Residential Loans and Residential Loans Held for Sale, at Fair Value - Schedule of Components of Net Gain (Loss) on Residential Mortgage Loans at Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Consolidated SLST \| VIE, Primary Beneficiary
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Unrealized gains (losses), net	$ 41,170	$ 8,611	$ (8,086)
Residential loans
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Unrealized gains (losses), net	20,885	16,968	6,786
Residential loans held in securitization trusts
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Unrealized gains (losses), net	$ 43,290	$ (15,683)	$ 63,005

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details