Commitments and Contingencies (Details) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2025 USD ($) lease loan	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2025 USD ($) lease	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Loss Contingencies [Line Items]
Lessee, number of leases | lease		9				9
Present value of remaining lease payments		$ 14,000				$ 14,000
Operating lease expense						$ 2,000	$ 2,000
Lessee, number of office leases | lease		2				2
Operating lease liabilities		$ 12,344				$ 12,344		$ 11,028
Operating lease liability, statement of financial position [Extensible List]		Accounts Payable and Accrued Liabilities				Accounts Payable and Accrued Liabilities
Operating lease right-of-use assets		$ 10,383				$ 10,383		$ 9,167
Operating lease right-of-use asset, statement of financial position [Extensible List]		Other assets				Other assets		Other assets
Derivative liabilities	[1]	$ 68,826				$ 68,826		$ 23,660
Gain (loss) on market valuation adjustments						(32,865)	73,859
Valuation losses		$ 84,704	$ (1,098)			89,892	$ (22,935)
Total Residential Investor Loans
Loss Contingencies [Line Items]
Mortgage loans on real estate, number of loans repurchased | loan		2
Unpaid principal balance		$ 36,000				36,000
Valuation losses		$ 13,000				$ 84,000
Minimum
Loss Contingencies [Line Items]
Term of lease, not yet commenced		1 year				1 year
CPP Joint Venture, Residential Investor Bridge and Term Loans
Loss Contingencies [Line Items]
Amount committed				$ 100,000
Capital contribution						$ 25,000
Oaktree Joint Venture, Residential Investor Bridge and Term Loans
Loss Contingencies [Line Items]
Amount committed					$ 19,000
Capital contribution						5,000
Commitment To Fund Residential Investor Bridge Loan
Loss Contingencies [Line Items]
Commitment to fund loan		$ 435,000				435,000
Derivative liabilities		1,000				1,000
Gain (loss) on market valuation adjustments						400
Purchase obligation		$ 3,000				$ 3,000

[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.