Fair Value of Financial Instruments - Schedule of Fair Value Methodology for Level 3 Financial Instruments (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2024 USD ($) $ / loan securitization_entity		Dec. 31, 2023 USD ($)		Dec. 31, 2022 USD ($)
Assets, Fair Value Disclosure [Abstract]
Other assets | $	[1]	$ 415,717		$ 379,571
Total Assets | $		18,258,344	[1]	14,504,327	[1]	$ 13,030,899
Liabilities
Total Liabilities | $	[1]	$ 17,070,481		13,301,634
Securitization entity | securitization_entity		2
Variable Interest Entity, Primary Beneficiary
Assets, Fair Value Disclosure [Abstract]
Total Assets | $		$ 14,654,942		10,988,885
Liabilities
Total Liabilities | $		13,620,239		10,096,308
Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities
Assets, Fair Value Disclosure [Abstract]
Other assets | $		68,176		24,443
Total Assets | $		14,654,942		10,988,885
Liabilities
Total Liabilities | $		13,620,239		10,096,308
Variable Interest Entity, Primary Beneficiary | Collateralized Financing Entities | Point
Liabilities
Fair value of securities owned | $		47,000
Level 3
Assets, Fair Value Disclosure [Abstract]
Total Assets | $		17,391,480
Liabilities
Total Liabilities | $		12,979,536
Level 3 | ABS Issued
Liabilities
ABS issued | $		12,879,530
Level 3 | Other Liabilities
Liabilities
Other liabilities | $		496
Level 3 | Noncontrolling Interest
Liabilities
Non-controlling interests (7) | $		$ 99,510
Level 3 | Minimum | Whole loan discount rate | ABS Issued
Liabilities
ABS issued, measurement input		0.04
Level 3 | Minimum | Whole loan discount rate | Noncontrolling Interest
Liabilities
Non-controlling interest, measurement input		0.13
Level 3 | Minimum | Prepayment rate (Annual CPR) | ABS Issued
Liabilities
ABS issued, measurement input		0
Level 3 | Minimum | Default rate | ABS Issued
Liabilities
ABS issued, measurement input		0
Level 3 | Minimum | Loss severity | ABS Issued
Liabilities
ABS issued, measurement input		0
Level 3 | Maximum | Whole loan discount rate | ABS Issued
Liabilities
ABS issued, measurement input		0.45
Level 3 | Maximum | Whole loan discount rate | Noncontrolling Interest
Liabilities
Non-controlling interest, measurement input		0.20
Level 3 | Maximum | Prepayment rate (Annual CPR) | ABS Issued
Liabilities
ABS issued, measurement input		1
Level 3 | Maximum | Default rate | ABS Issued
Liabilities
ABS issued, measurement input		0.24
Level 3 | Maximum | Loss severity | ABS Issued
Liabilities
ABS issued, measurement input		0.50
Level 3 | Weighted Average | Whole loan discount rate | ABS Issued
Liabilities
ABS issued, measurement input		0.07
Level 3 | Weighted Average | Whole loan discount rate | Noncontrolling Interest
Liabilities
Non-controlling interest, measurement input		0.16
Level 3 | Weighted Average | Prepayment rate (Annual CPR) | ABS Issued
Liabilities
ABS issued, measurement input		0.03
Level 3 | Weighted Average | Default rate | ABS Issued
Liabilities
ABS issued, measurement input		0.05
Level 3 | Weighted Average | Loss severity | ABS Issued
Liabilities
ABS issued, measurement input		0.20
Residential Consumer Loans | Level 3
Assets, Fair Value Disclosure [Abstract]
Loans receivable, fair value | $		$ 11,077,823
Residential Consumer Loans | Level 3 | Minimum | Senior Credit Spread to TBA Price
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.63
Residential Consumer Loans | Level 3 | Minimum | Senior Credit Spread to Swap Rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.0150
Residential Consumer Loans | Level 3 | Minimum | Subordinate credit spread to Swap rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.0185
Residential Consumer Loans | Level 3 | Minimum | Senior Credit Support
Assets, Fair Value Disclosure [Abstract]
Loan purchase commitments, net, measurement inputs		0.07
Residential Consumer Loans | Level 3 | Minimum | IO Discount Rate
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		0.28
Residential Consumer Loans | Level 3 | Minimum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		34
Residential Consumer Loans | Level 3 | Maximum | Senior Credit Spread to TBA Price
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		1.25
Residential Consumer Loans | Level 3 | Maximum | Senior Credit Spread to Swap Rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.0170
Residential Consumer Loans | Level 3 | Maximum | Subordinate credit spread to Swap rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.0600
Residential Consumer Loans | Level 3 | Maximum | Senior Credit Support
Assets, Fair Value Disclosure [Abstract]
Loan purchase commitments, net, measurement inputs		0.10
Residential Consumer Loans | Level 3 | Maximum | IO Discount Rate
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		0.28
Residential Consumer Loans | Level 3 | Maximum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		103
Residential Consumer Loans | Level 3 | Weighted Average | Senior Credit Spread to TBA Price
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.68
Residential Consumer Loans | Level 3 | Weighted Average | Senior Credit Spread to Swap Rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.0151
Residential Consumer Loans | Level 3 | Weighted Average | Subordinate credit spread to Swap rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-sale, measurement input		0.0274
Residential Consumer Loans | Level 3 | Weighted Average | Senior Credit Support
Assets, Fair Value Disclosure [Abstract]
Loan purchase commitments, net, measurement inputs		0.07
Residential Consumer Loans | Level 3 | Weighted Average | IO Discount Rate
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		0.28
Residential Consumer Loans | Level 3 | Weighted Average | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		94
Residential Investor Term Loans | Level 3
Assets, Fair Value Disclosure [Abstract]
Loans receivable, fair value | $		$ 2,643,706
Residential Investor Term Loans | Level 3 | Minimum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		91
