MORTGAGE LOANS AND NOTES PAYABLE - Future Payments (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Future principal payment requirements on the outstanding mortgage loans and notes payable at year end
Less: Loan procurement costs, net	$ (2,475)	$ (2,800)
Total mortgage indebtedness	138,716	111,455
Mortgages
Future principal payment requirements on the outstanding mortgage loans and notes payable at year end
2016	23,601
2017	8,576
2018	2,490
2019	11,485
2020	12,615
2021 and thereafter	76,419
Total mortgage payments	135,186	109,993
Plus: Unamortized fair value adjustment	4,375	2,219
Less: Loan procurement costs, net	(845)	(757)
Total mortgage indebtedness	$ 138,716	$ 111,455