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Multi-family Loans, at Fair Value - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Variable Interest Entity, Not Primary Beneficiary
Variable Interest Entity [Line Items]
Unrealized (losses) gains	$ (4.7)	$ 1.1	$ (2.7)

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- Definition

Unrealized Gain (Loss) Loans

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 810
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