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Multi-family Loans, at Fair Value - Schedule of Preferred Equity and Mezzanine Loan Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total, at Fair Value	$ 68,647	$ 86,192
VIE, Not Primary Beneficiary
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Investment amount	72,313	90,485
Unrealized losses, net	(3,666)	(4,293)
Total, at Fair Value	$ 68,647	$ 86,192

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