoia | Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ (288,847,000) | $ (2,774,000)
Sequoia | Minimum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 2.46% | 2.40%
Sequoia | Maximum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 5.03% | 5.03%
Sequoia | Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 3,868,206,000 | $ 3,353,073,000
Sequoia | Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 48,561,000 | 32,749,000
CAFL |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 3,012,841,000 | $ 3,474,898,000
Number of series | series | 16 | 16
CAFL | Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ (156,196,000) | $ 16,407,000
CAFL | Minimum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 2.64% | 2.64%
CAFL | Maximum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 5.44% | 5.24%
CAFL | Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 2,998,376,000 | $ 3,264,766,000
CAFL | Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 170,661,000 | 193,725,000
Freddie Mac SLST |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 1,470,043,000 | $ 1,588,463,000
Number of series | series | 3 | 3
Debt instrument, face amount | $ 131,000,000 | $ 145,000,000
Freddie Mac SLST | Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ (9,956,000) | $ 41,111,000
Freddie Mac SLST | Minimum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 3.50% | 3.50%
Freddie Mac SLST | Maximum |  |
Debt Instrument [Line Items] |  |
Range of weighted average interest rates, by series | 4.75% | 4.75%
Freddie Mac SLST | Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 1,463,505,000 | $ 1,535,638,000
Freddie Mac SLST | Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 16,494,000 | 11,714,000
Freddie Mac K-Series |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 419,883,000 | $ 441,857,000
Range of weighted average interest rates, by series | 3.55% | 3.41%
Number of series | series | 1 | 1
Freddie Mac K-Series | Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ (6,280,000) | $ 12,973,000
Freddie Mac K-Series | Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 416,672,000 | 418,700,000
Freddie Mac K-Series | Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 9,491,000 | 10,184,000
HEI |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ 121,378,000 | $ 137,410,000
Range of weighted average interest rates, by series | 3.27% | 3.31%
Number of series | series | 1 | 1
HEI | Revision of Prior Period, Accounting Standards Update, Adjustment |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | $ (6,526,000) | $ (1,382,000)
HEI | Certificates with principal balance |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 127,904,000 | 138,792,000
HEI | Interest-only certificates |  |
Debt Instrument [Line Items] |  |
ABS Issued, Net | 0 | 0
CoreVest |  |
Debt Instrument [Line Items] |  |
Debt instrument, face amount | $ 270,000,000 | $ 270,000,000

X
- Definition Number of Series + References No definition available. + Details
Name: | rwt_NumberOfSeries
Namespace Prefix: | rwt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123466505&loc=SL123495323-112611 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=124435984&loc=d3e28551-108399 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124429444&loc=SL124452920-239629 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69C -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495737-112612 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 55 -Paragraph 69B -URI http://asc.fasb.org/extlink&oid=123466577&loc=SL123495735-112612 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Weighted average interest rate of debt outstanding. + References No definition available. + Details
Name: | us-gaap_DebtWeightedAverageInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740 + Details
Name: | us-gaap_EquitySecuritiesFvNiCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_DebtInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RestatementAxis=srt_RevisionOfPriorPeriodAccountingStandardsUpdateAdjustmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=rwt_CertificatesWithPrincipalValueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=rwt_InterestOnlyCertificatesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=rwt_PointMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=rwt_CoreVestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |