Asset-Backed Securities Issued - Schedule of Asset-Backed Securities Issued (Details) $ in Thousands		Dec. 31, 2024 USD ($) series	Dec. 31, 2023 USD ($) series
Debt Instrument [Line Items]
Carrying Value	[1]	$ 13,270,204	$ 9,811,880
Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Carrying Value		13,270,204	9,811,880
Total ABS Issued | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		14,047,261	10,588,659
Carrying Value		13,270,204	9,811,880
ABS Issued at Fair Value | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		13,654,309	9,922,113
Carrying Value		12,879,530	9,151,263
Sequoia | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		9,220,157	5,151,646
Carrying Value		$ 8,585,077	$ 4,568,660
Number of Series | series		54	42
Sequoia | Minimum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		2.66%	2.67%
Sequoia | Maximum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		8.52%	6.66%
Term at CAFL | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		$ 2,752,657	$ 2,987,825
Carrying Value		$ 2,687,977	$ 2,879,913
Number of Series | series		19	19
Term at CAFL | Minimum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		2.76%	2.69%
Term at CAFL | Maximum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		7.89%	7.89%
Freddie Mac SLST Securitization Entities | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		$ 1,075,249	$ 1,147,111
Carrying Value		$ 1,005,945	$ 1,088,225
Weighted Average Interest Rate		3.50%	3.50%
Number of Series | series		2	2
Freddie Mac K-Series Securitization Entities | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		$ 393,762	$ 402,400
Carrying Value		$ 389,434	$ 391,977
Weighted Average Interest Rate		3.41%	3.55%
Number of Series | series		1	1
Point HEI | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		$ 212,484	$ 233,131
Carrying Value		$ 211,097	$ 222,488
Number of Series | series		2	2
Point HEI | Minimum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		3.96%	3.86%
Point HEI | Maximum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		6.71%	6.70%
ABS Issued at Amortized Cost | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		$ 392,952	$ 666,546
Carrying Value		390,674	660,617
CAFL | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		244,772	485,000
Carrying Value		$ 244,772	$ 483,065
Number of Series | series		2	2
CAFL | Minimum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		2.31%	2.34%
CAFL | Maximum | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Weighted Average Interest Rate		4.38%	4.36%
Freddie Mac SLST | Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Debt Instrument [Line Items]
Unpaid Principal Balance		$ 148,180	$ 181,546
Carrying Value		$ 145,902	$ 177,552
Weighted Average Interest Rate		7.50%	7.50%
Number of Series | series		1	1

[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, 2024 and 2023, assets of consolidated VIEs totaled $14,654,942 and $10,988,885, respectively. At December 31, 2024 and 2023, liabilities of consolidated VIEs totaled $13,620,239 and $10,096,308, respectively. See Note 15 for further discussion.