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INVESTMENT ACTIVITY (Details) |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended | 24 Months Ended | 36 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 28, 2022 USD ($) | Feb. 02, 2022 USD ($) | Dec. 14, 2021 USD ($) | Dec. 09, 2021 facility item | Jun. 29, 2021 USD ($) | Dec. 22, 2020 USD ($) | Sep. 29, 2020 USD ($) shares | Jul. 31, 2020 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) facility shares | Dec. 31, 2021 USD ($) facility shares | Dec. 31, 2020 USD ($) facility item shares | Dec. 31, 2021 USD ($) item | Dec. 31, 2022 USD ($) facility
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains from sales of real estate, net |  |  |  |  |  |  |  |  |  |  | $ 32,698,000 | $ 6,710,000 |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 7
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | 202,600,000
Acquisition of noncontrolling interest |  |  |  |  |  |  |  |  |  |  | $ 3,397,000 |  |  |
OP units redeemed | shares |  |  |  |  |  |  |  |  |  | 475,046 | 5,519,233 | 100,000 |  |
Right-of-use assets - operating leases |  |  |  |  |  |  |  |  | $ 54,741,000 | $ 49,491,000 | $ 54,741,000 |  | $ 54,741,000 | $ 49,491,000
LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains from sales of real estate, net |  |  |  |  |  |  |  |  |  | 0 |  |  |  |
New York |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash paid for acquisition |  |  |  |  |  |  | $ 1,000,000.0 |  |  |  |  |  |  |
Units issued (in shares) | shares |  |  |  |  |  |  | 276,497 |  |  |  |  |  |  |
Units issued |  |  |  |  |  |  | $ 9,000,000.0 |  |  |  |  |  |  |
LAACO. |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gains from sales of real estate, net |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |
Self storage under construction |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities | facility |  |  |  |  |  |  |  |  |  | 2 |  |  |  | 2
Development costs |  |  |  |  |  |  |  |  |  | $ 27,600,000 |  |  |  | $ 27,600,000
Expected construction cost |  |  |  |  |  |  |  |  |  | $ 64,000,000.0 |  |  |  | $ 64,000,000.0
Self storage under construction | New York |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities | facility |  |  |  |  |  |  |  |  |  | 1 |  |  |  | 1
Self storage under construction | New Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities | facility |  |  |  |  |  |  |  |  |  | 1 |  |  |  | 1
Self Storage Facility in Valley Stream, NY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 51.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 39,000,000
Self Storage Facility in Vienna, VA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 80.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,800,000
Self Storage Facility in Newton, MA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,800,000
Self-storage facility in East Meadow, NY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,900,000
Self-storage facility in King of Prussia, PA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 70.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 22,800,000
Self-storage Facility in Arlington, VA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 90.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 26,400,000
Self Storage Facility in Brooklyn, NY I |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of facilities, construction completed and opened |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%
Total Construction Costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,900,000
2021 Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 66 |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  | $ 1,801,251,000 |  |  |
2021 Acquisitions | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  | 57 |  |  |  |  |  |  |  |  |  |
Intangible value of the in-place leases |  |  |  |  |  |  |  |  |  | $ 109,700,000 |  |  |  | 109,700,000
Estimated life |  |  |  |  |  |  |  |  |  | 12 months |  |  |  |
Amortization expense |  |  |  |  |  |  |  |  |  | $ 100,600,000 | $ 9,100,000 |  |  |
Number of facilities under contract | facility |  |  |  | 1 |  |  |  |  |  |  |  |  |  |
Number of joint ventures | item |  |  |  | 2 |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | Acquisitions | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership interest held by the entity (as a percent) |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | Texas | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  | 7 |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | Nevada | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  | 13 |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | California | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  | 20 |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | Arizona | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  | 17 |  |  |  |  |  |  |  |  |  |
2021 Acquisitions | Self-storage facilities located in US |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 8 |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  | $ 140,800,000 |  |  |
Intangible value of the in-place leases |  |  |  |  |  |  |  |  | 11,900,000 |  | $ 11,900,000 |  | 11,900,000 |
Estimated life |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |
Amortization expense |  |  |  |  |  |  |  |  |  | $ 8,300,000 | $ 3,600,000 |  |  |
