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Investments in Unconsolidated Real Estate Entities (Details) $ in Thousands | 1 Months Ended |
--- | --- | ---
Sep. 30, 2024 USD ($) property joint_venture | Aug. 31, 2024 USD ($) store | May 31, 2023 USD ($) | Oct. 31, 2019 USD ($) | Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 460 |  |  |  |
Investment balance | $ 986,040 |  |  |  | $ 1,000,548
ESS Bristol Investments LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | store |  | 8 |  |  |
Number of stores sold | store |  | 5 |  |  |
Gain on sale of joint ventures |  | $ 10,324 |  |  |
PRISA Self Storage LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 85 |  |  |  |
Equity Ownership % | 4.00% |  |  |  |
Excess Profit % | 4.00% |  |  |  |
Investment balance | $ 9,110 |  |  |  | 9,435
HF1 Sovran HHF Storage Holdings LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 37 |  |  |  |
Equity Ownership % | 20.00% |  |  |  |
Excess Profit % | 20.00% |  |  |  |
Investment balance | $ 102,901 |  |  |  | 105,339
Storage Portfolio II JV LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 36 |  |  |  |
Equity Ownership % | 10.00% |  |  |  |
Excess Profit % | 30.00% |  |  |  |
Investment balance | $ (9,219) |  |  |  | (8,314)
Storage Portfolio IV JV LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 32 |  |  |  |
Equity Ownership % | 10.00% |  |  |  |
Excess Profit % | 30.00% |  |  |  |
Investment balance | $ 47,491 |  |  |  | 48,184
Storage Portfolio I LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 24 |  |  |  |
Equity Ownership % | 34.00% |  |  |  |
Excess Profit % | 49.00% |  |  |  |
Investment balance | $ (43,430) |  |  |  | (42,487)
PR II EXR JV LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 23 |  |  |  |
Equity Ownership % | 25.00% |  |  |  |
Excess Profit % | 25.00% |  |  |  |
Investment balance | $ 106,456 |  |  |  | 108,160
HF2 Sovran HHF Storage Holdings II LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 22 |  |  |  |
Equity Ownership % | 15.00% |  |  |  |
Excess Profit % | 15.00% |  |  |  |
Investment balance | $ 41,039 |  |  |  | 41,613
HF5 Life Storage-HIERS Storage LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 17 |  |  |  |
Equity Ownership % | 20.00% |  |  |  |
Excess Profit % | 20.00% |  |  |  |
Investment balance | $ 25,450 |  |  |  | 26,051
HF6 191 V Life Storage Holdings LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 17 |  |  |  |
Equity Ownership % | 20.00% |  |  |  |
Excess Profit % | 20.00% |  |  |  |
Investment balance | $ 11,315 |  |  |  | 12,702
ESS-CA TIVS JV LP |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 16 |  |  |  |
Equity Ownership % | 55.00% |  |  |  |
Investment balance | $ 27,794 |  |  |  | 29,128
ESS-CA TIVS JV LP | Minimum |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Excess Profit % | 55.00% |  |  |  |
ESS-CA TIVS JV LP | Maximum |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Excess Profit % | 65.00% |  |  |  |
VRS Self Storage, LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 16 |  |  |  |
Equity Ownership % | 45.00% |  |  |  |
Excess Profit % | 54.00% |  |  |  |
Investment balance | $ (17,312) |  |  |  | (16,386)
HF10 Life Storage HHF Wasatch Holdings LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 16 |  |  |  |
Equity Ownership % | 20.00% |  |  |  |
Excess Profit % | 20.00% |  |  |  |
Investment balance | $ 19,581 |  |  |  | 20,019
Other unconsolidated real estate ventures (2) (3) |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of Stores | property | 119 |  |  |  |
Investment balance | $ 314,864 |  |  |  | 317,104
Other unconsolidated real estate ventures (2) (3) | Minimum |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity Ownership % | 10.00% |  |  |  |
Other unconsolidated real estate ventures (2) (3) | Maximum |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Equity Ownership % | 50.00% |  |  |  |
SmartStop Self Storage REIT, Inc. Preferred Stock |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment balance | $ 200,000 |  |  | $ 200,000 | 200,000
Investment, preferred dividend rate |  |  |  | 6.25% |
Period after which preferred stock dividend is subject to increase |  |  |  | 5 years |
Investment redemption restriction period |  |  |  | 5 years |
Strategic Storage Trust VI, Inc. Preferred Stock |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Investment balance | $ 150,000 |  |  |  | $ 150,000
Investment in shares |  |  | $ 150,000 |  |
Dividend rate, percentage |  |  | 8.35% |  |
Dividend rate increase, threshold |  |  | 5 years |  |
Redemption period |  |  | 3 years |  |
Alan Jathoo JV LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of stores sold | joint_venture | 9 |  |  |  |
Gain on sale of joint ventures | $ 3,406 |  |  |  |
ESS Bristol Investments LLC |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |
Number of stores purchased | store |  | 3 |  |  |

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