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INVESTMENT ACTIVITY - Accounting for LAACO acquisition (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 09, 2021
--- | --- | --- | --- | ---
Significant Acquisitions and Disposals [Line Items] |  |  |  |
Storage facilities, net | $ 5,951,236 | $ 6,048,003 | $ 6,097,670 |
Cash and cash equivalents | 6,526 | 6,064 |  |
Investment in real estate ventures, at equity | 98,288 | 105,993 |  |
Assets held for sale |  | 3,745 |  |
Other assets, net | 163,284 | 153,982 |  |
Accounts payable, accrued expenses and other liabilities | (201,419) | (214,384) |  |
Deferred revenue | $ (38,483) | (38,757) |  |
Liabilities held for sale |  | $ (1,773) |  |
LAACO | 2021 Acquisitions |  |  |  |
Significant Acquisitions and Disposals [Line Items] |  |  |  |
Storage facilities, net |  |  |  | $ 1,517,243
Cash and cash equivalents |  |  |  | 18,291
Investment in real estate ventures, at equity |  |  |  | 35,737
Assets held for sale |  |  |  | 50,435
Other assets, net |  |  |  | 143,599
Accounts payable, accrued expenses and other liabilities |  |  |  | (38,350)
Deferred revenue |  |  |  | (3,764)
Security deposits |  |  |  | (36)
Liabilities held for sale |  |  |  | (3,635)
Total |  |  |  | $ 1,719,520

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