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Residential Investor Loans - Classifications and Carrying Values of Residential Investor Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Held-for-sale at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	$ 265,878	$ 180,250
Held-for-sale at fair value | Residential Investor Term | Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	174,485	144,359
Held-for-sale at fair value | Residential Investor Term | CAFL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	0
Held-for-sale at fair value | Residential Investor Bridge | Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	91,393	35,891
Held-for-sale at fair value | Residential Investor Bridge | CAFL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	0
Held-for-investment at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	4,480,296	5,040,048
Held-for-investment at fair value | Residential Investor Term | Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	0
Held-for-investment at fair value | Residential Investor Term | CAFL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	2,661,885	2,971,725
Held-for-investment at fair value | Residential Investor Bridge | Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	1,211,081	1,305,727
Held-for-investment at fair value | Residential Investor Bridge | CAFL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	607,330	762,596
Total Residential Investor Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	4,746,174	5,220,298
Total Residential Investor Loans | Residential Investor Term | Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	174,485	144,359
Total Residential Investor Loans | Residential Investor Term | CAFL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	2,661,885	2,971,725
Total Residential Investor Loans | Residential Investor Bridge | Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	1,302,474	1,341,618
Total Residential Investor Loans | Residential Investor Bridge | CAFL
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	$ 607,330	$ 762,596

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(5)(b))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1

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