Home Equity Investments (HEI) - Schedule of Components of HEI Income, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	$ 41,831	$ 35,117	$ 2,714
Interest expense	842,556	631,519	552,400
HEI at Redwood
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	28,739	30,750	(201)
Securitized HEI
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	57,948	23,177	5,875
ABS Issued from HEI Securitization
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	(21,686)	(11,020)	2,334
Interest expense	12,000	6,000	5,000
Non-controlling in HEI Securitizations
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	$ (23,170)	$ (7,790)	$ (5,294)