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Mortgage Banking Activities, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Other income, net	$ (183)	$ 880	$ 1,719	$ 1,142
Total Mortgage banking activities, net	40,132	39,569	114,042	73,049
Sequoia Mortgage Banking
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Other income, net	655	335	1,665	1,764
Total Mortgage banking activities, net	28,719	26,715	75,266	40,787
Sequoia Mortgage Banking | Residential consumer loans, at fair value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	54,872	20,959	100,566	31,410
Sequoia Mortgage Banking | Trading securities
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	(24,382)	(28,630)	(92,354)	(17,508)
Sequoia Mortgage Banking | Risk management derivatives
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Risk management derivatives	(2,426)	34,051	65,389	25,121
CoreVest Mortgage Banking
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Other income, net	7,074	5,548	20,180	14,989
Total Mortgage banking activities, net	11,413	12,854	38,776	32,262
CoreVest Mortgage Banking | Residential investor term loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	3,291	6,061	14,781	11,833
CoreVest Mortgage Banking | Residential investor bridge loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	1,030	694	5,635	2,748
CoreVest Mortgage Banking | Risk management derivatives
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Risk management derivatives	$ 18	$ 551	$ (1,820)	$ 2,692

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The net income attributable to mortgage banking activities. This includes market valuations related to residential and commercial loans, Sequoia IOs, and mortgage banking derivatives, as well as realized gains or losses associated with mortgage loan sales.

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