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SELF STORAGE PROPERTIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Real Estate [Abstract] |  |  |  |  |
Land | $ 1,038,820 |  | $ 1,038,820 |  | $ 1,047,416
Buildings and improvements | 4,790,629 |  | 4,790,629 |  | 4,804,789
Furniture and equipment | 12,337 |  | 12,337 |  | 11,929
Total self storage properties | 5,841,786 |  | 5,841,786 |  | 5,864,134
Less accumulated depreciation | (1,175,690) |  | (1,175,690) |  | (1,051,638)
Self storage properties, net | 4,666,096 |  | 4,666,096 |  | $ 4,812,496
Depreciation expense related to self storage properties | $ 44,500 | $ 45,400 | $ 134,700 | $ 136,200 |

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- Definition The cumulative amount of depreciation for real estate property held for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(d)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)(6)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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