Principles of Consolidation - Schedule of Unconsolidated VIEs Sponsored by Redwood (Details) - USD ($) $ in Thousands		Jun. 30, 2025	Dec. 31, 2024
On-balance sheet assets, at fair value:
Subordinate securities, classified as AFS		$ 114,499	$ 211,474
Mortgage servicing rights	[1]	298,004	297,683
Variable Interest Entity, Not Primary Beneficiary
On-balance sheet assets, at fair value:
Maximum loss exposure		143,741	140,588
Variable Interest Entity, Not Primary Beneficiary | Subordinate securities, classified as AFS
On-balance sheet assets, at fair value:
Subordinate securities, classified as AFS		95,602	91,221
Interest-only, senior and subordinate securities, classified as trading | Variable Interest Entity, Not Primary Beneficiary
On-balance sheet assets, at fair value:
Interest-only, senior and subordinate securities, classified as trading		35,482	36,811
Mortgage servicing rights | Variable Interest Entity, Not Primary Beneficiary
On-balance sheet assets, at fair value:
Mortgage servicing rights		$ 12,657	$ 12,556

[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, 2025 and December 31, 2024, assets of consolidated VIEs totaled $17,484,443 and $14,654,942, respectively. At June 30, 2025 and December 31, 2024, liabilities of consolidated VIEs totaled $16,386,516 and $13,620,239, respectively. See Note 16 for further discussion.