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SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE - Loans On Real Estate (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Face Amount of Notes Receivable |  | $ 127,237 |  |  |  |
Notes receivable | [1] | 126,228 |  |  |  |
Allowance for credit losses |  | (1,279) | [1] | $ (898) | $ (5,752) | $ (1,218)
Net carrying amount of notes receivable |  | 124,949 | [1] | $ 123,903 |  |
Principal amount of loans subject to delinquent principal or interest |  | $ 17,801 |  |  |  |
First Mortgage Loan, 6.00% Loan, Due 4/1/2020 |  |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Effective Interest Rate |  | 6.00% |  |  |  |
Face Amount of Notes Receivable |  | $ 17,810 |  |  |  |
Notes receivable | [1] | 17,801 |  |  |  |
Principal amount of loans subject to delinquent principal or interest |  | $ 17,801 |  |  |  |
Mezzanine Loan, 9.25% Loan, Due 1/9/2024 |  |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Effective Interest Rate |  | 9.25% |  |  |  |
Face Amount of Notes Receivable |  | $ 54,000 |  |  |  |
Notes receivable | [1] | $ 54,000 |  |  |  |
First Mortgage Loan, 6.56% Loan, Due 9/17/2024 |  |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Effective Interest Rate |  | 6.56% |  |  |  |
Face Amount of Notes Receivable |  | $ 43,000 |  |  |  |
Notes receivable | [1] | $ 42,000 |  |  |  |
Other, 6.50% Loan, Due 9/27/2024 |  |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Effective Interest Rate |  | 6.50% |  |  |  |
Face Amount of Notes Receivable |  | $ 1,427 |  |  |  |
Notes receivable | [1] | $ 1,427 |  |  |  |
Other, 4.65% Loan, Due 4/12/2026 |  |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Effective Interest Rate |  | 4.65% |  |  |  |
Face Amount of Notes Receivable |  | $ 6,000 |  |  |  |
Notes receivable | [1] | $ 6,000 |  |  |  |
Mezzanine Loan, 8.00% Loan, Due 12/11/2027 |  |  |  |  |  |
Mortgage Loans on Real Estate [Line Items] |  |  |  |  |  |
Effective Interest Rate |  | 8.00% |  |  |  |
Face Amount of Notes Receivable |  | $ 5,000 |  |  |  |
Notes receivable | [1] | $ 5,000 |  |  |  |
[1] | The aggregate carrying amount of notes receivable included above for Federal income tax purposes was approximately $126.2 million as of December 31, 2023.

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