TRANSACTIONS WITH AFFILIATES AND OTHER RELATED PARTIES Additional Information (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
General and administrative expense	$ 16,991,000	$ 16,080,000	$ 15,783,000	$ 15,115,000	$ 16,019,000	$ 13,710,000	$ 14,378,000	$ 14,708,000	$ 63,969,000	$ 58,815,000	$ 61,454,000
Former Executive Officer
Related Party Transaction [Line Items]
Separation Compensation											4,100,000
Non-qualified supplemental retirement benefit											30,000
General and administrative expense											$ 6,700,000