INTANGIBLE LEASE ASSETS AND LIABILITIES - Amortization (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTANGIBLE LEASE ASSETS AND LIABILITIES
Depreciation and amortization expense	$ 1,353,000	$ 1,089,000
Increase to Income Properties Revenue	(579,659)	(531,546)
Net Amortization of Intangible Assets and Liabilities	$ 773,000	$ 557,000