FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Dec. 31, 2013
Financial Assets [Abstract]
Cash and Cash Equivalents, at Carrying Value	$ 342	$ 11	$ 323	$ 8
Cash held in escrow for 1031 exchange	0	698
Carrying Amount [Member]
Financial Assets [Abstract]
Cash and Cash Equivalents, at Carrying Value	342	11
Cash held in escrow for 1031 exchange	0	698
Mortgage loans receivable	4,904	4,991
Interest rate swap assets	0	812
Financial Liabilities [Abstract]
Secured debt	380,715	453,776
Unsecured debt	455,000	380,000
Unsecured bank credit facilities	143,146	99,401
Interest rate swap liabilities	7,029	3,314
Fair Value [Member]
Financial Assets [Abstract]
Cash and Cash Equivalents, Fair Value Disclosure	342	11
Cash held in escrow for 1031 exchange	0	698
Mortgage loans receivable	4,973	5,055
Interest rate swap assets	0	812
Financial Liabilities [Abstract]
Secured debt	402,425	478,659
Unsecured debt	430,709	364,295
Unsecured bank credit facilities	143,184	99,638
Interest rate swap liabilities	$ 7,029	$ 3,314