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NONCONTROLLING INTERESTS - Operating Partnership Ownership (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended |
--- | --- | --- | --- | ---
Apr. 18, 2016 | May 14, 2015 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Operating Partnership Ownership |  |  |  |  |
OP Units outstanding which are not owned by the general partner (as a percent) |  |  | 1.10% |  | 1.10%
OP units issued (in shares) | 61,224 | 20,408 |  |  |
Issuance of OP Shares | $ 1,500 | $ 500 |  |  |
Increase (decrease) to OP units owned by third parties and a corresponding decrease to capital |  |  | $ (1,385) | $ 6,073 |
CubeSmart, L.P. and Subsidiaries |  |  |  |  |
Operating Partnership Ownership |  |  |  |  |
OP units outstanding (in shares) |  |  | 2,031,394 |  | 2,032,394
Number of trading days used to determine average of the closing prices of the common shares |  |  | 10 days |  |
Increase (decrease) to OP units owned by third parties and a corresponding decrease to capital |  |  | $ (1,385) | $ 6,073 |

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- Definition Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 16(c) -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 14 -URI http://asc.fasb.org/extlink&oid=27011957&loc=SL6540498-122764 + Details
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