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NONCONTROLLING INTERESTS - Operating Partnership Ownership (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 16, 2019 | Jan. 31, 2018 | Mar. 31, 2020 | Mar. 31, 2019 | Dec. 31, 2019
Operating Partnership Ownership |  |  |  |  |
OP Units outstanding which are not owned by the general partner (as a percent) |  |  | 1.00% |  | 1.00%
Elimination of noncontrolling interest in subsidiaries due to acquisition |  |  |  | $ 10,000 |
Adjustment for noncontrolling interest in the Operating Partnership |  |  | $ 7,976 | (6,681) | $ 5,900
California |  |  |  |  |
Operating Partnership Ownership |  |  |  |  |
OP units issued (in shares) | 106,738 |  |  |  |
Issuance of OP Shares | $ 3,600 |  |  |  |
Total consideration | 18,500 |  |  |  |
Cash paid for acquisition | $ 14,900 |  |  |  |
Texas |  |  |  |  |
Operating Partnership Ownership |  |  |  |  |
OP units issued (in shares) |  | 168,011 |  |  |
Issuance of OP Shares |  | $ 4,800 |  |  |
Total consideration |  | 12,200 |  |  |
Cash paid for acquisition |  | 200 |  |  |
Amount of mortgage loan commitment |  | $ 7,200 |  |  |
Cubesmart, L P and Subsidiaries |  |  |  |  |
Operating Partnership Ownership |  |  |  |  |
OP units outstanding (in shares) |  |  |  |  | 1,972,308
Number of trading days used to determine average of the closing prices of the shares |  |  | 10 days |  |
Elimination of noncontrolling interest in subsidiaries due to acquisition |  |  |  | 10,000 |
Adjustment for noncontrolling interest in the Operating Partnership |  |  | $ 7,976 | $ (6,681) |

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