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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURE (Details) $ in Thousands |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 19, 2020 USD ($) facility | Jun. 06, 2019 property | Jun. 05, 2019 USD ($) property item facility | Sep. 05, 2018 USD ($) property | Jan. 31, 2018 USD ($) | Dec. 15, 2016 | Mar. 31, 2020 USD ($) property | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($) property
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | $ 95,174 |  | $ 91,117
Acquisitions of storage facilities |  |  |  |  |  |  | 9,090 | $ 25,097 |
Summary of results of operations of the real estate venture |  |  |  |  |  |  |  |  |
Company's share of net income (loss) |  |  |  |  |  |  | (5) | 261 |
HVPSE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | $ 5,568 |  |
Ownership interest in partnership (as a percent) | 10.00% |  |  |  |  |  | 10.00% |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 14 |  |
Number of self-storage facilities acquired | facility | 14 |  |  |  |  |  |  |  |
Acquisitions of storage facilities | $ 135,300 |  |  |  |  |  |  |  |
Intangible value of the in-place leases | 7,700 |  |  |  |  |  |  |  |
Contribution To Real Estate Venture | $ 5,600 |  |  |  |  |  |  |  |
Interest rate (as percentage) | 1.60% |  |  |  |  |  |  |  |
HVPSE | Term Loan Facility |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Proceeds from debt | $ 81,600 |  |  |  |  |  |  |  |
HHFNE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | $ 1,913 |  | $ 1,998
Ownership interest in partnership (as a percent) |  |  |  |  |  |  | 10.00% |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 13 |  | 13
HHFNE | Secured Debt Due December 2019 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Outstanding debt |  |  |  |  |  |  | $ 45,000 |  |
HHFNE | LIBOR |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Interest rate (as percentage) |  |  |  |  |  | 1.20% |  |  |
HHFNE | LIBOR | Secured Debt Due December 2019 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Interest rate (as percentage) |  |  |  |  |  |  | 1.20% |  |
HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Ownership interest held by the entity (as a percent) |  |  | 90.00% |  |  |  |  |  |
Number of storage facilities owned by investee | facility |  |  | 18 |  |  |  |  |  |
Number of self-storage facilities acquired | property |  |  | 50 |  |  |  |  |  |
Net proceeds from sale of assets |  |  | $ 82,900 |  |  |  |  |  |
Aggregate sale price |  |  | $ 293,500 |  |  |  |  |  |
Number of mortgage loans | item |  |  | 5 |  |  |  |  |  |
Summary of results of operations of the real estate venture |  |  |  |  |  |  |  |  |
Gain from sale of real estate, net |  |  | $ 106,700 |  |  |  |  |  |
HVP III | Term Loan Facility |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Outstanding debt |  |  | 22,900 |  |  |  |  |  |
HVP III | Credit Facility |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Outstanding debt |  |  | 179,500 |  |  |  |  |  |
Principal amount of debt |  |  | $ 185,500 |  |  |  |  |  |
HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | $ 22,860 |  | $ 23,112
Ownership interest in partnership (as a percent) |  |  |  |  |  |  | 20.00% |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 21 |  | 21
HVP IV | Secured Loan Due May 2021 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Outstanding debt |  |  |  |  |  |  | $ 82,200 |  |
Principal amount of debt |  |  |  |  |  |  | 107,000 |  |
HVP IV | Secured Debt Due June 2024 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Outstanding debt |  |  |  |  |  |  | $ 55,500 |  |
HVP IV | LIBOR | Secured Loan Due May 2021 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Interest rate (as percentage) |  |  |  |  |  |  | 1.70% |  |
HVP IV | LIBOR | Secured Debt Due June 2024 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Interest rate (as percentage) |  |  |  |  |  |  | 2.75% |  |
HHF |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | $ 64,833 |  | $ 66,007
Ownership interest in partnership (as a percent) |  |  |  |  |  |  | 50.00% |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 35 |  | 35
Arizona | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 2 |  |
Maryland | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 1 |  |
Michigan | HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of assets sold | property |  |  | (17) |  |  |  |  |  |
Connecticut | HHFNE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 3 |  |
