OPERATING SEGMENTS (Details 1) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other non-segment items of income (expense)
Property Operating Expenses															$ 61
General and administrative													$ (438)	$ (396)	(466)
Net income fee													(250)	(257)	(187)
Advisory fee to related party													(660)	(639)	(704)
Net income	$ (850)	$ 612	$ 1,009	$ 737	$ (282)	$ 727	$ 743	$ 893	$ (338)	$ 680	$ 603	$ 554	1,508	2,081	1,499
Total Segments [Member]
Segment operating income													4,487	4,494	3,663
Other non-segment items of income (expense)
Property Operating Expenses															61
General and administrative													(438)	(396)	(466)
Net income fee													(250)	(257)	(187)
Advisory fee to related party													(660)	(639)	(704)
Other income													(1,631)	(1,121)	(807)
Net income													$ 1,508	$ 2,081	$ 1,499