OPERATING SEGMENTS (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Operating revenue
Property operating expenses				$ (61)
Interest income		$ 4,237	$ 4,494	4,376
Assets	22,717	22,717	22,717
Land [Member]
Property operating expenses				(26)
Mortgage and loan interest				(652)
Segment operating income (loss)				(678)
Assets	22,717	22,717	22,717	22,717
Other [Member]
Property operating expenses		(1)		(35)
Interest income		4,237	4,494	4,376
Other Income		250
Segment operating income (loss)		4,486	4,494	4,341
Total Segments [Member]
Property operating expenses				(61)
Interest income		4,237	4,494	4,376
Other Income		250
Mortgage and loan interest				(652)
Segment operating income (loss)		4,487	4,494	3,663
Assets	$ 22,717	$ 22,717	$ 22,717	$ 22,717