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EARNINGS PER SHARE AND UNIT AND SHAREHOLDERS' EQUITY AND CAPITAL - Earnings Per Share and Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2021 | Jun. 30, 2021 | Mar. 31, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Basic and diluted earnings per common share |  |  |  |  |  |  |  |  |
Net loss | $ 113,440 |  |  | $ 90,569 |  |  | $ 210,300 | $ 184,250 |
Noncontrolling interests in the Operating Partnership | (733) |  |  | (3,149) |  |  | (1,404) | (6,466) |
Noncontrolling interest in subsidiaries | 181 |  |  | 230 |  |  | 505 | 350 |
NET INCOME ATTRIBUTABLE TO THE COMPANY'S COMMON SHAREHOLDERS | $ 112,888 |  |  | $ 87,650 |  |  | $ 209,401 | $ 178,134 |
Weighted average basic shares outstanding (in shares) | 225,023,000 |  |  | 202,194,000 |  |  | 224,883,000 | 200,934,000 |
Share options and restricted share units (in shares) | 943,000 |  |  | 1,603,000 |  |  | 998,000 | 1,357,000 |
Weighted-average diluted shares outstanding (in shares) | 225,966,000 |  |  | 203,797,000 |  |  | 225,881,000 | 202,291,000 |
Basic earnings per share attributable to common shareholders (in dollars per share) | $ 0.50 |  |  | $ 0.43 |  |  | $ 0.93 | $ 0.89 |
Diluted earnings per share attributable to common shareholders (in dollars per share) | $ 0.50 |  |  | $ 0.43 |  |  | $ 0.93 | $ 0.88 |
Basic and diluted earnings per common unit |  |  |  |  |  |  |  |  |
Net Income |  |  |  |  |  |  | $ 210,300 | $ 184,250 |
Noncontrolling interests in the Operating Partnership | $ (733) |  |  | $ (3,149) |  |  | (1,404) | (6,466) |
Noncontrolling interest in subsidiaries |  |  |  |  |  |  | 505 | 350 |
Net income attributable to common unitholders |  |  |  |  |  |  | $ 209,401 | $ 178,134 |
Weighted average basic shares outstanding (in shares) | 225,023,000 |  |  | 202,194,000 |  |  | 224,883,000 | 200,934,000 |
Share options and restricted share units (in shares) | 943,000 |  |  | 1,603,000 |  |  | 998,000 | 1,357,000 |
Weighted-average diluted shares outstanding (in shares) | 225,966,000 |  |  | 203,797,000 |  |  | 225,881,000 | 202,291,000 |
Basic earnings per unit attributable to common unitholders |  |  |  |  |  |  | $ 0.93 | $ 0.89 |
Diluted earnings per share attributable to common shareholders (in dollars per share) | $ 0.50 |  |  | $ 0.43 |  |  | $ 0.93 | $ 0.88 |
Potentially dilutive shares not included in the earnings per share calculation as their effect is antidilutive (in shares) | 300,000 |  |  | 0 |  |  | 300,000 | 0 |
Common stock, cash dividends declared (in dollars per share) | $ 0.43 | $ 0.43 | $ 0.43 | $ 0.34 | $ 0.34 | $ 0.34 | $ 1.29 | $ 1.02 |
OP units outstanding (in shares) | 1,460,520 |  |  | 7,008,397 |  |  | 1,460,520 | 7,008,397 | 1,901,595
Common shares, shares outstanding | 224,568,376 |  |  |  |  |  | 224,568,376 |  | 223,917,993
CubeSmart, L.P. and Subsidiaries |  |  |  |  |  |  |  |  |
Basic and diluted earnings per common share |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  |  |  | $ 210,300 | $ 184,250 |
Noncontrolling interests in the Operating Partnership | $ (733) |  |  | $ (3,149) |  |  |  |  |
Weighted average basic shares outstanding (in shares) | 225,023,000 |  |  | 202,194,000 |  |  |  |  |
Share options and restricted share units (in shares) | 943,000 |  |  | 1,603,000 |  |  |  |  |
Weighted-average diluted shares outstanding (in shares) | 225,966,000 |  |  | 203,797,000 |  |  |  |  |
Diluted earnings per share attributable to common shareholders (in dollars per share) | $ 0.50 |  |  | $ 0.43 |  |  |  |  |
Basic and diluted earnings per common unit |  |  |  |  |  |  |  |  |
Net Income | $ 113,440 |  |  | $ 90,569 |  |  |  |  |
Noncontrolling interests in the Operating Partnership | (733) |  |  | (3,149) |  |  |  |  |
Noncontrolling interest in subsidiaries | 181 |  |  | 230 |  |  |  |  |
Net income attributable to common unitholders | $ 112,888 |  |  | $ 87,650 |  |  |  |  |
Weighted average basic shares outstanding (in shares) | 225,023,000 |  |  | 202,194,000 |  |  |  |  |
Share options and restricted share units (in shares) | 943,000 |  |  | 1,603,000 |  |  |  |  |
Weighted-average diluted shares outstanding (in shares) | 225,966,000 |  |  | 203,797,000 |  |  |  |  |
Basic earnings per unit attributable to common unitholders | $ 0.50 |  |  | $ 0.43 |  |  |  |  |
Diluted earnings per share attributable to common shareholders (in dollars per share) | $ 0.50 |  |  | $ 0.43 |  |  |  |  |

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