FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Financial Assets:
Cash and Cash Equivalents, at Carrying Value	$ 1,880	$ 8	$ 24	$ 1,258
Carrying Amount [Member]
Financial Assets:
Cash and Cash Equivalents, at Carrying Value	1,880	8
Mortgage loans receivable, net of discount	8,833	8,870
Interest rate swap assets	1,494	1,692
Financial Liabilities:
Secured debt	494,256	499,793
Unsecured debt	305,000	305,000
Unsecured bank credit facilities	99,359	88,952
Interest rate swap liabilities	1,071	244
Fair Value [Member]
Financial Assets:
Cash and Cash Equivalents, Fair Value Disclosure	1,880	8
Mortgage loans receivable, net of discount	9,010	9,040
Interest rate swap assets	1,494	1,692
Financial Liabilities:
Secured debt	517,263	519,390
Unsecured debt	298,169	294,860
Unsecured bank credit facilities	99,719	89,140
Interest rate swap liabilities	$ 1,071	$ 244