Residential Investor Term Loans | Level 3 | Minimum | Whole loan spread
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.0243
Residential Investor Term Loans | Level 3 | Maximum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		102
Residential Investor Term Loans | Level 3 | Maximum | Whole loan spread
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.0243
Residential Investor Term Loans | Level 3 | Weighted Average | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		94
Residential Investor Term Loans | Level 3 | Weighted Average | Whole loan spread
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.0243
Residential Investor Bridge Loans Held-for-Investment | Level 3
Assets, Fair Value Disclosure [Abstract]
Loans receivable, fair value | $		$ 1,943,384
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Minimum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		100
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Minimum | Whole loan spread
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.0445
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Minimum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.09
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Minimum | Dollar price of non-performing loans
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		29
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Maximum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		138
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Maximum | Whole loan spread
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.0445
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Maximum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.12
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Maximum | Dollar price of non-performing loans
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		100
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Weighted Average | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		122
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Weighted Average | Whole loan spread
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.0445
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Weighted Average | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		0.10
Residential Investor Bridge Loans Held-for-Investment | Level 3 | Weighted Average | Dollar price of non-performing loans
Assets, Fair Value Disclosure [Abstract]
Loans held-for-investment, measurement input		79
Consolidated Agency Multifamily Loans | Level 3
Assets, Fair Value Disclosure [Abstract]
Loans receivable, fair value | $		$ 424,597
Consolidated Agency Multifamily Loans | Level 3 | Minimum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		99
Consolidated Agency Multifamily Loans | Level 3 | Maximum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		99
Consolidated Agency Multifamily Loans | Level 3 | Weighted Average | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		99
Trading and AFS securities | Level 3
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities | $		$ 405,223
Trading and AFS securities | Level 3 | Minimum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.06
Trading and AFS securities | Level 3 | Minimum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0
Trading and AFS securities | Level 3 | Minimum | Default rate
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0
Trading and AFS securities | Level 3 | Minimum | Loss severity
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.25
Trading and AFS securities | Level 3 | Maximum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.40
Trading and AFS securities | Level 3 | Maximum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.27
Trading and AFS securities | Level 3 | Maximum | Default rate
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.10
Trading and AFS securities | Level 3 | Maximum | Loss severity
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.50
Trading and AFS securities | Level 3 | Weighted Average | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.12
Trading and AFS securities | Level 3 | Weighted Average | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.08
Trading and AFS securities | Level 3 | Weighted Average | Default rate
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.001
Trading and AFS securities | Level 3 | Weighted Average | Loss severity
Assets, Fair Value Disclosure [Abstract]
Trading and AFS securities, measurement input		0.24
HEI | Level 3
Assets, Fair Value Disclosure [Abstract]
HEI | $		$ 589,785
HEI | Level 3 | Minimum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		138
HEI | Level 3 | Minimum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.10
HEI | Level 3 | Minimum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.01
HEI | Level 3 | Minimum | Home price appreciation (depreciation)
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.04
HEI | Level 3 | Maximum | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		191
HEI | Level 3 | Maximum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.10
HEI | Level 3 | Maximum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.20
HEI | Level 3 | Maximum | Home price appreciation (depreciation)
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.04
HEI | Level 3 | Weighted Average | Liability Price
Assets, Fair Value Disclosure [Abstract]
Loans receivable, measurement input		157
HEI | Level 3 | Weighted Average | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.10
HEI | Level 3 | Weighted Average | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.14
HEI | Level 3 | Weighted Average | Home price appreciation (depreciation)
Assets, Fair Value Disclosure [Abstract]
HEI, measurement input		0.04
Servicer advance investments | Level 3
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments | $		$ 233,820
Servicer advance investments | Level 3 | Minimum
Assets, Fair Value Disclosure [Abstract]
Expected remaining life, measurement input		5 years
