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ORGANIZATION AND NATURE OF OPERATIONS (Details) | 3 Months Ended
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Mar. 31, 2017 state segment
ORGANIZATION AND NATURE OF OPERATIONS |
Number of states in which self-storage facilities are located | state | 23
Number of reportable segments | segment | 1
Percentage of the entity's partnership interest in Operating Partnership | 98.90%
Common stock, conversion ratio | 1

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