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Segment Information - Supplemental Information by Segment (Details) - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Real estate securities	[1]	$ 284,278	$ 377,411
Other investments	[1]	679,667	641,969
Intangible assets	[1]	34,720	41,561
Total Assets	[1]	13,875,536	14,706,944
Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		6,578,599	7,592,432
Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		5,202,937	4,790,989
Consolidated Agency multifamily loans
Segment Reporting Information [Line Items]
Fair value of loans		443,114	473,514
Operating Segments | Residential Mortgage Banking
Segment Reporting Information [Line Items]
Real estate securities		3,994	4,927
Other investments		0	0
Intangible assets		0	0
Total Assets		1,032,281	1,716,285
Operating Segments | Residential Mortgage Banking | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		990,924	1,673,235
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
Other investments		0	0
Intangible assets		34,720	41,561
Total Assets		645,428	464,967
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		503,945	347,860
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		280,284	372,484
Other investments		615,807	606,267
Intangible assets		0	0
Total Assets		11,513,520	11,770,486
Operating Segments | Investment Portfolio | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		5,378,886	5,688,742
Operating Segments | Investment Portfolio | Business purpose loans
Segment Reporting Information [Line Items]
Fair value of loans		4,698,992	4,443,129
Operating Segments | Investment Portfolio | Consolidated Agency multifamily loans
Segment Reporting Information [Line Items]
Fair value of loans		443,114	473,514
Corporate/ Other
Segment Reporting Information [Line Items]
Real estate securities		0	0
Other investments		63,860	35,702
Intangible assets		0	0
Total Assets		684,307	755,206
Corporate/ Other | Residential loans
Segment Reporting Information [Line Items]
Fair value of loans		208,789	230,455
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, 2022 and December 31, 2021, assets of consolidated VIEs totaled $9,951,520 and $10,661,081, respectively. At June 30, 2022 and December 31, 2021, liabilities of consolidated VIEs totaled $8,899,020 and $9,619,347, respectively. See Note 4 for further discussion.

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