Connecticut | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 2 |  |
Massachusetts | HHFNE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 6 |  |
Rhode Island | HHFNE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 2 |  |
Vermont | HHFNE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 2 |  |
Tennessee | HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of assets sold | property |  |  | (8) |  |  |  |  |  |
Florida | HVPSE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | facility | (2) |  |  |  |  |  |  |  |
Florida | HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of assets sold | property |  |  | (3) |  |  |  |  |  |
Florida | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 4 |  |
Texas |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Cash paid for acquisition of remaining interest in real estate ventures |  |  |  |  | $ 200 |  |  |  |
Texas | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 8 |  |
Texas | HHF |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 34 |  |
North Carolina | HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of assets sold | property |  |  | (3) |  |  |  |  |  |
North Carolina | HHF |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 1 |  |
South Carolina | HVPSE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | facility | (4) |  |  |  |  |  |  |  |
South Carolina | HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of assets sold | property |  |  | (15) |  |  |  |  |  |
Georgia | HVPSE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | facility | (8) |  |  |  |  |  |  |  |
Georgia | HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of assets sold | property |  |  | (4) |  |  |  |  |  |
Georgia | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 2 |  |
Pennsylvania | HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 1 |  |
Ventures |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | $ 95,174 |  | $ 91,117
Number of storage facilities owned by investee | property |  |  |  |  |  |  | 83 |  | 69
Assets |  |  |  |  |  |  |  |  |
Storage propeties, net |  |  |  |  |  |  | $ 677,226 |  | $ 552,791
Other assets |  |  |  |  |  |  | 21,120 |  | 11,997
Total Assets |  |  |  |  |  |  | 698,346 |  | 564,788
Liabilities and equity |  |  |  |  |  |  |  |  |
Other liabilities |  |  |  |  |  |  | 11,836 |  | 10,064
Debt |  |  |  |  |  |  | 360,950 |  | 280,392
Equity |  |  |  |  |  |  |  |  |
CubeSmart |  |  |  |  |  |  | 95,174 |  | 91,117
Joint venture partner |  |  |  |  |  |  | 230,386 |  | 183,215
Total liabilities and equity |  |  |  |  |  |  | 698,346 |  | $ 564,788
Summary of results of operations of the real estate venture |  |  |  |  |  |  |  |  |
Total revenues |  |  |  |  |  |  | 14,605 | 23,203 |
Operating expenses |  |  |  |  |  |  | (6,942) | (10,163) |
Other expenses |  |  |  |  |  |  | (113) | (142) |
Interest expense, net |  |  |  |  |  |  | (2,720) | (4,216) |
Depreciation and amortization |  |  |  |  |  |  | (6,423) | (9,506) |
Net income (loss) |  |  |  |  |  |  | (1,593) | (824) |
Company's share of net income (loss) |  |  |  |  |  |  | (5) | $ 261 |
HHFNE |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | 3,800 |  |
HVP III |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of storage facilities owned by investee | property |  | 18 |  |  |  |  |  |  |
HVP IV |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  |  |  |  | 26,300 |  |
HHF | Secured loan 3.59% due April 30, 2021 |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Amount of loan obtained |  |  |  |  |  |  | $ 100,000 |  |
Interest on real estate venture debt |  |  |  |  |  |  | 3.59% |  |
Capital Storage Partners, LLC |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Investment in real estate entities |  |  |  | $ 5,000 |  |  |  |  |
Ownership interest in partnership (as a percent) |  |  |  | 100.00% |  |  |  |  |
Number of self-storage facilities acquired | property |  |  |  | 22 |  |  |  |  |
Series A Preferred shares, percentage |  |  |  | 11.00% |  |  |  |  |
Capital Storage Partners, LLC | Florida |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | property |  |  |  | 4 |  |  |  |  |
Capital Storage Partners, LLC | Texas |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | property |  |  |  | 13 |  |  |  |  |
Capital Storage Partners, LLC | Oklahoma |  |  |  |  |  |  |  |  |
Investment in Unconsolidated Real Estate Venture |  |  |  |  |  |  |  |  |
Number of self-storage facilities acquired | property |  |  |  | 5 |  |  |  |  |

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