XML 123 R106.htm IDEA: XBRL DOCUMENT
v3.23.3

Derivative Financial Instruments - Aggregate Fair Value and Notional Amount of Derivative Financial Instruments (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Derivative [Line Items] |  |
Fair Value | $ 28,905 | $ 3,975
Notional Amount | 3,273,707 | 1,772,298
TBAs |  |
Derivative [Line Items] |  |
Notional Amount | 2,000,000 | 1,070,000
Interest rate futures |  |
Derivative [Line Items] |  |
Notional Amount | 204,000 | 411,000
Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (8,781) | (16,855)
Notional Amount | 1,098,870 | 908,532
Derivative Liabilities | TBAs |  |
Derivative [Line Items] |  |
Fair Value | (5,495) | (16,784)
Notional Amount | 425,000 | 845,000
Derivative Liabilities | Interest rate futures |  |
Derivative [Line Items] |  |
Fair Value | (199) | (57)
Notional Amount | 67,700 | 60,000
Derivative Liabilities | Loan purchase and interest rate lock commitments |  |
Derivative [Line Items] |  |
Fair Value | (3,087) | (14)
Notional Amount | 606,170 | 3,532
Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 37,686 | 20,830
Notional Amount | 2,174,837 | 863,766
Derivative Assets | Interest rate swaps |  |
Derivative [Line Items] |  |
Fair Value | 13,819 | 14,625
Notional Amount | 190,000 | 285,000
Derivative Assets | TBAs |  |
Derivative [Line Items] |  |
Fair Value | 16,613 | 1,893
Notional Amount | 1,560,000 | 220,000
Derivative Assets | Interest rate futures |  |
Derivative [Line Items] |  |
Fair Value | 2,187 | 3,976
Notional Amount | 136,200 | 350,600
Derivative Assets | Loan purchase and interest rate lock commitments |  |
Derivative [Line Items] |  |
Fair Value | 5,067 | 336
Notional Amount | $ 288,637 | $ 8,166

X
- Definition Fair value of the assets less the liabilities of a derivative or group of derivatives. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_DerivativeFairValueOfDerivativeNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 815 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480237/815-40-50-5 + Details
Name: | us-gaap_DerivativeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Nominal or face amount used to calculate payment on derivative. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1A -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-1A + Details
Name: | us-gaap_DerivativeNotionalAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=rwt_ToBeAnnouncedContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_FutureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |