FAIR VALUE DISCLOSURES (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable, Face Value	$ 38,602	[1]	$ 11,965	[1]
Preferred equity investment, Face Value	7,004		0
Preferred equity investments	7,253
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	39,033	[2]	12,017	[2]
Preferred equity investments	7,090		0
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	40,534		12,826
Preferred equity investments	7,253		0
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	411,250	[1]	325,000	[1]
Senior Notes [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	414,538	[2]	330,666	[2]
Senior Notes [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	417,066		345,313
Mortgage indebtedness [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	142,241	[1]	152,322	[1]
Mortgage indebtedness [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	142,241	[2]	152,322	[2]
Mortgage indebtedness [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	130,826		152,559
Amended Secured Revolving Credit Facility [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	0	[1]	92,500	[1]
Amended Secured Revolving Credit Facility [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	0	[2]	92,500	[2]
Amended Secured Revolving Credit Facility [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	$ 0		$ 92,500

[1] Face value for loans receivable, Senior Notes, mortgage indebtedness and the Secured Revolving Credit Facility represents amounts contractually due under the terms of the respective agreements. Face value for preferred equity investments represents amounts paid, plus preferred returns earned less distributions received.

[2] Carrying amounts represent the book value of financial instruments and include unamortized premiums (discounts). Also included in the carrying amounts for loans receivable and preferred equity investments are capitalized origination and transaction costs.