XML 90 R79.htm IDEA: XBRL DOCUMENT
v3.24.3

Home Equity Investments (HEI) - Activity of HEI (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Fair value of HEI purchased and originated |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | $ 0 | $ 0 | $ 0 | $ 0
Fair value of HEI purchased and originated | Redwood |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | 460 | 113 | 1,066 | 25,626
Net market valuation gains (losses) recorded |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | 19,408 | 4,212 | 51,861 | 8,418
Net market valuation gains (losses) recorded | Redwood |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |
Net market valuation gains (losses) | $ 5,812 | $ 9,290 | $ 23,618 | $ 21,598

X
- Definition Net Market Valuation Gains (Losses) + References No definition available. + Details
Name: | rwt_NetMarketValuationGainsLosses
Namespace Prefix: | rwt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 + Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | dei_LegalEntityAxis=rwt_RedwoodMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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