Home Equity Investments (HEI) - Schedule of Activity of Home Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Fair value of HEI purchased and originated | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation gains (losses) recorded	$ 391	$ 4,226	$ 3,003	$ 6,060
Fair value of HEI purchased and originated | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation gains (losses) recorded	0	0	0	0
Net market valuation gains (losses) recorded | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation gains (losses) recorded	3,325	(14,306)	8,434	(7,170)
Net market valuation gains (losses) recorded | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation gains (losses) recorded	$ 470	$ 8,621	$ 7,857	$ 20,533