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Residential Investor Loans - Schedule of Activity of Securitized Residential Investor Loans Held-for-Investment (Details) - Total Residential Investor Loans - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Residential Investor Term, Securitized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Net market valuation gains (losses) recorded	$ 20,614	$ 78,275	$ 34,667	$ 89,388
Fair value of loans transferred to HFI	0	0	0	0
Residential Investor Bridge, Securitized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Net market valuation gains (losses) recorded	6,384	1,623	(1,901)	443
Fair value of loans transferred to HFI	$ 38,179	$ 62,386	$ 164,792	$ 250,319

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Business Purpose Loans Held For Investment, Fair Value Of Loans Transfers

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