Asset-Backed Securities Issued - Narrative (Details) $ in Thousands		3 Months Ended
	Mar. 01, 2028	Mar. 31, 2026 USD ($) entity		Dec. 31, 2025 USD ($)		Mar. 31, 2025 USD ($)	[2]
Debt Instrument [Line Items]
AFS		$ 294,250		$ 287,557
Carrying value of collateral		5,025,490		4,878,915
Principal Amount		4,887,644		4,822,478
Real estate owned		121,167		124,270
Restricted cash		92,285	[1],[2]	193,446	[1]	$ 86,557
Sequoia Re-securitization Trust
Debt Instrument [Line Items]
AFS		174,000		$ 165,000
Asset-backed securities issued | CAFL 2025-RTL2 Issuer, LP
Debt Instrument [Line Items]
Principal Amount		$ 225,000
CAFL bridge securitization entities | entity		3
Bridge loan		$ 223,000
Real estate owned		38,000
Restricted cash		$ 16,000
VIEs
Debt Instrument [Line Items]
VIE, ownership interest rate (as a percent)		80.00%
VIEs | Asset-backed securities issued
Debt Instrument [Line Items]
Contractual maturities of ABS (in years)		5 years
VIEs | Asset-backed securities issued | CAFL 2025-RTL2 Issuer, LP
Debt Instrument [Line Items]
Debt instrument, interest rate (as a percent)		7.10%
Principal Amount		$ 225,000
Bridge loan		66,000
Real estate owned		$ 19,000
VIEs | Asset-backed securities issued | CAFL 2025-RTL2 Issuer, LP | Beginning in April 2029
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage, increase		0.030
VIEs | Asset-backed securities issued | CAFL 2025-RTL2 Issuer, LP | Beginning in April 2030 through final maturity in March 2036
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage, increase		0.040
VIEs | Sequoia securities
Debt Instrument [Line Items]
Debt instrument, asset backed securities, sold		$ 136,000
Debt instrument, interest rate (as a percent)		6.10%
VIEs | Sequoia securities | Sequoia Re-securitization Trust
Debt Instrument [Line Items]
AFS		$ 21,000
VIEs | Sequoia securities | Sequoia securities
Debt Instrument [Line Items]
Carrying value of collateral		$ 172,000
VIEs | Sequoia securities | Q2 2025 Subordinate Securities Transfer
Debt Instrument [Line Items]
VIE, ownership interest rate (as a percent)		100.00%
VIEs | Sequoia securities | Forecast
Debt Instrument [Line Items]
Increase in interest rate (as a percent)	3.00%

[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 March 31, 2026 and December 31, 2025, assets of consolidated VIEs totaled $22,076,415 and $18,927,094, respectively. At March 31, 2026 and December 31, 2025, liabilities of consolidated VIEs totaled $20,784,429 and $17,850,175, respectively. See Note 16 for further discussion.

[2] Restricted cash primarily includes cash held at our consolidated Servicing Investment entities, and cash associated with our risk-sharing transactions, as well as cash collateral for certain consolidated securitization entities.