SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS	3 Months Ended
SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS	Mar. 31, 2013
Noncontrolling Interest [Abstract]
Shareholders' Equity And Noncontrolling Interests	SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS During the first quarter 2013, the Company issued 2.0 million Common Shares under its at-the-market ("ATM") program generating gross proceeds of $53.7 million and net proceeds of $52.9 million. Subsequent to March 31, 2013, the Company completed this ATM program with an aggregate offering amount of $125.0 million of gross proceeds from the sale of Common Shares. Under this program, the Company issued a total of 4.9 million Common Shares which generated net proceeds of $123.1 million. In addition, the Company established a new ATM equity program with an additional aggregate offering amount of up to $150.0 million of gross proceeds from the sale of Common Shares. The net proceeds from these ATM equity programs have been, and will be, used by the Company primarily to fund acquisitions directly in the Core Portfolio and through its capital contributions to the Opportunity Funds. Noncontrolling interests represent the portion of equity in entities consolidated in the accompanying financial statements that the Company does not own. Such noncontrolling interests are reported on the Consolidated Balance Sheets within equity, separately from shareholders' equity and include third party interests in the Company’s Opportunity Funds and other entities. It also includes interests in the Operating Partnership which represent (i) the limited partners’ 284,097 Common OP Units at March 31, 2013 and December 31, 2012; (ii) 188 Series A Preferred OP Units at March 31, 2013 and December 31, 2012; and (iii) 379,522 and 168,357 LTIP Units at March 31, 2013 and December 31, 2012, respectively.

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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