FAIR VALUE DISCLOSURES (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014		Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration liability			$ 7,500
New contingent liability	3,200
Change in fair value of contingent consideration	(860)
Payment of contingent consideration	(5,240)
Loans receivable, Face Value	237,955	[1]	176,558	[1]
Preferred equity investment, Face Value	11,631		7,695
Preferred equity investments	12,268
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	238,853	[2]	177,509	[2]
Preferred equity investments	11,821		7,784
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	237,385		176,985
Preferred equity investments	12,268		7,950
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	550,000	[1]	411,250	[1]
Senior Notes [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	550,000	[2]	414,402	[2]
Senior Notes [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	547,000		421,122
Mortgage indebtedness [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	124,714	[1]	141,328	[1]
Mortgage indebtedness [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	124,714	[2]	141,328	[2]
Mortgage indebtedness [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	$ 108,467		$ 130,622

[1] (1) Face value represents amounts contractually due under the terms of the respective agreements.

[2] (2) Carrying amounts represent the book value of financial instruments and include unamortized premiums (discounts).