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COMMERCIAL LOANS AND INVESTMENTS - Summary of Commercial Loan Investments (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  | 9 Months Ended | 12 Months Ended |  |  |
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Sep. 27, 2024 USD ($) | Jul. 11, 2024 USD ($) $ / shares shares | Apr. 18, 2024 USD ($) | Feb. 02, 2024 USD ($) | Dec. 20, 2023 USD ($) | Mar. 01, 2023 USD ($) | Feb. 21, 2023 USD ($) | Apr. 07, 2022 USD ($) item | Sep. 30, 2024 USD ($) $ / shares | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) $ / shares | Sep. 25, 2024 USD ($) | Mar. 26, 2024 USD ($) location | Mar. 31, 2023 USD ($)
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | $ 104,856 |  | $ 69,500 |  |  |
Current Face Amount |  |  |  |  |  |  |  |  | 104,856 |  | 62,657 |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | 104,063 |  | 62,476 |  |  |
Carrying Value |  |  |  |  |  |  |  |  | 103,014 |  | 61,849 |  |  |
CECL Reserve |  |  |  |  |  |  |  |  | $ (1,049) |  | $ (627) |  |  |
Dividend Rate |  |  |  |  |  |  |  |  | 6.375% |  | 6.375% |  |  |
Preferred Stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.01 |  | $ 0.01 |  |  |
Mortgage Note - 4311 Maple Avenue, Dallas, TX |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Remaining commitment |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0
Amount repaid by borrower |  |  |  |  |  |  | $ 400 |  |  |  |  |  |  |
Mortgage Note - Founders Square - Dallas, TX |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | $ 15,000 |  | $ 15,000 |  |  |
Current Face Amount |  |  |  |  |  | $ 15,000 |  |  | 15,000 |  | 15,000 |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | $ 14,930 |  | $ 14,892 |  |  |
Coupon Rate |  |  |  |  |  | 8.75% |  |  | 8.75% |  | 8.75% |  |  |
Interest-only term (in years) |  |  |  |  |  | 3 years |  |  |  |  |  |  |  |
Origination fee (as percentage) |  |  |  |  |  | 1.00% |  |  |  |  |  |  |  |
Fee income |  |  |  |  |  | $ 150 |  |  |  |  |  |  |  |
Promissory Note - Main Street - Daytona Beach, FL |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | $ 400 |  | $ 400 |  |  |
Current Face Amount |  |  |  |  |  |  |  |  | 400 |  | 400 |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | $ 400 |  | $ 400 |  |  |
Coupon Rate |  |  |  |  |  |  |  |  | 7.00% |  | 7.00% |  |  |
Mortgage Note - Sabal Pavilion - Tampa, FL |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  |  |  | $ 15,400 |  |  |
Current Face Amount |  |  |  |  | $ 15,400 |  |  |  |  |  | 15,400 |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  |  |  | $ 15,393 |  |  |
Coupon Rate |  |  |  |  | 7.50% |  |  |  |  |  | 7.50% |  |  |
Interest-only term (in years) |  |  |  |  | 9 months |  |  |  |  |  |  |  |  |
Discount on repayment of mortgage loan |  |  | $ 200 |  |  |  |  |  | $ 200 |  |  |  |  |
Amount repaid by borrower |  |  | $ 15,200 |  |  |  |  |  | 15,200 |  |  |  |  |
Construction Loan - Hypoluxo Project - Lake Worth, FL |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of outparcel locations | location |  |  |  |  |  |  |  |  |  |  |  |  | 7 |
Original Face Amount |  |  |  |  |  |  |  |  |  |  |  | $ 5,600 | $ 10,000 |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 11.00% |
Construction Loan - Hypoluxo - Atlanta, GA |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | 5,638 |  |  |  |  |
Current Face Amount |  |  |  |  |  |  |  |  | 5,638 |  |  |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | $ 5,575 |  |  |  |  |
Coupon Rate |  |  |  |  |  |  |  |  | 11.00% |  |  |  |  |
Construction Loan - The Exchange At Gwinnett - Buford, GA |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  |  |  | $ 8,700 |  |  |
Current Face Amount |  |  |  |  |  |  |  |  |  |  | 1,857 |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  |  |  | $ 1,854 |  |  |
Coupon Rate |  |  |  |  |  |  |  |  |  |  | 7.25% |  |  |
Loan origination |  |  |  |  |  |  |  |  |  | $ 2,200 |  |  |  |
Remaining commitment |  |  |  |  |  |  |  |  |  | 0 |  |  |  |
Amount repaid by borrower |  |  |  |  |  |  |  |  |  | $ 600 |  |  |  |
Construction Loan - The Exchange At Gwinnett - Buford, GA | Gwinnett project located in Buford, GA |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan origination |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |
Remaining commitment |  |  |  |  |  |  |  |  | 0 |  |  |  |  |
Amount repaid by borrower |  |  |  | $ 1,900 |  |  |  |  |  |  |  |  |  |
Preferred Investment - Watters Creek - Allen, TX |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | 30,000 |  | $ 30,000 |  |  |
Current Face Amount |  |  |  |  |  |  |  | $ 30,000 | 30,000 |  | 30,000 |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | $ 29,974 |  | $ 29,937 |  |  |
Coupon Rate |  |  |  |  |  |  |  | 8.50% | 9.00% |  | 8.75% |  |  |
Origination fee |  |  |  |  |  |  |  | $ 150 |  |  |  |  |  |
Percentage of funding towards total investment (as a percent) |  |  |  |  |  |  |  | 23.00% |  |  |  |  |  |
Mortgage Loans On Real Estate, Extension Term, Number of Option | item |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Mortgage Loans On Real Estate, Extension Term |  |  |  |  |  |  |  | 1 year |  |  |  |  |  |
Series A preferred stock investment |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | $ 10,000 |  |  |  |  |
Current Face Amount |  | $ 10,000 |  |  |  |  |  |  | 10,000 |  |  |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | $ 9,904 |  |  |  |  |
Coupon Rate |  |  |  |  |  |  |  |  | 14.00% |  |  |  |  |
Origination fee (as percentage) |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |
Fee income |  | $ 100 |  |  |  |  |  |  |  |  |  |  |  |
Series A preferred stock investment | Series A preferred stock |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares acquired in exchange of escrow deposit | shares |  | 10,000 |  |  |  |  |  |  |  |  |  |  |  |
Dividend Rate |  | 14.00% |  |  |  |  |  |  |  |  |  |  |  |
Preferred Stock, par value (in dollars per share) | $ / shares |  | $ 0.01 |  |  |  |  |  |  |  |  |  |  |  |
Mortgage Note Rivana at Innovation Station Property, Herndon, Virginia |  |  |  |  |  |  |  |  |  |  |  |  |  |
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Original Face Amount |  |  |  |  |  |  |  |  | $ 43,818 |  |  |  |  |
Current Face Amount | $ 43,800 |  |  |  |  |  |  |  | 43,818 |  |  |  |  |
Carrying Value before CECL |  |  |  |  |  |  |  |  | $ 43,280 |  |  |  |  |
Coupon Rate | 11.00% |  |  |  |  |  |  |  | 11.00% |  |  |  |  |
Interest-only term (in years) | 2 years |  |  |  |  |  |  |  |  |  |  |  |  |
Origination fee (as percentage) | 1.25% |  |  |  |  |  |  |  |  |  |  |  |  |
Fee income | $ 500 |  |  |  |  |  |  |  |  |  |  |  |  |

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