2021 Acquisitions | Self-storage facilities located in US | Florida |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Acquisitions | Self-storage facilities located in US | Maryland |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Acquisitions | Self-storage facilities located in US | Nevada |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Acquisitions | Self-storage facilities located in US | Pennsylvania |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
2021 Acquisitions | Self-storage facilities located in US | New Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Acquisitions | Self-storage facilities located in US | Illinois |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Acquisitions | Self-storage facilities located in US | Georgia |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Acquisitions | Self-storage facility in Anoka, MN |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  | $ 12,000,000.0 |  |  |
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |
2022 Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  | 3 |  |  |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  | $ 75,700,000 |  |  |  |
Intangible value of the in-place leases |  |  |  |  |  |  |  |  |  | $ 3,400,000 |  |  |  | 3,400,000
Estimated life |  |  |  |  |  |  |  |  |  | 12 months |  |  |  |
2022 Acquisitions | Leases, Acquired-in-Place |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense |  |  |  |  |  |  |  |  |  | $ 2,300,000 |  |  |  |
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 |  | $ 7,500,000 |  |  |  |  |  |  |  |  |  |  |  |
Lease liability derecognized |  | 5,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Right of use Assets derecognized |  | $ 4,100,000 |  |  |  |  |  |  |  |  |  |  |  |
2021 Dispositions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities sold | facility |  |  |  |  |  |  |  |  |  |  | 5 |  |  |
Aggregate sale price |  |  |  |  |  |  |  |  |  |  | $ 43,800,000 |  |  |
Gains from sales of real estate, net |  |  |  |  |  |  |  |  |  |  | $ 32,700,000 |  |  |
2021 Dispositions | Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities sold | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Dispositions | Colorado |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities sold | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Dispositions | Nevada |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities sold | facility |  |  |  |  |  |  |  |  |  |  | 1 |  |  |
2021 Dispositions | North Carolina |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities sold | facility |  |  |  |  |  |  |  |  |  |  | 2 |  |  |
2022 Dispositions | LAACO |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate sale price |  |  |  |  |  |  |  |  |  | $ 44,000,000.0 |  |  |  |
2020 Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 21 |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 735,875,000 |  |
2020 Acquisitions | Texas |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 3 |  |
2020 Acquisitions | Florida |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 5 |  |
2020 Acquisitions | New York |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
2020 Acquisitions | Maryland |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
2020 Acquisitions | Nevada |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
2020 Acquisitions | Virginia |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
2020 Acquisitions | New Jersey |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
2020 Acquisitions | Self-storage facilities located in US |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 13 |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 195,900,000 |  |
2020 Acquisitions | Self-storage facilities located in US | Leases, Acquired-in-Place |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible value of the in-place leases |  |  |  |  |  |  |  |  |  |  |  | 11,400,000 |  |
Estimated life |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |
Amortization expense |  |  |  |  |  |  |  |  |  | 0 | $ 9,300,000 | $ 2,100,000 |  |
2020 Acquisitions | Self-storage Facility in Bronx, NY I |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate property acquired, land subject to ground lease |  |  |  |  |  |  |  | $ 9,500,000 |  |  |  |  |  |
Decrease in right-of-use asset |  |  |  |  |  |  |  | 5,100,000 |  |  |  |  |  |
Decrease in Operating Lease Liability |  |  |  |  |  |  |  | $ 5,000,000.0 |  |  |  |  |  |
2020 Acquisitions | Self-storage facilities located in New York |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | facility |  |  |  |  |  |  |  |  |  |  |  | 8 |  |
Number of real estate property acquisition tranches | item |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Aggregate purchase price |  |  |  |  |  |  |  |  |  |  |  | $ 540,000,000.0 |  |
Cash paid for acquisition |  |  |  |  |  |  |  |  |  |  |  | 210,500,000 |  |
Issuance of OP Shares |  |  |  |  |  |  |  |  |  |  |  | 175,100,000 |  |
Repayments of debt |  |  |  |  |  |  |  |  |  |  |  | 33,200,000 |  |
Units issued |  |  |  |  |  |  |  |  |  |  |  | $ 5,272,023 |  |
Number of properties, assumed mortgage | item |  |  |  |  |  |  |  |  |  |  |  | 6 |  |
Assumed mortgage debt, at fair value |  |  |  |  |  |  |  |  | $ 169,200,000 |  | $ 169,200,000 |  | $ 169,200,000 |
Outstanding principal balance of mortgage debt assumed on acquisitions |  |  |  |  |  |  |  |  |  | $ 154,400,000 |  |  |  | $ 154,400,000
Premium on debt assumed on acquisitions |  |  |  |  |  |  |  |  |  |  |  | $ 14,800,000 |  |
