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SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (Details) (USD $) | 3 Months Ended | 1 Months Ended | 3 Months Ended |  |  |  |  | 3 Months Ended |  |  | 1 Months Ended
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Mar. 31, 2012 | Mar. 31, 2011 | Mar. 31, 2012 At The Market Equity Program [Member] | Mar. 31, 2012 At The Market Equity Program [Member] | Mar. 31, 2012 Operating Partnership, as General Partner or Managing Member [Member] | Dec. 31, 2011 Operating Partnership, as General Partner or Managing Member [Member] | Mar. 31, 2012 Series A Preferred Stock [Member] Operating Partnership, as General Partner or Managing Member [Member] | Dec. 31, 2011 Series A Preferred Stock [Member] Operating Partnership, as General Partner or Managing Member [Member] | Mar. 31, 2012 Common Stock [Member] At The Market Equity Program [Member] | Mar. 31, 2012 LTIP Units [Member] | Dec. 31, 2011 LTIP Units [Member] | Jan. 31, 2012 Maximum [Member] Common Stock [Member] | Apr. 30, 2012 Issuance of Stock Cash Proceeds Received [Member] At The Market Equity Program [Member]
Noncontrolling Interest [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, Reserved for Future Issuance, Value, At The Market Equity Program |  |  |  |  |  |  |  |  |  |  |  | $ 75,000,000 |
Stock Issued During Period, Shares, New Issues (in shares) |  |  |  |  |  |  |  |  | 800,000 |  |  |  |
Gross Proceeds from Issuance of Common Stock |  |  |  | 18,200,000 |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock | $ 8,029,000 | $ 0 | $ 8,200,000 | $ 17,900,000 |  |  |  |  |  |  |  |  | $ 9,700,000
Limited Partners' Capital Account, Units Outstanding (in shares) |  |  |  |  | 384,991 | 279,748 | 188 | 188 |  |  |  |  |
Share-based Compensation, Units Outstanding (in shares) |  |  |  |  |  |  |  |  |  | 237,000 | 217,826 |  |

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