SHAREHOLDERS' EQUITY AND NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Noncontrolling Interest [Line Items]
Proceeds from issuance of common stock	$ 26,933	$ 113,749
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)	800,000.0
Gross proceeds from issuance of common stock	$ 27,600
Proceeds from issuance of common stock	$ 26,900
LTIP Units
Noncontrolling Interest [Line Items]
Share-based compensation, outstanding (in shares)	929,169		675,367
At The Market Equity Program
Noncontrolling Interest [Line Items]
Common Stock, Shares Authorized Not Issued, Value	$ 165,400		$ 200,000