2020 Acquisitions | Self-storage facilities located in New York | Leases, Acquired-in-Place |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Intangible value of the in-place leases |  |  |  |  |  |  |  |  |  |  |  | $ 48,600,000 |  |
Estimated life |  |  |  |  |  |  |  |  |  |  | 12 months |  |  |
Amortization expense |  |  |  |  |  |  |  |  |  |  | $ 48,600,000 |  |  |
Number of assumed ground leases | item |  |  |  |  |  |  |  |  |  |  |  | 3 |  |
Number of facilities acquired with existing ground leases, for which the leases were classified as finance leases | item |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Number of facilities acquired with existing ground leases, for which the leases were classified as operating leases | item |  |  |  |  |  |  |  |  |  |  |  | 1 |  |
2020 Dispositions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate sale price |  |  |  |  |  |  |  |  |  |  |  | $ 12,750,000 |  |
2020 Dispositions | Self-storage facilities located in New York |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate sale price |  |  |  |  |  | $ 12,800,000 |  |  |  |  |  |  |  |
Gains from sales of real estate, net |  |  |  |  |  | $ 6,700,000 |  |  |  |  |  |  |  |
Joint Venture | Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Real estate property acquired, land subject to ground lease | $ 6,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of interest acquired | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Joint Venture | Self Storage Facility in Newton, MA |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total consideration |  |  | $ 3,400,000 |  |  |  |  |  |  |  |  |  |  |
Acquisition, gain (loss) recognized |  |  | $ 0 |  |  |  |  |  |  |  |  |  |  |
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  | 90.00% |  |  |  |  |
Minority ownership interest (as a percent) |  |  | 0.00% |  |  |  |  |  |  |  |  |  |  |
Acquisition of noncontrolling interest |  |  | $ 2,700,000 |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  | $ 13,200,000 |  |  |  |  |  |  |  |  |  |  |
Joint Venture | Self Storage Facility in Newton, MA | Joint Venture |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition of remaining interest in real estate ventures (as a percent) |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |
Joint Venture | Self-storage facility in East Meadow, NY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Put option ownership percentage in joint venture exercised (as a percent) |  |  |  |  | 49.00% |  |  |  |  |  |  |  |  |
Option to put ownership interest in the venture |  |  |  |  | $ 6,600,000 |  |  |  |  |  |  |  |  |
Joint Venture | Self-storage Facility in Brooklyn, NY |  |  |  |  |  |  |  |  |  |  |  |  |  |
Self-storage facilities |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of OP Shares |  |  |  |  |  |  | $ 9,000,000.0 |  |  |  |  |  |  |
Ownership interest held by the entity (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  | 51.00% |
Number of joint ventures | item |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Put option ownership percentage in joint venture exercised (as a percent) |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |
Option to put ownership interest in the venture |  |  |  |  |  |  | $ 10,000,000.0 |  |  |  |  |  |  |
Cash portion of put option paid |  |  |  |  |  |  | $ 1,000,000.0 |  |  |  |  |  |  |
Units issued (in shares) | shares |  |  |  |  |  |  | 276,497 |  |  |  |  |  |  |

X
- Definition Amount of total construction cost expected of the projects. + References No definition available. + Details
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- Definition The increase (decrease) during the period for right-of-use asset for operating lease. + References No definition available. + Details
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- Definition Number of facilities acquired with existing ground leases. + References No definition available. + Details
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- Definition Number of facilities acquired with existing ground leases, for which the leases were classified as finance leases. + References No definition available. + Details
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- Definition Number of facilities acquired with existing ground leases, for which the leases were classified as operating leases. + References No definition available. + Details
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- Definition The number of self-storage facilities with construction completed and opened for operation during the period. + References No definition available. + Details
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- Definition Represents the number of facilities under contract. + References No definition available. + Details
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- Definition Represents the information pertaining to number of joint ventures. + References No definition available. + Details
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- Definition Represents the number of real estate properties that were acquired. + References No definition available. + Details
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- Definition Represents the number of real estate acquired properties of which mortgages were assumed. + References No definition available. + Details
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- Definition Represents the number of real estate properties that were sold. + References No definition available. + Details
