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Segment Information - Supplemental Information by Segment (Details) - USD ($) $ in Thousands		Jun. 30, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Real estate securities	[1]	$ 166,819	$ 240,475
Home equity investments		427,307	403,462
Other investments	[1]	355,537	390,938
Goodwill	[1]	23,373	23,373
Intangible assets		34,677	40,892
Total Assets	[1]	12,796,734	13,030,899
Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		5,455,899	5,613,188
Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		5,226,723	5,332,586
Consolidated Agency multifamily loans
Segment Reporting Information [Line Items]
Fair value of loans		420,096	424,551
Operating Segments | Residential Mortgage Banking
Segment Reporting Information [Line Items]
Real estate securities		9,752	0
Home equity investments		0	0
Other investments		0	0
Goodwill		0	0
Intangible assets		0	0
Total Assets		221,282	660,916
Operating Segments | Residential Mortgage Banking | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		196,737	628,160
Operating Segments | Residential Mortgage Banking | Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		0	0
Operating Segments | Residential Mortgage Banking | Consolidated Agency multifamily loans
Segment Reporting Information [Line Items]
Fair value of loans		0	0
Operating Segments | Business Purpose 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		34,677	40,892
Total Assets		380,404	487,159
Operating Segments | Business Purpose Mortgage Banking | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		0	0
Operating Segments | Business Purpose Mortgage Banking | Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		282,836	364,073
Operating Segments | Business Purpose Mortgage Banking | Consolidated Agency multifamily loans
Segment Reporting Information [Line Items]
Fair value of loans		0	0
Operating Segments | Investment Portfolio
Segment Reporting Information [Line Items]
Real estate securities		157,067	240,475
Home equity investments		427,307	403,462
Other investments		300,670	334,420
Goodwill		0	0
Intangible assets		0	0
Total Assets		11,559,826	11,303,991
Operating Segments | Investment Portfolio | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		5,095,940	4,800,096
Operating Segments | Investment Portfolio | Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		4,943,887	4,968,513
Operating Segments | Investment Portfolio | Consolidated Agency multifamily loans
Segment Reporting Information [Line Items]
Fair value of loans		420,096	424,551
Corporate/ Other
Segment Reporting Information [Line Items]
Real estate securities		0	0
Home equity investments		0	0
Other investments		54,867	56,518
Goodwill		0	0
Intangible assets		0	0
Total Assets		635,222	578,833
Corporate/ Other | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		163,222	184,932
Corporate/ Other | Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		0	0
Corporate/ Other | Consolidated Agency multifamily loans
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 June 30, 2023 and December 31, 2022, assets of consolidated VIEs totaled $9,492,706 and $9,257,291, respectively. At June 30, 2023 and December 31, 2022, liabilities of consolidated VIEs totaled $8,439,522 and $8,270,276, respectively. See Note 4 for further discussion.

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