INCOME TAXES - Effective Income Tax Rate Reconciliation (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
U.S. Federal Statutory Income Tax	$ 1,601,000	$ (2,717,000)	$ 153,000
State Taxes	1,000	(53,000)	(54,000)
REIT Income not subject to federal income tax	(1,579,000)	2,263,000	(621,000)
Tax affect of U.S. corporate rate change	364,000	0	0
Valuation Allowance	(406,000)	507,000	522,000
Total income tax provision (benefit)	$ (19,000)	$ 0	$ 0
Effective income tax rate (as a percentage)	0.41%	0.00%	0.00%