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NONCONTROLLING INTERESTS - Interests in Consolidated Real Estate Joint Ventures (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 USD ($) facility | Dec. 31, 2023 USD ($)
Variable Interest Entity [Line Items] |  |
Total assets | $ 6,208,888 | $ 6,225,020
Total liabilities | $ 3,346,849 | $ 3,344,212
VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 8 |
Total assets | $ 184,382 |
Total liabilities | 94,484 |
Carrying amount of mortgage loans | $ 89,845 |
New Rochelle Investors LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 70.00% |
Total assets | $ 24,855 |
Total liabilities | 1,253 |
Carrying amount of mortgage loans | $ 599 |
1074 Raritan Road, LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 90.00% |
Total assets | $ 14,141 |
Total liabilities | 7,931 |
Carrying amount of mortgage loans | $ 6,642 |
350 Main Street, LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 90.00% |
Total assets | $ 5,862 |
Total liabilities | $ 19 |
Astoria Investors, LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 70.00% |
Total assets | $ 43,338 |
Total liabilities | 28,937 |
Carrying amount of mortgage loans | $ 27,397 |
CS Vienna LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 80.00% |
Total assets | $ 30,200 |
Total liabilities | 35,325 |
Carrying amount of mortgage loans | $ 34,875 |
CS Valley Forge Village Storage LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 70.00% |
Total assets | $ 19,149 |
Total liabilities | 14,873 |
Carrying amount of mortgage loans | $ 14,792 |
SH3, LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 90.00% |
Total assets | $ 36,621 |
Total liabilities | $ 521 |
C S Lock Up Anoka LLC | VIE |  |
Variable Interest Entity [Line Items] |  |
Number of self-storage facilities owned and operated | facility | 1 |
Ownership interest held by the entity (as a percent) | 50.00% |
Total assets | $ 10,216 |
Total liabilities | 5,625 |
Carrying amount of mortgage loans | $ 5,540 |

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