Residential Investor Loans - Schedule of Activity of Residential Investor Loans at Redwood (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2025 USD ($) securitization	Dec. 31, 2024 USD ($) securitization	Dec. 31, 2023 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans originated	$ 14,583,332	$ 7,107,623	$ 2,046,299
Principal balance of loans sold to third parties	$ 15,881	$ 8,526	$ 1,122
Number of loans transferred | securitization	1	1
Cedarline
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Payments to acquire residential investor bridge loan	$ 147,000
Construction loan	123,000
Proceeds from sale of loans	24,000
Residential Investor Term, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans originated	855,852	$ 720,537
Principal balance of loans acquired	43,764	19,246
Principal balance of loans sold to third parties	827,982	713,314
Transfers of loans between portfolios	0	0
Consolidation of securitized CAFL bridge loans	0	298,553
Residential Investor Bridge, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans originated	881,292	967,811
Principal balance of loans acquired	147,102	15,677
Principal balance of loans sold to third parties	1,392,602	516,411
Transfers of loans between portfolios	219,322	(290,159)
Consolidation of securitized CAFL bridge loans	805,008	0
Residential Investor Bridge Loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Principal balance of loans sold to third parties	$ 88,000	$ 49,000