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Multi-family Loans, at Fair Value - Narrative (Details) - USD ($) | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
VIE, Not Primary Beneficiary |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items] |  |
Unrealized gains (losses) | $ 400,000 | $ (4,800,000)

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- Definition Unrealized Gain (Loss) Loans and Preferred Equity + References No definition available. + Details
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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 -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 29 -Publisher SEC Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 948 -SubTopic 310 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-29) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479628/948-310-S99-1 + Details
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