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Commercial Mortgage Loans, Subordinate Loans and Other Lending Assets, Net - Cost Recovery Loans (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Specific CECL allowance | $ 335,000 |  | $ 193,000
Amortized cost | $ 556,000 |  | $ 693,700
Equity contribution rate | 90.00% |  |
Turner Consulting |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Equity contribution rate | 10.00% |  |
Retail Center - Cincinnati, OH |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Payment in kind interest | $ 600 | $ 700 |
Retail Center - Cincinnati, OH | Capitalization Rate |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Loan collateral, measurement input | 0.090 |  |
Residential-for-Sale - Manhattan, NY | Discount Rate |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Loan collateral, measurement input | 0.10 |  |
Mortgage, Amortized cost |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Amortized cost prior to Specific CECL Allowance | $ 166,301 |  |
Specific CECL allowance | 67,000 |  |
Amortized cost | 99,301 |  |
Mortgage, Amortized cost | Retail Center - Cincinnati, OH |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Amortized cost prior to Specific CECL Allowance | 166,301 |  |
Specific CECL allowance | 67,000 |  |
Amortized cost | 99,301 |  |
Mezzanine Loans |  |  |
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 | 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 |  |
Real Estate and Mezzanine |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Amortized cost prior to Specific CECL Allowance | 462,182 |  |
Specific CECL allowance | 335,000 |  |
Amortized cost | $ 127,182 |  |

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