Home Equity Investments (HEI) - Schedule of Home Equity Investments (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]
Home equity investments	[1]	$ 329,883	$ 589,785
Legacy Investments
Schedule of Equity Method Investments [Line Items]
Home equity investments		314,000
Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Home equity investments		138,762	257,315
HEI held at consolidated HEI securitization entities
Schedule of Equity Method Investments [Line Items]
Home equity investments		$ 191,121	$ 332,470

[1] Our consolidated balance sheets include assets of 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, 2025 and 2024, assets of consolidated VIEs totaled $18,927,094 and $14,654,942, respectively. At December 31, 2025 and 2024, liabilities of consolidated VIEs totaled $17,850,175 and $13,620,239, respectively. See Note 15 for further discussion.