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