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INVESTMENT ACTIVITY (Details) $ in Thousands	1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended	18 Months Ended
	Aug. 31, 2023 USD ($)	Jun. 30, 2024 USD ($) facility	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) facility	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($) facility	Jun. 30, 2024 USD ($) property facility
Self storage under construction
Self-storage facilities
Number of self-storage facilities | facility		2		2			2
Development costs		$ 16,800		$ 16,800			$ 16,800
Expected construction cost		45,700		$ 45,700			$ 45,700
Self Storage Facilities in New York and New Jersey
Self-storage facilities
Number of stores | property							2
2024 Acquisitions
Self-storage facilities
Number of self-storage facilities acquired | facility				2
Aggregate purchase price				$ 20,200
Intangible value of the in-place leases		$ 900		$ 900			$ 900
Estimated life		12 months		12 months			12 months
Amortization expense		$ 200		$ 400
Purchase Price				$ 20,200
2023 Acquisitions
Self-storage facilities
Number of self-storage facilities acquired | facility						1
Aggregate purchase price						$ 22,000
Intangible value of the in-place leases						2,000
Estimated life		12 months		12 months			12 months
Amortization expense		$ 500	$ 0	$ 1,000	$ 0
Purchase Price						$ 22,000
2023 Acquisitions | New Jersey
Self-storage facilities
Number of self-storage facilities acquired | facility						1
2023 Dispositions
Self-storage facilities
Aggregate sale price						$ 8,000
2023 Dispositions | LAACO
Self-storage facilities
Aggregate sale price						800
Gain (loss) from sale of real estate	$ (200)
2023 Dispositions | Illinois
Self-storage facilities
Proceeds from involuntary conversion, net						8,000
Gain on involuntary conversion, net						$ (4,800)
Cubesmart
Self-storage facilities
Ownership interest by Parent		99.50%		99.50%			99.50%

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Amount of total construction cost expected of the projects.

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The current amount of expenditures for a real estate project that has not yet been completed.

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