XML 116 R106.htm IDEA: XBRL DOCUMENT
v3.23.1

Derivative Financial Instruments - Aggregate Fair Value and Notional Amount of Derivative Financial Instruments (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Derivative [Line Items] |  |
Fair Value | $ 761 | $ 3,975
Notional Amount | 906,488 | 1,772,298
TBAs |  |
Derivative [Line Items] |  |
Notional Amount | 330,000 | 1,070,000
Interest rate futures |  |
Derivative [Line Items] |  |
Notional Amount | 290,000 | 411,000
Derivative Liabilities |  |
Derivative [Line Items] |  |
Fair Value | (10,736) | (16,855)
Notional Amount | 412,674 | 908,532
Derivative Liabilities | TBAs |  |
Derivative [Line Items] |  |
Fair Value | (3,018) | (16,784)
Notional Amount | 135,000 | 845,000
Derivative Liabilities | Interest rate futures |  |
Derivative [Line Items] |  |
Fair Value | (7,712) | (57)
Notional Amount | 270,500 | 60,000
Derivative Liabilities | Residential loan purchase commitments, net |  |
Derivative [Line Items] |  |
Fair Value | (6) | (14)
Notional Amount | 7,174 | 3,532
Derivative Assets |  |
Derivative [Line Items] |  |
Fair Value | 11,497 | 20,830
Notional Amount | 493,814 | 863,766
Derivative Assets | Interest rate swaps |  |
Derivative [Line Items] |  |
Fair Value | 8,032 | 14,625
Notional Amount | 240,000 | 285,000
Derivative Assets | TBAs |  |
Derivative [Line Items] |  |
Fair Value | 3,037 | 1,893
Notional Amount | 195,000 | 220,000
Derivative Assets | Interest rate futures |  |
Derivative [Line Items] |  |
Fair Value | 75 | 3,976
Notional Amount | 19,000 | 350,600
Derivative Assets | Residential loan purchase commitments, net |  |
Derivative [Line Items] |  |
Fair Value | 353 | 336
Notional Amount | $ 39,814 | $ 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 -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 + 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 No definition available. + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959 + 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: |