INCOME TAXES - Components of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred Tax Assets
Basis difference in operating partnerships	$ 2,023	$ 3,998
Unrealized gains (losses)	99	971
Unrealized gains (losses) - derivatives	5,668	5,239
Valuation allowance	(5,668)	(5,239)
Total Deferred Tax Assets	$ 2,122	$ 4,969