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Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Cost Recovery Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Specific CECL allowance	$ 30,836	$ 26,482
Mortgage, Amortized cost | Retail Center - Cincinnati, OH
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost prior to Specific CECL Allowance	164,339
Specific CECL allowance	67,000
Amortized cost	97,339
Mezzanine Loans | Residential-for-Sale - Manhattan, NY
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost prior to Specific CECL Allowance	295,881
Specific CECL allowance	268,000
Amortized cost	27,881
Mezzanine Loans | Office - Troy, MI
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost prior to Specific CECL Allowance	7,500
Specific CECL allowance	7,500
Amortized cost	0
Real Estate and Mezzanine
Financing Receivable, Credit Quality Indicator [Line Items]
Amortized cost prior to Specific CECL Allowance	467,720
Specific CECL allowance	342,500
Amortized cost	$ 125,220

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-Topic 326
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