Home Equity Investments (HEI) - Schedule of HEI Characteristics (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) Contract	Dec. 31, 2022 USD ($) Contract	Dec. 31, 2021 USD ($)
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	$ 35,117	$ 2,714	$ 13,425
Interest expense	631,519	552,400	426,749
HEI at Redwood
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	30,750	(201)	13,207
Securitized HEI
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	23,177	5,875	567
ABS Issued From HEI Securitization
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	(11,020)	2,334	47
Interest expense	6,000	5,000	1,000
Non-controlling In HEI Securitizations
Schedule of Equity Method Investments [Line Items]
Total HEI income, net	$ (7,790)	$ (5,294)	$ (396)
HEI
Schedule of Equity Method Investments [Line Items]
Number of HEI contracts | Contract	2,034	2,599
Average initial amount of contract	$ 105	$ 101
Securitized Point Options
Schedule of Equity Method Investments [Line Items]
Number of HEI contracts | Contract	2,434	1,007
Average initial amount of contract	$ 96	$ 94