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Summary of Significant Accounting Policies - Schedule of Notes Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2024 | Mar. 31, 2023 | Sep. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing receivable, carrying value |  |  | $ 123,045 |  |
MAXIMUM LOAN COMMITMENT |  |  | 214,969 |  |
Outstanding |  |  | 184,829 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 3,181 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | (63,159) | $ (5,196) | $ 0
FAIR VALUE DISCOUNT AND FEES |  |  | (3,143) |  |
CARRYING VALUE |  |  | 121,708 |  |
Credit loss reserves |  | $ 5,200 | 57,963 | $ 5,196 |
Mezzanine loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
MAXIMUM LOAN COMMITMENT |  |  | 60,119 |  |
Outstanding |  |  | 60,119 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 942 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | (51,958) |  |
FAIR VALUE DISCOUNT AND FEES |  |  | (3,067) |  |
CARRYING VALUE |  |  | 6,036 |  |
Mortgage loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
MAXIMUM LOAN COMMITMENT |  |  | 154,850 |  |
Outstanding |  |  | 124,710 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 2,239 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | (11,201) |  |
FAIR VALUE DISCOUNT AND FEES |  |  | (76) |  |
CARRYING VALUE |  |  | $ 115,672 |  |
Poway, CA |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 5.71% |  |
Financing receivable, carrying value |  |  | $ 115,683 |  |
Columbus, OH |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 6.48% |  |
Financing receivable, carrying value |  |  | $ 7,362 |  |
Texas | Mezzanine loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 8.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 54,119 |  |
Outstanding |  |  | 54,119 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 906 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | (51,958) |  |
FAIR VALUE DISCOUNT AND FEES |  |  | (3,067) |  |
CARRYING VALUE |  |  | $ 0 |  |
Texas | Mortgage loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 7.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 31,150 |  |
Outstanding |  |  | 31,150 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 551 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | (11,201) |  |
FAIR VALUE DISCOUNT AND FEES |  |  | 0 |  |
CARRYING VALUE |  |  | $ 20,500 |  |
Credit loss reserves | $ 11,200 |  |  |  |
Allowance for credit loss | 10,700 |  |  |  |
Allowance for credit loss, interest | $ 500 |  |  |  |
Arizona | Mezzanine loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 9.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 6,000 |  |
Outstanding |  |  | 6,000 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 36 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | 0 |  |
FAIR VALUE DISCOUNT AND FEES |  |  | 0 |  |
CARRYING VALUE |  |  | $ 6,036 |  |
North Carolina | Mortgage loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 8.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 6,000 |  |
Outstanding |  |  | 6,000 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 1,332 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | 0 |  |
FAIR VALUE DISCOUNT AND FEES |  |  | (47) |  |
CARRYING VALUE |  |  | $ 7,285 |  |
Florida | Mortgage loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 6.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 65,000 |  |
Outstanding |  |  | 35,721 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 179 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | 0 |  |
FAIR VALUE DISCOUNT AND FEES |  |  | (29) |  |
CARRYING VALUE |  |  | $ 35,871 |  |
California | Mortgage loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 6.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 45,000 |  |
Outstanding |  |  | 45,000 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 177 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | 0 |  |
FAIR VALUE DISCOUNT AND FEES |  |  | 0 |  |
CARRYING VALUE |  |  | $ 45,177 |  |
Florida | Mortgage loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
INTEREST RATE |  |  | 9.00% |  |
MAXIMUM LOAN COMMITMENT |  |  | $ 7,700 |  |
Outstanding |  |  | 6,839 |  |
INTEREST RECEIVABLE (OTHER ASSETS) |  |  | 0 |  |
ALLOWANCE FOR CREDIT LOSSES |  |  | 0 |  |
FAIR VALUE DISCOUNT AND FEES |  |  | 0 |  |
CARRYING VALUE |  |  | $ 6,839 |  |

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