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MORTGAGE LOANS AND NOTES PAYABLE - Summary (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Mortgage loans and Notes payable |  |
Total mortgage loans and notes payable | $ 94,788 | $ 128,186
Net book value of self-storage facilities | 5,877,678 | 5,951,236
Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value | 89,279 | 121,368
Plus: Unamortized fair value adjustment | 6,154 | 7,689
Less: Loan procurement costs, net | (645) | (871)
Total mortgage loans and notes payable | 94,788 | 128,186
Net book value of self-storage facilities | $ 234,000 | 356,100
Annapolis I, MD | Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 4,703
Effective interest rate (as a percent) | 3.78% |
Brooklyn XV, NY | Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 14,746
Effective interest rate (as a percent) | 2.15% |
Long Island City IV, NY | Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value |  | 11,946
Effective interest rate (as a percent) | 2.15% |
Long Island City II, NY | Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value | $ 17,488 | 17,834
Effective interest rate (as a percent) | 2.25% |
Long Island City III, NY | Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value | $ 17,491 | 17,839
Effective interest rate (as a percent) | 2.25% |
Flushing II, NY | Mortgage Loans |  |
Mortgage loans and Notes payable |  |
Carrying value | $ 54,300 | $ 54,300
Effective interest rate (as a percent) | 2.15% |

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