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Multi-family Loans, at Fair Value - Preferred Equity and Mezzanine Loan Investments (Details) - Variable Interest Entity, Not Primary Beneficiary - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity [Line Items]
Investment amount	$ 95,434	$ 88,249
Unrealized gains (losses)	358	(715)
Total, at Fair Value	$ 95,792	$ 87,534

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Amount of investments classified as other.

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