Servicer advance investments | Level 3 | Minimum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.12
Servicer advance investments | Level 3 | Minimum | Mortgage servicing amount
Assets, Fair Value Disclosure [Abstract]
Loan purchase commitments, net, measurement inputs		0.0001
Servicer advance investments | Level 3 | Maximum
Assets, Fair Value Disclosure [Abstract]
Expected remaining life, measurement input		5 years
Servicer advance investments | Level 3 | Maximum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.30
Servicer advance investments | Level 3 | Maximum | Mortgage servicing amount
Assets, Fair Value Disclosure [Abstract]
Loan purchase commitments, net, measurement inputs		0.0058
Servicer advance investments | Level 3 | Weighted Average
Assets, Fair Value Disclosure [Abstract]
Expected remaining life, measurement input		5 years
Servicer advance investments | Level 3 | Weighted Average | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.14
Servicer advance investments | Level 3 | Weighted Average | Mortgage servicing amount
Assets, Fair Value Disclosure [Abstract]
Loan purchase commitments, net, measurement inputs		0.0009
Excess MSRs & MSRs | Level 3
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments | $		$ 63,863
Excess MSRs & MSRs | Level 3 | Minimum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.09
Excess MSRs & MSRs | Level 3 | Minimum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.02
Excess MSRs & MSRs | Level 3 | Maximum | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.46
Excess MSRs & MSRs | Level 3 | Maximum | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.48
Excess MSRs & MSRs | Level 3 | Weighted Average | Whole loan discount rate
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.14
Excess MSRs & MSRs | Level 3 | Weighted Average | Prepayment rate (Annual CPR)
Assets, Fair Value Disclosure [Abstract]
Servicer advance investments, measurement input		0.11
Residential loan purchase commitments, net | Level 3
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net | $		$ 5,272
Residential loan purchase commitments, net | Level 3 | Minimum | Senior Credit Spread to TBA Price
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.63
Residential loan purchase commitments, net | Level 3 | Minimum | Senior Credit Spread to Swap Rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.0150
Residential loan purchase commitments, net | Level 3 | Minimum | Subordinate credit spread to Swap rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.0185
Residential loan purchase commitments, net | Level 3 | Minimum | Senior Credit Support
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.07
Residential loan purchase commitments, net | Level 3 | Minimum | IO Discount Rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.28
Residential loan purchase commitments, net | Level 3 | Minimum | Pull-through rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.12
Residential loan purchase commitments, net | Level 3 | Maximum | Senior Credit Spread to TBA Price
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		1.25
Residential loan purchase commitments, net | Level 3 | Maximum | Senior Credit Spread to Swap Rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.0170
Residential loan purchase commitments, net | Level 3 | Maximum | Subordinate credit spread to Swap rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.0600
Residential loan purchase commitments, net | Level 3 | Maximum | Senior Credit Support
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.10
Residential loan purchase commitments, net | Level 3 | Maximum | IO Discount Rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.28
Residential loan purchase commitments, net | Level 3 | Maximum | Pull-through rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		1
Residential loan purchase commitments, net | Level 3 | Weighted Average | Senior Credit Spread to TBA Price
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.68
Residential loan purchase commitments, net | Level 3 | Weighted Average | Senior Credit Spread to Swap Rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.0151
Residential loan purchase commitments, net | Level 3 | Weighted Average | Subordinate credit spread to Swap rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.0274
Residential loan purchase commitments, net | Level 3 | Weighted Average | Senior Credit Support
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.07
Residential loan purchase commitments, net | Level 3 | Weighted Average | IO Discount Rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.28
Residential loan purchase commitments, net | Level 3 | Weighted Average | Pull-through rate
Assets, Fair Value Disclosure [Abstract]
Residential loan purchase commitments, net, measurement input		0.73
Strategic investments | Level 3
Assets, Fair Value Disclosure [Abstract]
Strategic investments | $		$ 3,460
Strategic investments | Level 3 | Minimum | Transaction price
Assets, Fair Value Disclosure [Abstract]
Strategic investments, measurement input		200
Strategic investments | Level 3 | Maximum | Transaction price
Assets, Fair Value Disclosure [Abstract]
Strategic investments, measurement input		1,000
Strategic investments | Level 3 | Weighted Average | Transaction price
Assets, Fair Value Disclosure [Abstract]
Strategic investments, measurement input		494
Other Assets | Level 3
Assets, Fair Value Disclosure [Abstract]
Other assets | $		$ 547
Sequoia Choice Securitization Entities
Liabilities
Fair value of securities owned | $		419,000
CAFL Securitization Entities
Liabilities
Fair value of securities owned | $		326,000		323,000
CAFL Bridge Loan Securitization
Liabilities
Fair value of securities owned | $		29,000		22,000
Freddie Mac SLST Securitization Entities
Liabilities
Fair value of securities owned | $		242,000		$ 274,000
Freddie Mac K-Series Securitization Entities
Liabilities
Fair value of securities owned | $		$ 35,000

[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.