Residential Investor Loans - Schedule of Activity of Residential Investor Loans at Redwood (Details) $ in Thousands	12 Months Ended
Dec. 31, 2024 USD ($) loan	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans originated	$ 7,107,623	$ 2,046,299	$ 3,841,952
Principal balance of loans sold to third parties	$ 8,526	1,122	$ 32,735
Number of loans transferred \| loan	1
Term at Redwood \| HEI at Redwood
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans originated	$ 720,537	525,130
Principal balance of loans acquired	19,246	0
Principal balance of loans sold to third parties	713,314	473,677
Transfers of loans between portfolios	0	(278,751)
Transfers from consolidated CAFL securitizations	298,553	0
Net market valuation gains (losses) recorded	(8,777)	(14,430)
Term at Redwood \| HEI at Redwood \| Residential Investor Mortgage Banking Activities, Net
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Net market valuation gains (losses) recorded	11,692	16,500
Bridge at Redwood \| HEI at Redwood
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans originated	967,811	1,153,568
Principal balance of loans acquired	15,677	19,500
Principal balance of loans sold to third parties	516,411	128,664
Transfers of loans between portfolios	(290,159)	(641,194)
Transfers from consolidated CAFL securitizations	0	0
Net market valuation gains (losses) recorded	(40,430)	(39,361)
Bridge at Redwood \| HEI at Redwood \| Residential Investor Mortgage Banking Activities, Net
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Net market valuation gains (losses) recorded	3,767	$ 5,704
Residential Investor Bridge
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans sold to third parties	$ 49,000

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Loan, Transfers From Consolidated CAFL Securitizations

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The cash inflow from repayments of the balance excluding interest (principal) on real estate securities.

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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Subsection 29
-Publisher SEC

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 948
-SubTopic 310
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479628/948-310-S99-1

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Amount of realized and unrealized gain (loss) on investment.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(9)(a))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 230
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-Section 45
-Paragraph 28
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The aggregate cash outflow used to purchase all loans that are held with the intention to resell in the near future.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 21
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-21

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