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SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands | 6 Months Ended |
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014
Noncontrolling Interest [Line Items] |  |  |
Proceeds from issuance of common stock | $ 21,080 | $ 88,499 |
Operating Partnership, as General Partner or Managing Member |  |  |
Noncontrolling Interest [Line Items] |  |  |
Limited partners' common OP units (in shares) | 2,961,517 |  | 2,988,277
Series A Preferred Stock | Operating Partnership, as General Partner or Managing Member |  |  |
Noncontrolling Interest [Line Items] |  |  |
Limited partners' common OP units (in shares) | 188 |  | 188
At The Market Equity Program | Common stock |  |  |
Noncontrolling Interest [Line Items] |  |  |
Common stock issued during the period (in shares) | 600,000 |  |
Gross proceeds from issuance of common stock | $ 21,600 |  |
Proceeds from issuance of common stock | $ 21,100 |  |
LTIP Units |  |  |
Noncontrolling Interest [Line Items] |  |  |
Share-based compensation, outstanding (in shares) | 929,169 |  | 675,367

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