Home Equity Investments (HEI) - Schedule of Components of HEI Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Schedule of Equity Method Investments [Line Items]
Total HEI income (loss), net	$ 2,798	$ (12,899)	$ 9,907	$ (2,733)
Interest expense	353,153	270,502	675,355	514,654
Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Total HEI income (loss), net	3,325	(14,306)	8,434	(7,170)
Securitized HEI
Schedule of Equity Method Investments [Line Items]
Total HEI income (loss), net	470	8,621	7,857	20,533
Net market valuation (losses) recorded on ABS Issued from HEI securitizations
Schedule of Equity Method Investments [Line Items]
Total HEI income (loss), net	(1,971)	(5,262)	(4,178)	(9,031)
Interest expense	2,000	3,000	4,000	6,000
Net market valuation gains (losses) recorded on non-controlling interests in HEI securitizations
Schedule of Equity Method Investments [Line Items]
Total HEI income (loss), net	952	(2,133)	(2,334)	(7,342)
Other
Schedule of Equity Method Investments [Line Items]
Total HEI income (loss), net	$ 22	$ 181	$ 128	$ 277