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Segment Information - Schedule of Supplemental Information by Segment (Details) - USD ($) $ in Thousands		Dec. 31, 2023		Dec. 31, 2022		Dec. 31, 2021
Segment Reporting Information [Line Items]
Real estate securities	[1]	$ 127,797		$ 240,475
Home equity investments	[1]	550,436		403,462
Other investments	[1]	343,930		390,938
Goodwill		23,373	[1]	23,373	[1]	$ 0
Intangible assets		28,462		40,892
Total Assets	[1]	14,504,327		13,030,899
Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		7,050,637		5,613,188
Business Purpose Loans
Segment Reporting Information [Line Items]
Fair value of loans		5,220,298		5,332,586
Multifamily securities
Segment Reporting Information [Line Items]
Fair value of loans		425,285		424,551
Operating Segments | Residential Consumer Mortgage Banking
Segment Reporting Information [Line Items]
Real estate securities		4,995		0
Home equity investments		0		0
Other investments		0		0
Goodwill		0		0
Intangible assets		0		0
Total Assets		971,535		660,916
Operating Segments | Residential Consumer Mortgage Banking | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		911,192		628,160
Operating Segments | Residential Consumer Mortgage Banking | Business Purpose Loans
Segment Reporting Information [Line Items]
Fair value of loans		0		0
Operating Segments | Residential Consumer Mortgage Banking | Multifamily securities
Segment Reporting Information [Line Items]
Fair value of loans		0		0
Operating Segments | Residential Investor Mortgage Banking
Segment Reporting Information [Line Items]
Real estate securities		0		0
Home equity investments		0		0
Other investments		0		0
Goodwill		23,373		23,373
Intangible assets		28,462		40,892
Total Assets		293,225		487,159
Operating Segments | Residential Investor Mortgage Banking | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		0		0
Operating Segments | Residential Investor Mortgage Banking | Business Purpose Loans
Segment Reporting Information [Line Items]
Fair value of loans		180,250		364,073
Operating Segments | Residential Investor Mortgage Banking | Multifamily securities
Segment Reporting Information [Line Items]
Fair value of loans		0		0
Operating Segments | Investment Portfolio
Segment Reporting Information [Line Items]
Real estate securities		122,802		240,475
Home equity investments		550,323		403,462
Other investments		287,822		334,420
Goodwill		0		0
Intangible assets		0		0
Total Assets		12,718,201		11,303,991
Operating Segments | Investment Portfolio | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		5,999,706		4,800,096
Operating Segments | Investment Portfolio | Business Purpose Loans
Segment Reporting Information [Line Items]
Fair value of loans		5,040,048		4,968,513
Operating Segments | Investment Portfolio | Multifamily securities
Segment Reporting Information [Line Items]
Fair value of loans		425,285		424,551
Corporate/ Other
Segment Reporting Information [Line Items]
Real estate securities		0		0
Home equity investments		113
Other investments		56,108		56,518
Goodwill		0		0
Intangible assets		0		0
Total Assets		521,366		578,833
Corporate/ Other | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		139,739		184,932
Corporate/ Other | Business Purpose Loans
Segment Reporting Information [Line Items]
Fair value of loans		0		0
Corporate/ Other | Multifamily securities
Segment Reporting Information [Line Items]
Fair value of loans		$ 0		$ 0
[1] Our consolidated balance sheets include assets of consolidated variable interest entities (“VIEs”) that can only be used to settle obligations of these VIEs and liabilities of consolidated VIEs for which creditors do not have recourse to Redwood Trust, Inc. or its affiliates. At December 31, 2023 and 2022, assets of consolidated VIEs totaled $10,988,885 and $9,257,291, respectively. At December 31, 2023 and 2022, liabilities of consolidated VIEs totaled $10,096,308 and $8,270,276, respectively. See Note 4 for further discussion.

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