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Real estate property acquired, land subject to ground lease.

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INVESTMENT ACTIVITY (Details) $ in Thousands				1 Months Ended	12 Months Ended			36 Months Ended
INVESTMENT ACTIVITY (Details) $ in Thousands	Jan. 18, 2023 USD ($)	Apr. 28, 2022 USD ($)	Feb. 02, 2022 USD ($)	Dec. 31, 2024 USD ($) item loan facility	Dec. 31, 2024 USD ($) facility shares	Dec. 31, 2023 USD ($) facility shares	Dec. 31, 2022 USD ($) facility shares	Dec. 31, 2024 USD ($) facility	Dec. 12, 2024 USD ($)
Self-storage facilities
Proceeds from involuntary conversion, net						$ 7,424
Gain on involuntary conversion, net						(4,827)
Number of stores \| facility								4
Mortgage loans and notes payable, net				$ 205,915	$ 205,915	$ 128,186		$ 205,915
Total Construction Costs								$ 120,800
OP units redeemed \| shares					105,757	126,087	475,046
LAACO
Self-storage facilities
Gain (loss) from sale of real estate							$ 0
Joint Venture
Self-storage facilities
Percentage of interest acquired				85.00%	85.00%			85.00%
Hines Portfolio December 2024 \| Joint Venture
Self-storage facilities
Percentage of interest acquired				85.00%	85.00%			85.00%
Self storage under construction
Self-storage facilities
Number of self-storage facilities \| facility				2	2			2
Development costs				$ 23,600	$ 23,600			$ 23,600
Expected construction cost				45,700	$ 45,700			$ 45,700
Self Storage Facility in Astoria, NY
Self-storage facilities
Number of stores \| facility								1
Ownership interest held by the entity (as a percent)								70.00%
Total Construction Costs								$ 45,900
Self Storage Facility in Clark, NJ
Self-storage facilities
Number of stores \| facility								1
Ownership interest held by the entity (as a percent)								90.00%
Total Construction Costs								$ 15,900
Self Storage Facility in Valley Stream, NY
Self-storage facilities
Number of stores \| facility								1
Ownership interest held by the entity (as a percent)								100.00%
Total Construction Costs								$ 37,200
Option to put ownership interest in the venture	49
Cash portion of put option paid	$ 15,300
Self Storage Facility in Vienna, VA
Self-storage facilities
Number of stores \| facility								1
Ownership interest held by the entity (as a percent)								80.00%
Total Construction Costs								$ 21,800
2024 Acquisitions
Self-storage facilities
Number of self-storage facilities acquired \| facility					18
Aggregate purchase price					$ 199,400
Purchase Price					$ 199,400
2024 Acquisitions \| Hines Portfolio December 2024
Self-storage facilities
Number of self-storage facilities acquired \| facility					14
Aggregate purchase price				$ 157,300	$ 157,250
Intangible value of the in-place leases									$ 10,100
Estimated life				12 months	12 months			12 months
Amortization expense					$ 800
Purchase Price				$ 157,300	$ 157,250
Ownership interest held by the entity (as a percent)				85.00%
Number of consolidated joint ventures In portfolio \| item				7
Number of real estate properties owned \| facility				14
Number of encumbered mortgage loans \| loan				2
Aggregate net premium									400
2024 Acquisitions \| Connecticut, Oregon and Pennsylvania Assets
Self-storage facilities
Number of self-storage facilities acquired \| facility					4
Aggregate purchase price					$ 42,200
Intangible value of the in-place leases				$ 2,000	$ 2,000			$ 2,000
Estimated life				12 months	12 months			12 months
Amortization expense					$ 900
Purchase Price					$ 42,200
2024 Acquisitions \| Connecticut Assets January 2024
Self-storage facilities
Number of self-storage facilities acquired \| facility					2
Aggregate purchase price					$ 20,200
Purchase Price					$ 20,200
2024 Acquisitions \| Oregon Asset November 2024
Self-storage facilities
Number of self-storage facilities acquired \| facility					1
Aggregate purchase price					$ 10,450
Purchase Price					$ 10,450
2024 Acquisitions \| Pennsylvania Asset November 2024
Self-storage facilities
Number of self-storage facilities acquired \| facility					1
Aggregate purchase price					$ 11,500
Purchase Price					11,500
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
Purchase Price						$ 22,000
2023 Acquisitions \| Leases, Acquired-in-Place
Self-storage facilities
Amortization expense					1,800	$ 200
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)
2022 Acquisitions
Self-storage facilities
Number of self-storage facilities acquired \| facility							3
Aggregate purchase price							$ 75,700
Intangible value of the in-place leases							$ 3,400
Estimated life							12 months
Purchase Price							$ 75,700
2022 Acquisitions \| Leases, Acquired-in-Place
Self-storage facilities
Amortization expense					0	1,100	$ 2,300
2022 Acquisitions \| Texas
Self-storage facilities
Number of self-storage facilities acquired \| facility							1
2022 Acquisitions \| Maryland
Self-storage facilities
Number of self-storage facilities acquired \| facility							1
2022 Acquisitions \| Georgia
Self-storage facilities
Number of self-storage facilities acquired \| facility							1
2022 Acquisitions \| Self-storage Facility in Bronx, NY
Self-storage facilities
Aggregate purchase price			$ 7,500
Purchase Price			7,500
Lease liability derecognized			5,000
Right of use Assets derecognized			$ 4,100
2022 Dispositions \| LAACO
Self-storage facilities
Aggregate sale price							$ 44,000
Joint Venture \| Acquisitions
Self-storage facilities
Real estate property acquired, land subject to ground lease		$ 6,100
Percentage of interest acquired		20.00%
Joint Venture \| Self Storage Facility in Valley Stream, NY
Self-storage facilities
Ownership interest held by the entity (as a percent)	51.00%
Mortgage Loans
Self-storage facilities
Mortgage loans and notes payable, net				$ 205,915	$ 205,915	$ 128,186		$ 205,915
Mortgage Loans \| 2024 Acquisitions \| Hines Portfolio December 2024
Self-storage facilities
Mortgage loans and notes payable, net									115,400
Fair value									$ 115,800