Home Equity Investments (HEI) - Schedule of Activity of Home Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Fair value of HEI purchased and originated | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	$ 2,612	$ 1,834
Fair value of HEI purchased and originated | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	0	0
Net market valuation gains recorded | Unsecuritized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	5,109	7,136
Net market valuation gains recorded | Securitized HEI
Schedule of Equity Method Investments [Line Items]
Net market valuation (losses) gains recorded	$ 7,386	$ 11,912