LONG-TERM INCENTIVE COMPENSATION (Details) (USD $)	3 Months Ended			12 Months Ended		0 Months Ended				3 Months Ended			12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Feb. 28, 2014 Officer	Dec. 31, 2009 Senior Executives Long Term Investment Alignment Program	Dec. 31, 2009 Senior Executives Fund IV Long Term Investment Alignment Program	Feb. 28, 2014 LTIP Units Officer	Mar. 31, 2014 LTIP Units Kenneth Bernstein	Feb. 28, 2014 Restricted Stock Officer	Feb. 28, 2014 Restricted Stock Other Employees	Mar. 31, 2014 LTIP Units and Restricted Stock	Mar. 31, 2014 LTIP Units and Restricted Stock	Mar. 31, 2013 LTIP Units and Restricted Stock	Dec. 31, 2013 LTIP Units and Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in shares)						326,230	114,198	918	10,527
Percent of Awards Issued to Officers Subject to Performance Measures			16.00%
Stock Granted During Period, Value, Share-based Compensation, Net of Forfeitures										$ 11,900,000	$ 11,400,000
Share-based Compensation	2,087,000	1,411,000									400,000
Long Term Incentive and Share Based Compensation Expense											$ 1,400,000	$ 1,300,000	$ 500,000
Maximum Percentage of Promote To Be Awarded as Share Based Compensation Awards				25.00%	10.00%