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- Definition Number of real estate property acquisition tranches. + References No definition available. + Details
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- Definition The number of self-storage facilities involved in transaction. + References No definition available. + Details
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- Definition Present value of lessee's discounted obligation for lease payments from operating lease, derecognized. + References No definition available. + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease, derecognized. + References No definition available. + Details
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- Definition Represents the option to put ownership interest in the venture. + References No definition available. + Details
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- Definition Cash portion of put option paid. + References No definition available. + Details
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- Definition Put option ownership percentage in joint venture exercised. + References No definition available. + Details
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- Definition Represents the debt assumed on real estate acquisition. + References No definition available. + Details
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- Definition Represents the premium on debt assumed on real estate acquisition. + References No definition available. + Details
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- Definition Real estate property acquired, land subject to ground lease. + References No definition available. + Details
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- Definition Represents the value of the operating units issued during the period. + References No definition available. + Details
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- Definition Shares classified as temporary equity issued during the period. + References No definition available. + Details
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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- Definition Percentage of voting equity interests acquired at the acquisition date in the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6613-128477 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126975305&loc=d3e6927-128479 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126966197&loc=d3e6578-128477 + Details
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- Definition Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=128092470&loc=d3e4845-128472 + Details
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- Definition Percentage of equity in the acquiree held by the acquirer immediately before the acquisition date in a business combination. + References No definition available. + Details
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- Definition In a business combination achieved in stages, this element represents the amount of net gain (loss) recognized by the entity as a result of remeasuring to fair value the equity interest in the acquiree it held before the business combination. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g)(2) -URI https://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463 + Details
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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI https://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 + Details
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- Definition The current amount of expenditures for a real estate project that has not yet been completed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.10) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + Details
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- Definition This element represents the amount of value allocated by a lessor (acquirer) to lease agreements which exist at acquisition of a leased property. Such amount may include the value assigned to existing tenant relationships and excludes the market adjustment component of the value assigned for above or below-market leases acquired. + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=109226691&loc=d3e2941-110230 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126905981&loc=d3e2443-110228 + Details
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- Definition Amount of increase (decrease) in obligation for operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(1) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
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- Definition Decrease in noncontrolling interest (for example, but not limited to, redeeming or purchasing the interests of noncontrolling shareholders, issuance of shares (interests) by the non-wholly owned subsidiary to the parent entity for other than cash, and a buyback of shares (interest) by the non-wholly owned subsidiary from the noncontrolling interests). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 23 -URI https://asc.fasb.org/extlink&oid=126929396&loc=SL4569655-111683 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 24 -URI https://asc.fasb.org/extlink&oid=126929396&loc=SL4616395-111683 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition The number of units redeemed during the year of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 5 -Subparagraph (SAB Topic 4.F) -URI https://asc.fasb.org/extlink&oid=120397183&loc=d3e187171-122770 + Details
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